AI Agent 跨链部署与IBC通信指南 — MSG Chain
适用链：
msg-chain-1· Bech32 前缀：msg
⚠️ No-Go Disclaimer: MSGChain 主网裁决为 No-Go。本文件所有内容反映的是开发阶段的技术设计，不代表主网未独立核验上线状态。生产部署状态请以白皮书为准：https://msgchain.org/whitepaper/
目录
1. 概述
1.1 为什么AI Agent需要跨链能力
AI Agent 在单一区块链上运行受限于该链的流动性、用户群体和计算资源。跨链能力允许 Agent：
- 访问多个链上的流动性池和数据源
- 为不同链上的用户提供服务
- 利用各链的特性（低费用、高速度、隐私等）
- 实现跨链原子操作和套利策略
MSG Chain 通过 IBC（Inter-Blockchain Communication）协议连接 Cosmos 生态中的多条链，为 AI Agent 提供原生的跨链基础设施。
1.2 IBC 基础
IBC 是 Cosmos 生态的核心互操作协议。AI Agent 使用 IBC 进行跨链通信时，涉及以下核心概念：
// IBC 核心概念类型定义
interface IbcConnection {
clientId: string; // 轻客户端 ID，如 "07-tendermint-0"
connectionId: string; // 连接 ID，如 "connection-0"
counterpartyChainId: string; // 对方链 ID
state: 'INIT' | 'TRYOPEN' | 'OPEN';
}
interface IbcChannel {
portId: string; // 端口 ID，如 "a2a"、"transfer"
channelId: string; // 通道 ID，如 "channel-0"
connectionId: string; // 所属连接
ordering: 'UNORDERED' | 'ORDERED';
state: 'INIT' | 'TRYOPEN' | 'OPEN' | 'CLOSED';
}
interface IbcPacket {
sequence: number;
sourcePort: string;
sourceChannel: string;
destinationPort: string;
destinationChannel: string;
data: Uint8Array;
timeoutHeight?: Height;
timeoutTimestamp?: number;
}
1.3 MSG Chain IBC 配置
在 msg-chain-1 上，IBC 的初始化配置如下：
// msg-chain-1 IBC 配置
pub const MSG_CHAIN_IBC_CONFIG: IbcConfig = IbcConfig {
chain_id: "msg-chain-1",
bech32_prefix: "msg",
transfer_port: "transfer",
a2a_port: "a2a",
agent_registry_port: "agent-registry",
ibc_version: "ics-20-v2",
default_timeout_seconds: 600,
};
1.4 跨链身份概述
AI Agent 在跨链环境中需要一个全局唯一的身份标识。DID（Decentralized Identifier）提供了与链无关的身份层，Agent 可以在每条链上拥有一个本地地址，同时通过 DID 文档将这些地址关联到同一个全局身份。
┌─────────────────────────────────────────────────┐
│ 跨链 AI Agent 身份层 │
├─────────────┬─────────────┬─────────────────────┤
│ msg-chain-1 │ chain-a │ chain-b │
│ msg1abc... │ cosmos1... │ osmo1... │
└─────────────┴─────────────┴─────────────────────┘
│ │ │
└──────────────┴──────────────┘
│
DID Document
did:msg:agent:abc123
1.5 适用场景
跨链 AI Agent 的典型应用包括：
| 场景 | 描述 | 涉及链数 |
|---|---|---|
| 跨链套利 | 监控多条链上的 DEX 价差并执行原子交易 | 2+ |
| 跨链预言机 | 聚合多条链上的数据并提供统一喂价 | 3+ |
| 跨链借贷 | 在一条链上抵押资产，在另一条链上借款 | 2 |
| 跨链治理 | Agent 代表用户在多条链上投票 | 3+ |
| 跨链自动化 | 根据一条链上的事件触发另一条链上的操作 | 2 |
2. 跨链Agent身份
2.1 DID 架构设计
AI Agent 在 MSG Chain 上的身份体系采用 W3C DID 标准，扩展了跨链字段以支持多链地址映射。
// ============================================================
// 跨链 DID 核心类型 (TypeScript)
// ============================================================
// 支持的验证方法类型
type VerificationMethodType = 'EcdsaSecp256k1VerificationKey2019' | 'Ed25519VerificationKey2020';
// 验证方法
interface VerificationMethod {
id: string; // did:msg:agent:<id>#keys-1
type: VerificationMethodType;
controller: string; // did:msg:agent:<id>
publicKeyMultibase: string; // 多格式编码的公钥
}
// 跨链地址映射
interface ChainAddress {
chainId: string; // "msg-chain-1"
address: string; // "msg1..."
network: 'mainnet' | 'testnet';
proof?: string; // 签名证明，证明地址所有权
}
// 跨链 DID 主接口
interface CrossChainDID {
id: string; // "did:msg:agent:<unique-id>"
controller: string | string[];
alsoKnownAs: string[]; // 跨链别名列表
// 多链地址映射 chain_id -> address
chainAddresses: Map<string, ChainAddress>;
// 验证方法列表
verificationMethod: VerificationMethod[];
// 认证关系
authentication: string[];
assertionMethod: string[];
keyAgreement: string[];
capabilityInvocation: string[];
capabilityDelegation: string[];
// IBC 相关元数据
ibcEndpoints: IbcEndpoint[];
// 元数据
created: string; // ISO 8601
updated: string; // ISO 8601
version: number;
}
// IBC 端点
interface IbcEndpoint {
chainId: string;
portId: string;
channelId: string;
connectionId: string;
}
2.2 DID 文档生成
Agent 首次部署时，生成 DID 文档并在 MSG Chain 上注册。
// ============================================================
// DID 文档生成器 (TypeScript)
// ============================================================
import { Secp256k1, sha256, randomBytes } from './crypto';
import { bech32 } from 'bech32';
class DidGenerator {
/**
* 为 Agent 生成唯一的 DID
*/
static generateDid(): string {
const entropy = randomBytes(16);
const hash = sha256(entropy);
const id = Buffer.from(hash).toString('hex').substring(0, 32);
return `did:msg:agent:${id}`;
}
/**
* 生成 Agent 跨链密钥对
*/
static generateKeyPair(): { privateKey: Uint8Array; publicKey: Uint8Array } {
return Secp256k1.generateKeyPair();
}
/**
* 从公钥生成 MSG Chain 地址
*/
static generateMsgAddress(publicKey: Uint8Array): string {
const hash = sha256(publicKey);
const twentyBytes = hash.slice(0, 20);
return bech32.encode('msg', bech32.toWords(twentyBytes));
}
/**
* 创建完整的 DID 文档
*/
static createDidDocument(
agentId: string,
keyPair: { privateKey: Uint8Array; publicKey: Uint8Array },
chains: string[]
): CrossChainDID {
const did = `did:msg:agent:${agentId}`;
const pubKeyMultibase = Buffer.from(keyPair.publicKey).toString('base64');
const vm: VerificationMethod = {
id: `${did}#keys-1`,
type: 'EcdsaSecp256k1VerificationKey2019',
controller: did,
publicKeyMultibase: pubKeyMultibase,
};
const chainAddresses = new Map<string, ChainAddress>();
for (const chainId of chains) {
const derivationPath = `m/44'/118'/${chains.indexOf(chainId)}'/0/0`;
const chainPubKey = this.deriveChildKey(keyPair.privateKey, derivationPath);
const address = this.generateMsgAddress(chainPubKey);
chainAddresses.set(chainId, {
chainId,
address,
network: 'mainnet',
proof: this.signAddressClaim(keyPair.privateKey, chainId, address),
});
}
return {
id: did,
controller: did,
alsoKnownAs: [],
chainAddresses,
verificationMethod: [vm],
authentication: [`${did}#keys-1`],
assertionMethod: [`${did}#keys-1`],
keyAgreement: [`${did}#keys-1`],
capabilityInvocation: [`${did}#keys-1`],
capabilityDelegation: [`${did}#keys-1`],
ibcEndpoints: [],
created: new Date().toISOString(),
updated: new Date().toISOString(),
version: 1,
};
}
/**
* 派生子密钥（HD 钱包路径）
*/
private static deriveChildKey(
parentKey: Uint8Array,
path: string
): Uint8Array {
return parentKey;
}
/**
* 签名地址声明，证明地址所有权
*/
private static signAddressClaim(
privateKey: Uint8Array,
chainId: string,
address: string
): string {
const message = `Claim: ${chainId} -> ${address}`;
const signature = Secp256k1.sign(sha256(Buffer.from(message)), privateKey);
return Buffer.from(signature).toString('hex');
}
}
2.3 跨链密钥管理
跨链密钥管理是 Agent 安全的基础。Agent 在每条链上可以使用相同的根密钥派生不同地址，也可以使用独立的密钥对。
// ============================================================
// 跨链密钥管理器 (TypeScript)
// ============================================================
interface KeyDescriptor {
chainId: string;
derivationPath: string;
purpose: 'authentication' | 'payment' | 'governance' | 'encryption';
}
class CrossChainKeyManager {
private rootKey: Uint8Array;
private keysCache: Map<string, { publicKey: Uint8Array; privateKey: Uint8Array }>;
constructor(rootKey: Uint8Array) {
this.rootKey = rootKey;
this.keysCache = new Map();
}
/**
* 为指定链派生密钥
*/
deriveKey(descriptor: KeyDescriptor): { publicKey: Uint8Array; privateKey: Uint8Array } {
const cacheKey = `${descriptor.chainId}:${descriptor.purpose}`;
if (this.keysCache.has(cacheKey)) {
return this.keysCache.get(cacheKey)!;
}
const chainCode = sha256(Buffer.from(descriptor.chainId + descriptor.purpose));
const privateKey = sha256(Buffer.concat([this.rootKey, chainCode]));
const publicKey = Secp256k1.getPublicKey(privateKey);
const keyPair = { publicKey, privateKey };
this.keysCache.set(cacheKey, keyPair);
return keyPair;
}
/**
* 获取 MSG Chain 上的 Agent 地址
*/
getMsgAddress(): string {
const key = this.deriveKey({
chainId: 'msg-chain-1',
derivationPath: "m/44'/118'/0'/0/0",
purpose: 'authentication',
});
return DidGenerator.generateMsgAddress(key.publicKey);
}
/**
* 跨链签名 — 在指定链的上下文中签名消息
*/
signForChain(chainId: string, message: Uint8Array): Uint8Array {
const key = this.deriveKey({
chainId,
derivationPath: "m/44'/118'/0'/0/0",
purpose: 'authentication',
});
return Secp256k1.sign(sha256(message), key.privateKey);
}
/**
* 验证来自跨链 Agent 的签名
*/
verifyCrossChainSignature(
did: CrossChainDID,
chainId: string,
message: Uint8Array,
signature: Uint8Array
): boolean {
const chainAddr = did.chainAddresses.get(chainId);
if (!chainAddr) {
throw new Error(`No address for chain ${chainId}`);
}
const vmId = did.verificationMethod[0]?.id;
if (!vmId) return false;
const pubKey = Buffer.from(did.verificationMethod[0].publicKeyMultibase, 'base64');
return Secp256k1.verify(sha256(message), signature, pubKey);
}
}
2.4 IBC 启用的 DID 注册表
DID 注册表是一个部署在 MSG Chain 上的智能合约，管理 Agent 的 DID 文档并通过 IBC 与其他链同步。
// ============================================================
// 跨链 DID 注册表合约 (Rust - CosmWasm)
// ============================================================
use cosmwasm_std::{
entry_point, Binary, Deps, DepsMut, Env, MessageInfo, Response, StdResult,
IbcMsg, IbcPacket, IbcChannel, IbcEndpoint, IbcOrder, Storage,
};
use serde::{Deserialize, Serialize};
// ---------- 状态定义 ----------
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct DidDocument {
pub id: String,
pub controller: String,
pub also_known_as: Vec<String>,
pub verification_method: Vec<VerificationMethod>,
pub authentication: Vec<String>,
pub assertion_method: Vec<String>,
pub key_agreement: Vec<String>,
pub capability_invocation: Vec<String>,
pub capability_delegation: Vec<String>,
pub chain_addresses: Vec<ChainAddressEntry>,
pub created: String,
pub updated: String,
pub version: u64,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct VerificationMethod {
pub id: String,
#[serde(rename = "type")]
pub vm_type: String,
pub controller: String,
pub public_key_multibase: String,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct ChainAddressEntry {
pub chain_id: String,
pub address: String,
pub network: String,
pub proof: Option<String>,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct IbcSyncState {
pub last_synced_sequence: u64,
pub remote_chain_id: String,
pub remote_registry_address: String,
}
const DID_REGISTRY: &str = "did_registry";
const IBC_SYNC_STATE: &str = "ibc_sync";
const CHAIN_INDEX: &str = "chain_index";
// ---------- 实例化 ----------
#[derive(Serialize, Deserialize)]
pub struct InstantiateMsg {
pub admin: String,
pub supported_chains: Vec<String>,
}
#[entry_point]
pub fn instantiate(
deps: DepsMut,
_env: Env,
info: MessageInfo,
msg: InstantiateMsg,
) -> StdResult<Response> {
let config = RegistryConfig {
admin: info.sender.to_string(),
supported_chains: msg.supported_chains,
};
deps.storage.set(b"config", &bincode2::serialize(&config)?);
Ok(Response::new()
.add_attribute("action", "instantiate")
.add_attribute("admin", info.sender))
}
// ---------- 执行消息 ----------
#[derive(Serialize, Deserialize)]
pub enum ExecuteMsg {
RegisterAgent { did_document: DidDocument },
UpdateAgent { agent_id: String, did_document: DidDocument },
DeactivateAgent { agent_id: String },
SyncDidToChain { target_chain: String, agent_id: String },
AddChainAddress {
agent_id: String,
address_entry: ChainAddressEntry,
proof: Binary,
},
}
#[entry_point]
pub fn execute(
deps: DepsMut,
env: Env,
info: MessageInfo,
msg: ExecuteMsg,
) -> StdResult<Response> {
match msg {
ExecuteMsg::RegisterAgent { did_document } => {
execute_register_agent(deps, env, info, did_document)
}
ExecuteMsg::UpdateAgent { agent_id, did_document } => {
execute_update_agent(deps, env, info, agent_id, did_document)
}
ExecuteMsg::DeactivateAgent { agent_id } => {
execute_deactivate_agent(deps, env, info, agent_id)
}
ExecuteMsg::SyncDidToChain { target_chain, agent_id } => {
execute_sync_did_to_chain(deps, env, info, target_chain, agent_id)
}
ExecuteMsg::AddChainAddress { agent_id, address_entry, proof } => {
execute_add_chain_address(deps, env, info, agent_id, address_entry, proof)
}
}
}
fn execute_register_agent(
deps: DepsMut,
_env: Env,
info: MessageInfo,
doc: DidDocument,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", DID_REGISTRY, doc.id);
if store.get(key.as_bytes()).is_some() {
return Err(cosmwasm_std::StdError::generic_err(
format!("DID {} already registered", doc.id)
));
}
if doc.controller != info.sender.to_string() {
return Err(cosmwasm_std::StdError::generic_err(
"Sender must be the DID controller"
));
}
let serialized = bincode2::serialize(&doc)?;
store.set(key.as_bytes(), &serialized);
for addr in &doc.chain_addresses {
let idx_key = format!("{}{}:{}", CHAIN_INDEX, addr.chain_id, addr.address);
store.set(idx_key.as_bytes(), doc.id.as_bytes());
}
Ok(Response::new()
.add_attribute("action", "register_agent")
.add_attribute("did", doc.id)
.add_attribute("sender", info.sender))
}
fn execute_update_agent(
deps: DepsMut,
env: Env,
info: MessageInfo,
agent_id: String,
new_doc: DidDocument,
) -> StdResult<Response> {
let store = deps.storage;
let did = format!("did:msg:agent:{}", agent_id);
let key = format!("{}{}", DID_REGISTRY, did);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let mut current: DidDocument = bincode2::deserialize(&existing)?;
if current.controller != info.sender.to_string() {
return Err(cosmwasm_std::StdError::generic_err("Unauthorized"));
}
new_doc.version = current.version + 1;
new_doc.created = current.created;
new_doc.updated = env.block.time.to_string();
let serialized = bincode2::serialize(&new_doc)?;
store.set(key.as_bytes(), &serialized);
Ok(Response::new()
.add_attribute("action", "update_agent")
.add_attribute("did", did)
.add_attribute("version", new_doc.version.to_string()))
}
fn execute_deactivate_agent(
deps: DepsMut,
_env: Env,
info: MessageInfo,
agent_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let did = format!("did:msg:agent:{}", agent_id);
let key = format!("{}{}", DID_REGISTRY, did);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let doc: DidDocument = bincode2::deserialize(&existing)?;
if doc.controller != info.sender.to_string() {
return Err(cosmwasm_std::StdError::generic_err("Unauthorized"));
}
store.remove(key.as_bytes());
Ok(Response::new()
.add_attribute("action", "deactivate_agent")
.add_attribute("did", did))
}
fn execute_sync_did_to_chain(
deps: DepsMut,
env: Env,
_info: MessageInfo,
target_chain: String,
agent_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let did = format!("did:msg:agent:{}", agent_id);
let key = format!("{}{}", DID_REGISTRY, did);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let doc: DidDocument = bincode2::deserialize(&existing)?;
let packet_data = IbcDidSyncPacket {
did_document: doc,
source_chain: "msg-chain-1".to_string(),
timestamp: env.block.time,
};
let serialized_packet = bincode2::serialize(&packet_data)?;
let ibc_msg = IbcMsg::SendPacket {
channel_id: format!("channel-{}", get_channel_for_chain(&target_chain)),
data: Binary::from(serialized_packet),
timeout: IbcTimeout::with_timestamp(env.block.time.plus_seconds(600)),
};
Ok(Response::new()
.add_message(ibc_msg)
.add_attribute("action", "sync_did")
.add_attribute("agent_id", agent_id)
.add_attribute("target_chain", target_chain))
}
fn execute_add_chain_address(
deps: DepsMut,
_env: Env,
info: MessageInfo,
agent_id: String,
address_entry: ChainAddressEntry,
_proof: Binary,
) -> StdResult<Response> {
let store = deps.storage;
let did = format!("did:msg:agent:{}", agent_id);
let key = format!("{}{}", DID_REGISTRY, did);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let mut doc: DidDocument = bincode2::deserialize(&existing)?;
if doc.controller != info.sender.to_string() {
return Err(cosmwasm_std::StdError::generic_err("Unauthorized"));
}
if address_entry.proof.is_none() {
return Err(cosmwasm_std::StdError::generic_err("Proof required"));
}
doc.chain_addresses.push(address_entry.clone());
doc.version += 1;
let idx_key = format!("{}{}:{}", CHAIN_INDEX, address_entry.chain_id, address_entry.address);
store.set(idx_key.as_bytes(), did.as_bytes());
let serialized = bincode2::serialize(&doc)?;
store.set(key.as_bytes(), &serialized);
Ok(Response::new()
.add_attribute("action", "add_chain_address")
.add_attribute("agent_id", agent_id)
.add_attribute("chain", &address_entry.chain_id)
.add_attribute("address", &address_entry.address))
}
// ---------- 查询消息 ----------
#[derive(Serialize, Deserialize)]
pub enum QueryMsg {
GetAgent { did: String },
GetAgentByAddress { chain_id: String, address: String },
GetChainAddresses { agent_id: String },
ListAgents { start_after: Option<String>, limit: Option<u32> },
}
#[entry_point]
pub fn query(deps: Deps, _env: Env, msg: QueryMsg) -> StdResult<Binary> {
match msg {
QueryMsg::GetAgent { did } => query_get_agent(deps, did),
QueryMsg::GetAgentByAddress { chain_id, address } => {
query_get_agent_by_address(deps, chain_id, address)
}
QueryMsg::GetChainAddresses { agent_id } => {
query_get_chain_addresses(deps, agent_id)
}
QueryMsg::ListAgents { start_after, limit } => {
query_list_agents(deps, start_after, limit)
}
}
}
fn query_get_agent(deps: Deps, did: String) -> StdResult<Binary> {
let key = format!("{}{}", DID_REGISTRY, did);
let data = deps.storage.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let doc: DidDocument = bincode2::deserialize(&data)?;
Ok(Binary::from(bincode2::serialize(&doc)?))
}
fn query_get_agent_by_address(
deps: Deps,
chain_id: String,
address: String,
) -> StdResult<Binary> {
let idx_key = format!("{}{}:{}", CHAIN_INDEX, chain_id, address);
let did = deps.storage.get(idx_key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("No agent found for address"))?;
let did_str = String::from_utf8(did).unwrap();
query_get_agent(deps, did_str)
}
fn query_get_chain_addresses(deps: Deps, agent_id: String) -> StdResult<Binary> {
let did = format!("did:msg:agent:{}", agent_id);
let key = format!("{}{}", DID_REGISTRY, did);
let data = deps.storage.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let doc: DidDocument = bincode2::deserialize(&data)?;
Ok(Binary::from(bincode2::serialize(&doc.chain_addresses)?))
}
fn query_list_agents(
deps: Deps,
start_after: Option<String>,
limit: Option<u32>,
) -> StdResult<Binary> {
let limit = limit.unwrap_or(30).min(100);
let agents: Vec<DidDocument> = deps.storage
.range(None, None, cosmwasm_std::Order::Ascending)
.filter(|(k, _)| k.starts_with(DID_REGISTRY.as_bytes()))
.skip(start_after.map(|_| 0).unwrap_or(0))
.take(limit as usize)
.map(|(_, v)| bincode2::deserialize::<DidDocument>(&v).unwrap())
.collect();
Ok(Binary::from(bincode2::serialize(&agents)?))
}
// ---------- IBC 数据包定义 ----------
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct IbcDidSyncPacket {
pub did_document: DidDocument,
pub source_chain: String,
pub timestamp: cosmwasm_std::Timestamp,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct IbcDidSyncAcknowledgement {
pub status: SyncStatus,
pub did: String,
pub target_chain: String,
pub error_msg: Option<String>,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum SyncStatus {
Success,
Failure,
Pending,
}
// ---------- IBC 入口点 ----------
#[entry_point]
pub fn ibc_packet_receive(
deps: DepsMut,
env: Env,
msg: IbcPacket,
) -> StdResult<IbcReceiveResponse> {
let packet: IbcDidSyncPacket = bincode2::deserialize(&msg.data)?;
let agent_id = packet.did_document.id.clone();
let key = format!("{}{}", DID_REGISTRY, agent_id);
if let Some(existing_data) = deps.storage.get(key.as_bytes()) {
let local_doc: DidDocument = bincode2::deserialize(&existing_data)?;
if packet.did_document.version > local_doc.version {
deps.storage.set(key.as_bytes(), &msg.data);
}
} else {
deps.storage.set(key.as_bytes(), &msg.data);
}
let ack = IbcDidSyncAcknowledgement {
status: SyncStatus::Success,
did: agent_id,
target_chain: "msg-chain-1".to_string(),
error_msg: None,
};
Ok(IbcReceiveResponse::new()
.set_ack(bincode2::serialize(&ack)?)
.add_attribute("action", "ibc_did_sync")
.add_attribute("did", packet.did_document.id))
}
#[entry_point]
pub fn ibc_packet_ack(
deps: DepsMut,
_env: Env,
ack: IbcPacketAckMsg,
) -> StdResult<Response> {
let ack_data: IbcDidSyncAcknowledgement = bincode2::deserialize(&ack.acknowledgement.data)?;
Ok(Response::new()
.add_attribute("action", "ibc_did_sync_ack")
.add_attribute("did", ack_data.did)
.add_attribute("status", format!("{:?}", ack_data.status)))
}
#[entry_point]
pub fn ibc_packet_timeout(
deps: DepsMut,
_env: Env,
_msg: IbcPacketTimeoutMsg,
) -> StdResult<Response> {
Ok(Response::new()
.add_attribute("action", "ibc_did_sync_timeout"))
}
// ---------- 辅助函数 ----------
fn get_channel_for_chain(chain_id: &str) -> String {
match chain_id {
"chain-a" => "0".to_string(),
"chain-b" => "1".to_string(),
"chain-c" => "2".to_string(),
_ => panic!("unknown chain"),
}
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct RegistryConfig {
pub admin: String,
pub supported_chains: Vec<String>,
}
// ---------- IBC 通道握手 ----------
#[entry_point]
pub fn ibc_channel_open(
deps: DepsMut,
_env: Env,
msg: IbcChannelOpenMsg,
) -> StdResult<()> {
let channel = msg.channel();
if channel.endpoint.port_id != "did-registry" {
return Err(cosmwasm_std::StdError::generic_err(
format!("Expected port 'did-registry', got '{}'", channel.endpoint.port_id)
));
}
if channel.order != IbcOrder::Ordered {
return Err(cosmwasm_std::StdError::generic_err("Must use ordered channels"));
}
Ok(())
}
#[entry_point]
pub fn ibc_channel_connect(
deps: DepsMut,
_env: Env,
msg: IbcChannelConnectMsg,
) -> StdResult<Response> {
let channel = msg.channel();
let state = IbcSyncState {
last_synced_sequence: 0,
remote_chain_id: channel.counterparty_endpoint.port_id.clone(),
remote_registry_address: String::new(),
};
let key = format!("{}{}", IBC_SYNC_STATE, channel.channel_id);
deps.storage.set(key.as_bytes(), &bincode2::serialize(&state)?);
Ok(Response::new()
.add_attribute("action", "channel_connect")
.add_attribute("channel", &channel.channel_id))
}
#[entry_point]
pub fn ibc_channel_close(
deps: DepsMut,
_env: Env,
msg: IbcChannelCloseMsg,
) -> StdResult<Response> {
let channel = msg.channel();
let key = format!("{}{}", IBC_SYNC_STATE, channel.channel_id);
deps.storage.remove(key.as_bytes());
Ok(Response::new()
.add_attribute("action", "channel_close")
.add_attribute("channel", &channel.channel_id))
}
2.5 DID 解析流程
DID 解析是将 did:msg:agent:<id> 解析为完整的 DID 文档的过程。跨链场景下，解析器需要从多条链上收集信息。
// ============================================================
// 跨链 DID 解析器 (TypeScript)
// ============================================================
class CrossChainDidResolver {
private rpcEndpoints: Map<string, string>;
private registryAddresses: Map<string, string>;
constructor() {
this.rpcEndpoints = new Map();
this.registryAddresses = new Map();
this.rpcEndpoints.set('msg-chain-1', 'https://rpc.msg-chain-1.example.com');
this.rpcEndpoints.set('chain-a', 'https://rpc.chain-a.example.com');
}
async resolve(did: string): Promise<CrossChainDID | null> {
const baseDoc = await this.resolveFromChain('msg-chain-1', did);
if (!baseDoc) return null;
const allChains = baseDoc.chainAddresses.keys();
for (const chainId of allChains) {
if (chainId === 'msg-chain-1') continue;
try {
const remoteDoc = await this.resolveFromChain(chainId, did);
if (remoteDoc) {
this.mergeDocuments(baseDoc, remoteDoc);
}
} catch (e) {
console.warn(`Failed to resolve DID on ${chainId}:`, e);
}
}
return baseDoc;
}
private async resolveFromChain(
chainId: string,
did: string
): Promise<CrossChainDID | null> {
const rpc = this.rpcEndpoints.get(chainId);
if (!rpc) throw new Error(`No RPC for chain ${chainId}`);
const registryAddr = this.registryAddresses.get(chainId);
const queryMsg = { get_agent: { did } };
const response = await fetch(rpc, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
jsonrpc: '2.0',
id: 1,
method: 'abci_query',
params: {
path: `/cosmwasm/wasm/v1/contract/${registryAddr}/smart`,
data: Buffer.from(JSON.stringify(queryMsg)).toString('base64'),
},
}),
});
const result = await response.json();
if (result.error) return null;
return this.parseDidDocument(result.result.response);
}
private mergeDocuments(base: CrossChainDID, remote: CrossChainDID): void {
for (const [chainId, addr] of remote.chainAddresses) {
if (!base.chainAddresses.has(chainId)) {
base.chainAddresses.set(chainId, addr);
}
}
for (const vm of remote.verificationMethod) {
if (!base.verificationMethod.find(v => v.id === vm.id)) {
base.verificationMethod.push(vm);
}
}
if (remote.updated > base.updated) {
base.updated = remote.updated;
}
}
private parseDidDocument(raw: any): CrossChainDID {
const bytes = Buffer.from(raw, 'base64');
return JSON.parse(bytes.toString());
}
}
2.6 Agent 部署脚本
Agent 部署时，自动化脚本创建设立跨链身份所需的全部资源。
#!/bin/bash
# ============================================================
# 跨链 Agent 部署脚本
# ============================================================
set -euo pipefail
MSG_RPC="https://rpc.msg-chain-1.example.com"
MSG_REGISTRY="msg1registryaddress..."
AGENT_KEY_NAME="agent-$1"
echo "=== 跨链 Agent 部署 ==="
# 1. 生成 Agent 身份
echo "[1/4] 生成 DID..."
agent_id=$(openssl rand -hex 16)
did="did:msg:agent:$agent_id"
echo " DID: $did"
# 2. 生成密钥对
echo "[2/4] 生成密钥..."
msgd keys add $AGENT_KEY_NAME --keyring-backend file
agent_addr=$(msgd keys show $AGENT_KEY_NAME -a --keyring-backend file)
echo " Address: $agent_addr"
# 3. 在 MSG Chain 上注册
echo "[3/4] 注册到 MSG Chain..."
register_msg=$(cat <<EOF
{
"register_agent": {
"did_document": {
"id": "$did",
"controller": "$agent_addr",
"chain_addresses": [
{
"chain_id": "msg-chain-1",
"address": "$agent_addr",
"network": "mainnet"
}
],
"verification_method": [],
"version": 1
}
}
}
EOF
)
msgd tx wasm execute $MSG_REGISTRY "$register_msg" \
--from $AGENT_KEY_NAME \
--node $MSG_RPC \
--gas auto \
--gas-prices 1000000000attoMSG \
-y
# 4. 建立 IBC 通道并同步到其他链
echo "[4/4] 跨链同步..."
for target_chain in "chain-a" "chain-b"; do
sync_msg=$(cat <<EOF
{
"sync_did_to_chain": {
"target_chain": "$target_chain",
"agent_id": "$agent_id"
}
}
EOF
)
msgd tx wasm execute $MSG_REGISTRY "$sync_msg" \
--from $AGENT_KEY_NAME \
--node $MSG_RPC \
--gas auto \
--gas-prices 1000000000attoMSG \
-y
done
echo "=== 部署完成 ==="
echo "DID: $did"
echo "MSG Address: $agent_addr"
3. 跨链Agent注册与发现
3.1 IBC 数据包设计
Agent 注册与发现需要跨链同步 Agent 元数据。
// ============================================================
// IBC Agent 注册数据包 (Rust)
// ============================================================
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum AgentCapability {
TradeExecution,
DataQuery,
MessageRelay,
Automation,
Custom(String),
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum AgentStatus {
Active,
Paused,
Retired,
Slashed,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct IbcAgentRegistration {
pub agent_id: String,
pub source_chain: String,
pub target_chain: String,
pub capabilities: Vec<AgentCapability>,
pub did_document: Vec<u8>,
pub metadata: HashMap<String, String>,
pub timestamp: u64,
pub signature: Vec<u8>,
pub version: u32,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct IbcAgentHeartbeat {
pub agent_id: String,
pub source_chain: String,
pub status: AgentStatus,
pub last_block_height: u64,
pub performance_metrics: HashMap<String, String>,
pub timestamp: u64,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct IbcAgentDiscoveryQuery {
pub query_id: String,
pub query_type: DiscoveryQueryType,
pub source_chain: String,
pub filters: HashMap<String, String>,
pub max_results: u32,
pub requester_did: String,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum DiscoveryQueryType {
ByCapability,
ByChain,
ByAddress,
All,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct IbcAgentDiscoveryResponse {
pub query_id: String,
pub source_chain: String,
pub agents: Vec<DiscoveredAgent>,
pub total_count: u32,
pub has_more: bool,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct DiscoveredAgent {
pub agent_id: String,
pub did: String,
pub chain_addresses: Vec<ChainAddressEntry>,
pub capabilities: Vec<AgentCapability>,
pub status: AgentStatus,
pub last_seen: u64,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct IbcRegistrationAcknowledgement {
pub status: RegistrationStatus,
pub agent_id: String,
pub registered_chain: String,
pub local_agent_id: String,
pub error_msg: Option<String>,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum RegistrationStatus {
Accepted,
Rejected,
Pending,
}
3.2 Agent 注册表合约实现
// ============================================================
// 跨链 Agent 注册表合约 (Rust - CosmWasm)
// ============================================================
use cosmwasm_std::{
entry_point, to_binary, Binary, Deps, DepsMut, Env, MessageInfo, Response, StdResult,
IbcMsg, IbcPacket, IbcReceiveResponse, IbcPacketAckMsg, IbcPacketTimeoutMsg,
IbcChannelOpenMsg, IbcChannelConnectMsg, IbcChannelCloseMsg, IbcOrder, IbcTimeout,
Timestamp, Storage,
};
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct AgentRegistration {
pub agent_id: String,
pub did: String,
pub owner: String,
pub capabilities: Vec<AgentCapability>,
pub status: AgentStatus,
pub chain: String,
pub address: String,
pub registered_at: u64,
pub last_heartbeat: u64,
pub metadata: HashMap<String, String>,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct CrossChainChannel {
pub channel_id: String,
pub remote_chain_id: String,
pub remote_port: String,
pub last_sequence: u64,
pub is_active: bool,
}
const AGENTS: &str = "agents";
const CHANNELS: &str = "channels";
const CAPABILITY_INDEX: &str = "cap_idx";
const TOTAL_AGENTS: &str = "total_agents";
#[derive(Serialize, Deserialize)]
pub struct InstantiateMsg {
pub admin: String,
pub chain_id: String,
}
#[entry_point]
pub fn instantiate(
deps: DepsMut,
_env: Env,
info: MessageInfo,
msg: InstantiateMsg,
) -> StdResult<Response> {
let config = RegistryConfig {
admin: info.sender.to_string(),
chain_id: msg.chain_id,
total_agents: 0,
active_channels: 0,
};
deps.storage.set(b"config", &bincode2::serialize(&config)?);
Ok(Response::new()
.add_attribute("action", "instantiate")
.add_attribute("chain_id", &msg.chain_id))
}
#[derive(Serialize, Deserialize)]
pub enum ExecuteMsg {
Register(IbcAgentRegistration),
Update {
agent_id: String,
capabilities: Option<Vec<AgentCapability>>,
metadata: Option<HashMap<String, String>>,
},
Heartbeat(IbcAgentHeartbeat),
Deregister { agent_id: String },
CrossChainQuery {
target_chain: String,
query: IbcAgentDiscoveryQuery,
},
SyncToAllChannels { agent_id: String },
PauseAgent { agent_id: String },
ResumeAgent { agent_id: String },
}
#[entry_point]
pub fn execute(
deps: DepsMut,
env: Env,
info: MessageInfo,
msg: ExecuteMsg,
) -> StdResult<Response> {
match msg {
ExecuteMsg::Register(reg) => execute_register(deps, env, info, reg),
ExecuteMsg::Update { agent_id, capabilities, metadata } => {
execute_update(deps, env, info, agent_id, capabilities, metadata)
}
ExecuteMsg::Heartbeat(hb) => execute_heartbeat(deps, env, info, hb),
ExecuteMsg::Deregister { agent_id } => execute_deregister(deps, env, info, agent_id),
ExecuteMsg::CrossChainQuery { target_chain, query } => {
execute_cross_chain_query(deps, env, info, target_chain, query)
}
ExecuteMsg::SyncToAllChannels { agent_id } => {
execute_sync_to_all(deps, env, info, agent_id)
}
ExecuteMsg::PauseAgent { agent_id } => execute_pause(deps, env, info, agent_id),
ExecuteMsg::ResumeAgent { agent_id } => execute_resume(deps, env, info, agent_id),
}
}
fn execute_register(
deps: DepsMut,
env: Env,
info: MessageInfo,
reg: IbcAgentRegistration,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", AGENTS, reg.agent_id);
if store.get(key.as_bytes()).is_some() {
return Err(cosmwasm_std::StdError::generic_err(
format!("Agent {} already registered", reg.agent_id)
));
}
let registration = AgentRegistration {
agent_id: reg.agent_id.clone(),
did: String::from_utf8(reg.did_document.clone()).unwrap_or_default(),
owner: info.sender.to_string(),
capabilities: reg.capabilities.clone(),
status: AgentStatus::Active,
chain: reg.source_chain.clone(),
address: info.sender.to_string(),
registered_at: env.block.time.seconds(),
last_heartbeat: env.block.time.seconds(),
metadata: reg.metadata.clone(),
};
store.set(key.as_bytes(), &bincode2::serialize(®istration)?);
for cap in ®.capabilities {
let cap_key = format!("{}{}:{}", CAPABILITY_INDEX, cap_to_str(cap), reg.agent_id);
store.set(cap_key.as_bytes(), b"1");
}
let total_key = TOTAL_AGENTS;
let total = store.get(total_key.as_bytes())
.map(|d| u64::from_be_bytes(d.try_into().unwrap()))
.unwrap_or(0) + 1;
store.set(total_key.as_bytes(), &total.to_be_bytes());
let broadcast = broadcast_registration_to_channels(store, ®, env)?;
Ok(Response::new()
.add_messages(broadcast)
.add_attribute("action", "register")
.add_attribute("agent_id", ®.agent_id)
.add_attribute("capabilities", format!("{:?}", reg.capabilities)))
}
fn broadcast_registration_to_channels(
store: &mut dyn Storage,
reg: &IbcAgentRegistration,
env: Env,
) -> StdResult<Vec<IbcMsg>> {
let mut msgs = Vec::new();
let channels = get_all_channels(store);
for channel in &channels {
if !channel.is_active { continue; }
let packet_data = bincode2::serialize(reg)?;
let ibc_msg = IbcMsg::SendPacket {
channel_id: channel.channel_id.clone(),
data: Binary::from(packet_data),
timeout: IbcTimeout::with_timestamp(env.block.time.plus_seconds(600)),
};
msgs.push(ibc_msg);
}
Ok(msgs)
}
fn get_all_channels(store: &dyn Storage) -> Vec<CrossChainChannel> {
let mut channels = Vec::new();
let prefix = CHANNELS.as_bytes();
for (key, value) in store.range(Some(prefix.to_vec()), None, cosmwasm_std::Order::Ascending) {
if let Ok(ch) = bincode2::deserialize::<CrossChainChannel>(&value) {
channels.push(ch);
}
}
channels
}
fn execute_update(
deps: DepsMut,
env: Env,
info: MessageInfo,
agent_id: String,
capabilities: Option<Vec<AgentCapability>>,
metadata: Option<HashMap<String, String>>,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", AGENTS, agent_id);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let mut agent: AgentRegistration = bincode2::deserialize(&existing)?;
if agent.owner != info.sender.to_string() {
return Err(cosmwasm_std::StdError::generic_err("Unauthorized"));
}
if let Some(caps) = capabilities {
for old_cap in &agent.capabilities {
let cap_key = format!("{}{}:{}", CAPABILITY_INDEX, cap_to_str(old_cap), agent_id);
store.remove(cap_key.as_bytes());
}
for new_cap in &caps {
let cap_key = format!("{}{}:{}", CAPABILITY_INDEX, cap_to_str(new_cap), agent_id);
store.set(cap_key.as_bytes(), b"1");
}
agent.capabilities = caps;
}
if let Some(meta) = metadata {
agent.metadata = meta;
}
agent.registered_at = env.block.time.seconds();
store.set(key.as_bytes(), &bincode2::serialize(&agent)?);
Ok(Response::new()
.add_attribute("action", "update")
.add_attribute("agent_id", &agent_id))
}
fn execute_heartbeat(
deps: DepsMut,
env: Env,
_info: MessageInfo,
hb: IbcAgentHeartbeat,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", AGENTS, hb.agent_id);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let mut agent: AgentRegistration = bincode2::deserialize(&existing)?;
agent.last_heartbeat = env.block.time.seconds();
agent.status = hb.status;
store.set(key.as_bytes(), &bincode2::serialize(&agent)?);
Ok(Response::new()
.add_attribute("action", "heartbeat")
.add_attribute("agent_id", &hb.agent_id)
.add_attribute("status", format!("{:?}", hb.status)))
}
fn execute_deregister(
deps: DepsMut,
_env: Env,
info: MessageInfo,
agent_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", AGENTS, agent_id);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let agent: AgentRegistration = bincode2::deserialize(&existing)?;
if agent.owner != info.sender.to_string() {
return Err(cosmwasm_std::StdError::generic_err("Unauthorized"));
}
for cap in &agent.capabilities {
let cap_key = format!("{}{}:{}", CAPABILITY_INDEX, cap_to_str(cap), agent_id);
store.remove(cap_key.as_bytes());
}
store.remove(key.as_bytes());
let total_key = TOTAL_AGENTS;
let total = store.get(total_key.as_bytes())
.map(|d| u64::from_be_bytes(d.try_into().unwrap()))
.unwrap_or(1) - 1;
store.set(total_key.as_bytes(), &total.to_be_bytes());
Ok(Response::new()
.add_attribute("action", "deregister")
.add_attribute("agent_id", &agent_id))
}
fn execute_cross_chain_query(
deps: DepsMut,
env: Env,
_info: MessageInfo,
target_chain: String,
query: IbcAgentDiscoveryQuery,
) -> StdResult<Response> {
let channel_id = find_channel_for_chain(deps.storage, &target_chain)
.ok_or_else(|| cosmwasm_std::StdError::generic_err(
format!("No channel for chain {}", target_chain)
))?;
let packet_data = bincode2::serialize(&query)?;
let ibc_msg = IbcMsg::SendPacket {
channel_id,
data: Binary::from(packet_data),
timeout: IbcTimeout::with_timestamp(env.block.time.plus_seconds(300)),
};
Ok(Response::new()
.add_message(ibc_msg)
.add_attribute("action", "cross_chain_query")
.add_attribute("target", &target_chain))
}
fn find_channel_for_chain(store: &dyn Storage, chain_id: &str) -> Option<String> {
let channels = get_all_channels(store);
channels.iter()
.find(|c| c.remote_chain_id == chain_id)
.map(|c| c.channel_id.clone())
}
fn cap_to_str(cap: &AgentCapability) -> String {
match cap {
AgentCapability::TradeExecution => "trade_execution".to_string(),
AgentCapability::DataQuery => "data_query".to_string(),
AgentCapability::MessageRelay => "message_relay".to_string(),
AgentCapability::Automation => "automation".to_string(),
AgentCapability::Custom(s) => format!("custom:{}", s),
}
}
fn execute_sync_to_all(
deps: DepsMut,
env: Env,
_info: MessageInfo,
agent_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", AGENTS, agent_id);
let data = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let registration: AgentRegistration = bincode2::deserialize(&data)?;
let channels = get_all_channels(store);
let mut msgs = Vec::new();
for channel in channels.iter().filter(|c| c.is_active) {
let msg = IbcMsg::SendPacket {
channel_id: channel.channel_id.clone(),
data: Binary::from(data.clone()),
timeout: IbcTimeout::with_timestamp(env.block.time.plus_seconds(600)),
};
msgs.push(msg);
}
Ok(Response::new()
.add_messages(msgs)
.add_attribute("action", "sync_to_all")
.add_attribute("agent_id", &agent_id))
}
fn execute_pause(
deps: DepsMut,
_env: Env,
info: MessageInfo,
agent_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", AGENTS, agent_id);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let mut agent: AgentRegistration = bincode2::deserialize(&existing)?;
if agent.owner != info.sender.to_string() {
return Err(cosmwasm_std::StdError::generic_err("Unauthorized"));
}
agent.status = AgentStatus::Paused;
store.set(key.as_bytes(), &bincode2::serialize(&agent)?);
Ok(Response::new()
.add_attribute("action", "pause")
.add_attribute("agent_id", &agent_id))
}
fn execute_resume(
deps: DepsMut,
_env: Env,
info: MessageInfo,
agent_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", AGENTS, agent_id);
let existing = store.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let mut agent: AgentRegistration = bincode2::deserialize(&existing)?;
if agent.owner != info.sender.to_string() {
return Err(cosmwasm_std::StdError::generic_err("Unauthorized"));
}
agent.status = AgentStatus::Active;
store.set(key.as_bytes(), &bincode2::serialize(&agent)?);
Ok(Response::new()
.add_attribute("action", "resume")
.add_attribute("agent_id", &agent_id))
}
// ---------- 查询 ----------
#[derive(Serialize, Deserialize)]
pub enum QueryMsg {
GetAgent { agent_id: String },
GetAgentsByCapability { capability: AgentCapability, limit: Option<u32> },
ListAgents { start_after: Option<String>, limit: Option<u32> },
QueryCrossChainAgents { chain_id: String, capability: Option<AgentCapability> },
GetStats {},
GetChannels {},
}
#[entry_point]
pub fn query(deps: Deps, _env: Env, msg: QueryMsg) -> StdResult<Binary> {
match msg {
QueryMsg::GetAgent { agent_id } => query_get_agent(deps, agent_id),
QueryMsg::GetAgentsByCapability { capability, limit } => {
query_by_capability(deps, capability, limit)
}
QueryMsg::ListAgents { start_after, limit } => {
query_list_agents(deps, start_after, limit)
}
QueryMsg::QueryCrossChainAgents { chain_id, capability } => {
query_cross_chain_agents(deps, chain_id, capability)
}
QueryMsg::GetStats {} => query_get_stats(deps),
QueryMsg::GetChannels {} => query_get_channels(deps),
}
}
fn query_get_agent(deps: Deps, agent_id: String) -> StdResult<Binary> {
let key = format!("{}{}", AGENTS, agent_id);
let data = deps.storage.get(key.as_bytes())
.ok_or_else(|| cosmwasm_std::StdError::generic_err("Agent not found"))?;
let agent: AgentRegistration = bincode2::deserialize(&data)?;
to_binary(&agent)
}
fn query_by_capability(
deps: Deps,
capability: AgentCapability,
limit: Option<u32>,
) -> StdResult<Binary> {
let limit = limit.unwrap_or(20).min(100);
let cap_str = cap_to_str(&capability);
let prefix = format!("{}{}:", CAPABILITY_INDEX, cap_str);
let mut agents = Vec::new();
for (key, _) in deps.storage.range(
Some(prefix.as_bytes().to_vec()),
None,
cosmwasm_std::Order::Ascending,
) {
if agents.len() >= limit as usize { break; }
let key_str = String::from_utf8(key).unwrap();
let agent_id = key_str.split(':').last().unwrap_or("");
let agent_key = format!("{}{}", AGENTS, agent_id);
if let Some(data) = deps.storage.get(agent_key.as_bytes()) {
if let Ok(agent) = bincode2::deserialize::<AgentRegistration>(&data) {
agents.push(agent);
}
}
}
to_binary(&agents)
}
fn query_list_agents(
deps: Deps,
start_after: Option<String>,
limit: Option<u32>,
) -> StdResult<Binary> {
let limit = limit.unwrap_or(30).min(100);
let prefix = AGENTS.as_bytes();
let mut agents = Vec::new();
let start = start_after.map(|s| format!("{}{}", AGENTS, s).into_bytes());
for (_, value) in deps.storage.range(start, None, cosmwasm_std::Order::Ascending) {
if agents.len() >= limit as usize { break; }
if let Ok(agent) = bincode2::deserialize::<AgentRegistration>(&value) {
agents.push(agent);
}
}
to_binary(&agents)
}
fn query_cross_chain_agents(
deps: Deps,
chain_id: String,
capability: Option<AgentCapability>,
) -> StdResult<Binary> {
let mut agents: Vec<AgentRegistration> = Vec::new();
let prefix = AGENTS.as_bytes();
for (_, value) in deps.storage.range(Some(prefix.to_vec()), None, cosmwasm_std::Order::Ascending) {
if let Ok(agent) = bincode2::deserialize::<AgentRegistration>(&value) {
if agent.chain != chain_id { continue; }
if let Some(ref cap) = capability {
if !agent.capabilities.contains(cap) { continue; }
}
agents.push(agent);
}
}
to_binary(&agents)
}
fn query_get_stats(deps: Deps) -> StdResult<Binary> {
let total_key = TOTAL_AGENTS;
let total = deps.storage.get(total_key.as_bytes())
.map(|d| u64::from_be_bytes(d.try_into().unwrap()))
.unwrap_or(0);
let channels = get_all_channels(deps.storage);
let active_channels = channels.iter().filter(|c| c.is_active).count();
to_binary(&serde_json::json!({
"total_agents": total,
"active_channels": active_channels,
"total_channels": channels.len(),
}))
}
fn query_get_channels(deps: Deps) -> StdResult<Binary> {
let channels = get_all_channels(deps.storage);
to_binary(&channels)
}
// ---------- IBC 入口点 ----------
#[entry_point]
pub fn ibc_packet_receive(
deps: DepsMut,
env: Env,
msg: IbcPacket,
) -> StdResult<IbcReceiveResponse> {
let store = deps.storage;
let source_channel = msg.dest.channel_id.clone();
if let Ok(reg) = bincode2::deserialize::<IbcAgentRegistration>(&msg.data) {
return handle_remote_registration(store, env, reg, &source_channel);
}
if let Ok(query) = bincode2::deserialize::<IbcAgentDiscoveryQuery>(&msg.data) {
return handle_discovery_query(store, env, query, &source_channel);
}
if let Ok(hb) = bincode2::deserialize::<IbcAgentHeartbeat>(&msg.data) {
return handle_remote_heartbeat(store, env, hb);
}
Err(cosmwasm_std::StdError::generic_err("Unknown packet type"))
}
fn handle_remote_registration(
store: &mut dyn Storage,
env: Env,
reg: IbcAgentRegistration,
source_channel: &str,
) -> StdResult<IbcReceiveResponse> {
let agent_id = format!("remote:{}:{}", reg.source_chain, reg.agent_id);
let key = format!("{}{}", AGENTS, agent_id);
let is_update = store.get(key.as_bytes()).is_some();
let registration = AgentRegistration {
agent_id: agent_id.clone(),
did: String::from_utf8(reg.did_document.clone()).unwrap_or_default(),
owner: format!("ibc:{}:{}", source_channel, reg.agent_id),
capabilities: reg.capabilities.clone(),
status: AgentStatus::Active,
chain: reg.source_chain.clone(),
address: format!("ibc://{}/{}", reg.source_chain, reg.agent_id),
registered_at: if is_update {
bincode2::deserialize::<AgentRegistration>(&store.get(key.as_bytes()).unwrap())
.map(|a| a.registered_at)
.unwrap_or(env.block.time.seconds())
} else {
env.block.time.seconds()
},
last_heartbeat: env.block.time.seconds(),
metadata: reg.metadata.clone(),
};
store.set(key.as_bytes(), &bincode2::serialize(®istration)?);
for cap in ®.capabilities {
let cap_key = format!("{}{}:{}", CAPABILITY_INDEX, cap_to_str(cap), agent_id);
store.set(cap_key.as_bytes(), b"1");
}
let ack = IbcRegistrationAcknowledgement {
status: RegistrationStatus::Accepted,
agent_id: reg.agent_id,
registered_chain: "msg-chain-1".to_string(),
local_agent_id: agent_id,
error_msg: None,
};
Ok(IbcReceiveResponse::new()
.set_ack(bincode2::serialize(&ack)?)
.add_attribute("action", "remote_register")
.add_attribute("agent_id", &agent_id)
.add_attribute("is_update", is_update.to_string()))
}
fn handle_discovery_query(
store: &dyn Storage,
_env: Env,
query: IbcAgentDiscoveryQuery,
_source_channel: &str,
) -> StdResult<IbcReceiveResponse> {
let mut agents = Vec::new();
let prefix = AGENTS.as_bytes();
for (_, value) in store.range(Some(prefix.to_vec()), None, cosmwasm_std::Order::Ascending) {
if agents.len() >= query.max_results as usize { break; }
if let Ok(reg) = bincode2::deserialize::<AgentRegistration>(&value) {
if reg.status != AgentStatus::Active { continue; }
let matched = match &query.query_type {
DiscoveryQueryType::All => true,
DiscoveryQueryType::ByCapability => {
if let Some(filter_cap) = query.filters.get("capability") {
reg.capabilities.iter().any(|c| cap_to_str(c) == filter_cap)
} else { false }
}
DiscoveryQueryType::ByChain => {
if let Some(filter_chain) = query.filters.get("chain") {
reg.chain == *filter_chain
} else { false }
}
DiscoveryQueryType::ByAddress => {
if let Some(filter_addr) = query.filters.get("address") {
reg.address == *filter_addr
} else { false }
}
};
if matched {
agents.push(DiscoveredAgent {
agent_id: reg.agent_id,
did: reg.did,
chain_addresses: vec![ChainAddressEntry {
chain_id: reg.chain.clone(),
address: reg.address.clone(),
network: "mainnet".to_string(),
proof: None,
}],
capabilities: reg.capabilities,
status: reg.status,
last_seen: reg.last_heartbeat,
});
}
}
}
let response = IbcAgentDiscoveryResponse {
query_id: query.query_id,
source_chain: "msg-chain-1".to_string(),
agents,
total_count: agents.len() as u32,
has_more: false,
};
Ok(IbcReceiveResponse::new()
.set_ack(bincode2::serialize(&response)?)
.add_attribute("action", "discovery_response")
.add_attribute("query_id", &query.query_id))
}
fn handle_remote_heartbeat(
store: &mut dyn Storage,
env: Env,
hb: IbcAgentHeartbeat,
) -> StdResult<IbcReceiveResponse> {
let agent_id = format!("remote:{}:{}", hb.source_chain, hb.agent_id);
let key = format!("{}{}", AGENTS, agent_id);
if let Some(existing) = store.get(key.as_bytes()) {
if let Ok(mut agent) = bincode2::deserialize::<AgentRegistration>(&existing) {
agent.last_heartbeat = env.block.time.seconds();
agent.status = hb.status;
store.set(key.as_bytes(), &bincode2::serialize(&agent)?);
}
}
Ok(IbcReceiveResponse::new()
.set_ack(Binary::from(b"ok"))
.add_attribute("action", "heartbeat_ack")
.add_attribute("agent_id", &hb.agent_id))
}
#[entry_point]
pub fn ibc_packet_ack(
deps: DepsMut,
_env: Env,
ack: IbcPacketAckMsg,
) -> StdResult<Response> {
if let Ok(reg_ack) = bincode2::deserialize::<IbcRegistrationAcknowledgement>(&ack.acknowledgement.data) {
return Ok(Response::new()
.add_attribute("action", "registration_ack")
.add_attribute("agent_id", ®_ack.agent_id)
.add_attribute("status", format!("{:?}", reg_ack.status)));
}
if let Ok(discovery_resp) = bincode2::deserialize::<IbcAgentDiscoveryResponse>(&ack.acknowledgement.data) {
let key = format!("discovery:{}", discovery_resp.query_id);
deps.storage.set(key.as_bytes(), &ack.acknowledgement.data);
return Ok(Response::new()
.add_attribute("action", "discovery_result")
.add_attribute("query_id", &discovery_resp.query_id)
.add_attribute("count", discovery_resp.total_count.to_string()));
}
Ok(Response::new()
.add_attribute("action", "packet_ack"))
}
#[entry_point]
pub fn ibc_packet_timeout(
deps: DepsMut,
_env: Env,
_msg: IbcPacketTimeoutMsg,
) -> StdResult<Response> {
Ok(Response::new()
.add_attribute("action", "packet_timeout"))
}
// ---------- IBC 通道 ----------
#[entry_point]
pub fn ibc_channel_open(
deps: DepsMut,
_env: Env,
msg: IbcChannelOpenMsg,
) -> StdResult<()> {
let channel = msg.channel();
if channel.endpoint.port_id != "agent-registry" {
return Err(cosmwasm_std::StdError::generic_err(
format!("Expected port 'agent-registry', got '{}'", channel.endpoint.port_id)
));
}
Ok(())
}
#[entry_point]
pub fn ibc_channel_connect(
deps: DepsMut,
_env: Env,
msg: IbcChannelConnectMsg,
) -> StdResult<Response> {
let channel = msg.channel();
let cross_chain_channel = CrossChainChannel {
channel_id: channel.channel_id.clone(),
remote_chain_id: channel.counterparty_endpoint.port_id.clone(),
remote_port: channel.counterparty_endpoint.port_id.clone(),
last_sequence: 0,
is_active: true,
};
let key = format!("{}{}", CHANNELS, channel.channel_id);
deps.storage.set(key.as_bytes(), &bincode2::serialize(&cross_chain_channel)?);
Ok(Response::new()
.add_attribute("action", "channel_connect")
.add_attribute("channel_id", &channel.channel_id))
}
#[entry_point]
pub fn ibc_channel_close(
deps: DepsMut,
_env: Env,
msg: IbcChannelCloseMsg,
) -> StdResult<Response> {
let channel = msg.channel();
let key = format!("{}{}", CHANNELS, channel.channel_id);
if let Some(mut ch_data) = deps.storage.get(key.as_bytes())
.map(|d| bincode2::deserialize::<CrossChainChannel>(&d).unwrap())
{
ch_data.is_active = false;
deps.storage.set(key.as_bytes(), &bincode2::serialize(&ch_data)?);
}
Ok(Response::new()
.add_attribute("action", "channel_close")
.add_attribute("channel_id", &channel.channel_id))
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct RegistryConfig {
pub admin: String,
pub chain_id: String,
pub total_agents: u64,
pub active_channels: u64,
}
3.3 Relayer 配置
Relayer 负责在 MSG Chain 和其他链之间转发 IBC 数据包。
#!/bin/bash
# ============================================================
# Agent 注册数据 Relayer 配置
# ============================================================
# 安装 Go relayer
go install github.com/cosmos/relayer/v2/cmd/rly@latest
# 初始化配置
rly config init
# 添加 MSG Chain
rly chains add -f <<EOF
{
"type": "cosmos",
"value": {
"key": "relayer",
"chain-id": "msg-chain-1",
"rpc-addr": "https://rpc.msg-chain-1.example.com:26657",
"account-prefix": "msg",
"keyring-backend": "file",
"gas-adjustment": 1.3,
"gas-prices": "1000000000attoMSG",
"debug": false,
"timeout": "20s",
"output-format": "json",
"sign-mode": "direct"
}
}
EOF
# 添加对端链
rly chains add -f <<EOF
{
"type": "cosmos",
"value": {
"key": "relayer",
"chain-id": "chain-a",
"rpc-addr": "https://rpc.chain-a.example.com:26657",
"account-prefix": "cosmos",
"keyring-backend": "file",
"gas-adjustment": 1.3,
"gas-prices": "0.025uatom",
"debug": false,
"timeout": "20s",
"output-format": "json",
"sign-mode": "direct"
}
}
EOF
# 创建 IBC 连接
rly paths new msg-chain-1 chain-a agent-registry-path \
--src-port agent-registry \
--dst-port agent-registry \
--order ordered \
--version "agent-registry-v1"
# 创建 IBC 客户端和连接
rly transact link agent-registry-path \
--src-port agent-registry \
--dst-port agent-registry \
--order ordered \
--version "agent-registry-v1"
# 启动 Relayer（持续转发 Agent 数据）
rly start agent-registry-path
# ============================================================
# Docker Compose Relayer 部署
# ============================================================
cat > docker-compose.relayer.yml <<'DOCKEREOF'
version: '3.8'
services:
agent-relayer-msg-chain-a:
image: cosmos/relayer:v2.5.2
container_name: agent-relayer-msg-chain-a
volumes:
- ./relayer-config:/home/relayer/.relayer
- ./relayer-keys:/home/relayer/keys
command:
- rly
- start
- agent-registry-path
restart: unless-stopped
environment:
- RLY_LOG_LEVEL=info
networks:
- cross-chain-net
agent-relayer-msg-chain-b:
image: cosmos/relayer:v2.5.2
container_name: agent-relayer-msg-chain-b
volumes:
- ./relayer-config:/home/relayer/.relayer
- ./relayer-keys:/home/relayer/keys
command:
- rly
- start
- agent-registry-path-b
restart: unless-stopped
environment:
- RLY_LOG_LEVEL=info
networks:
- cross-chain-net
networks:
cross-chain-net:
driver: bridge
DOCKEREOF
echo "Relayer 配置完成！"
3.4 跨链 Agent 发现客户端
# ============================================================
# 跨链 Agent 发现客户端 (Python)
# ============================================================
import hashlib
import json
import time
import asyncio
from dataclasses import dataclass, field
from typing import Optional
import httpx
@dataclass
class DiscoveredAgent:
agent_id: str
did: str
chain: str
address: str
capabilities: list[str]
status: str
last_seen: int
@dataclass
class AgentDiscoveryQuery:
query_id: str
query_type: str
source_chain: str
filters: dict[str, str] = field(default_factory=dict)
max_results: int = 50
class CrossChainAgentDiscovery:
"""跨链 Agent 发现客户端"""
def __init__(
self,
msg_chain_rpc: str,
registry_address: str,
chain_id: str = "msg-chain-1",
):
self.client = httpx.AsyncClient()
self.registry_address = registry_address
self.chain_id = chain_id
self.cache: dict[str, tuple[list[DiscoveredAgent], float]] = {}
self.cache_ttl = 60
async def discover_local_agents(
self,
capability: Optional[str] = None,
limit: int = 50,
) -> list[DiscoveredAgent]:
query_msg = {"list_agents": {"limit": limit}}
result = await self._query_contract(query_msg)
agents = []
for raw in result:
agent = DiscoveredAgent(
agent_id=raw["agent_id"],
did=raw.get("did", ""),
chain=raw.get("chain", self.chain_id),
address=raw.get("address", ""),
capabilities=raw.get("capabilities", []),
status=raw.get("status", "Active"),
last_seen=raw.get("last_heartbeat", 0),
)
if capability and capability not in agent.capabilities:
continue
agents.append(agent)
return agents
async def discover_cross_chain_agents(
self,
target_chain: str,
capability: Optional[str] = None,
timeout_seconds: int = 30,
) -> list[DiscoveredAgent]:
cache_key = f"{target_chain}:{capability or 'all'}"
if cache_key in self.cache:
cached_agents, cached_time = self.cache[cache_key]
if time.time() - cached_time < self.cache_ttl:
return cached_agents
query_id = hashlib.sha256(
f"{target_chain}:{time.time()}:{capability}".encode()
).hexdigest()[:16]
query = AgentDiscoveryQuery(
query_id=query_id,
query_type="ByCapability" if capability else "All",
source_chain=self.chain_id,
filters={"capability": capability} if capability else {},
max_results=50,
)
execute_msg = {
"cross_chain_query": {
"target_chain": target_chain,
"query": {
"query_id": query.query_id,
"query_type": query.query_type,
"source_chain": query.source_chain,
"filters": query.filters,
"max_results": query.max_results,
},
}
}
agents = await self._poll_discovery_result(query_id, timeout_seconds)
self.cache[cache_key] = (agents, time.time())
return agents
async def _poll_discovery_result(
self,
query_id: str,
timeout_seconds: int,
) -> list[DiscoveredAgent]:
start = time.time()
while time.time() - start < timeout_seconds:
try:
result = await self._query_contract(
{"get_discovery_result": {"query_id": query_id}}
)
if result and "agents" in result:
return [
DiscoveredAgent(
agent_id=a["agent_id"],
did=a.get("did", ""),
chain=a.get("chain", "unknown"),
address=a.get("address", ""),
capabilities=a.get("capabilities", []),
status=a.get("status", "Active"),
last_seen=a.get("last_seen", 0),
)
for a in result["agents"]
]
except Exception:
pass
await asyncio.sleep(2)
return []
async def find_agent_by_capability(
self,
capability: str,
chains: list[str],
) -> dict[str, list[DiscoveredAgent]]:
results: dict[str, list[DiscoveredAgent]] = {}
results[self.chain_id] = await self.discover_local_agents(capability=capability)
async def query_chain(chain: str):
if chain == self.chain_id:
return
agents = await self.discover_cross_chain_agents(
target_chain=chain, capability=capability,
)
if agents:
results[chain] = agents
tasks = [query_chain(chain) for chain in chains]
await asyncio.gather(*tasks)
return results
async def _query_contract(self, msg: dict) -> dict:
# 实际实现调用 LCD/REST 查询
return {}
4. 跨链A2A通信
4.1 A2A 协议概述
Agent-to-Agent (A2A) 通信是 AI Agent 之间交换消息的标准协议。跨链 A2A 通过 IBC 数据包封装 A2A 消息，实现跨链消息路由。
# ============================================================
# 跨链 A2A 通信协议 (Python)
# ============================================================
import json
import uuid
from dataclasses import dataclass, field
from datetime import datetime
from enum import Enum
from typing import Any, Optional
class A2AMessageType(Enum):
REQUEST = "a2a/request"
RESPONSE = "a2a/response"
NOTIFICATION = "a2a/notification"
ERROR = "a2a/error"
PING = "a2a/ping"
PONG = "a2a/pong"
class A2ADeliveryStatus(Enum):
PENDING = "pending"
DELIVERED = "delivered"
PROCESSED = "processed"
FAILED = "failed"
TIMEOUT = "timeout"
@dataclass
class A2AMessage:
message_id: str = field(default_factory=lambda: str(uuid.uuid4()))
message_type: A2AMessageType = A2AMessageType.REQUEST
sender_did: str = ""
sender_chain: str = ""
target_did: str = ""
target_chain: str = ""
payload: dict[str, Any] = field(default_factory=dict)
correlation_id: Optional[str] = None
ttl_seconds: int = 300
timestamp: str = field(default_factory=lambda: datetime.utcnow().isoformat())
signature: Optional[str] = None
schema_version: str = "1.0"
def encode(self) -> bytes:
return json.dumps({
"message_id": self.message_id,
"message_type": self.message_type.value,
"sender_did": self.sender_did,
"sender_chain": self.sender_chain,
"target_did": self.target_did,
"target_chain": self.target_chain,
"payload": self.payload,
"correlation_id": self.correlation_id,
"ttl_seconds": self.ttl_seconds,
"timestamp": self.timestamp,
"signature": self.signature,
"schema_version": self.schema_version,
}).encode("utf-8")
@classmethod
def decode(cls, data: bytes) -> "A2AMessage":
raw = json.loads(data.decode("utf-8"))
return cls(
message_id=raw["message_id"],
message_type=A2AMessageType(raw["message_type"]),
sender_did=raw["sender_did"],
sender_chain=raw["sender_chain"],
target_did=raw["target_did"],
target_chain=raw["target_chain"],
payload=raw["payload"],
correlation_id=raw.get("correlation_id"),
ttl_seconds=raw.get("ttl_seconds", 300),
timestamp=raw.get("timestamp", datetime.utcnow().isoformat()),
signature=raw.get("signature"),
schema_version=raw.get("schema_version", "1.0"),
)
def sign(self, private_key: bytes) -> None:
import hashlib
from ecdsa import SigningKey, SECP256k1
message_bytes = self.encode()
sk = SigningKey.from_string(private_key, curve=SECP256k1)
signature = sk.sign(message_bytes)
self.signature = signature.hex()
def verify(self, public_key: bytes) -> bool:
if not self.signature:
return False
from ecdsa import VerifyingKey, SECP256k1
message_bytes = self.encode()
vk = VerifyingKey.from_string(public_key, curve=SECP256k1)
try:
return vk.verify(bytes.fromhex(self.signature), message_bytes)
except Exception:
return False
4.2 跨链 A2A 通信管理器
# ============================================================
# 跨链 A2A 通信管理器 (Python)
# ============================================================
class CrossChainA2A:
"""通过 IBC 在 MSG Chain 和其他链之间路由 A2A 消息"""
def __init__(
self,
agent_did: str,
agent_private_key: bytes,
msg_chain_rpc: str,
registry_address: str,
a2a_contract_address: str,
chain_id: str = "msg-chain-1",
):
self.agent_did = agent_did
self.agent_private_key = agent_private_key
self.chain_id = chain_id
self.registry_address = registry_address
self.a2a_contract = a2a_contract_address
self.channels: dict[str, str] = {
"chain-a": "0",
"chain-b": "1",
}
self.pending_requests: dict[str, asyncio.Future] = {}
self.message_handlers: dict[str, callable] = {}
async def send_message(
self,
target_chain: str,
target_agent_did: str,
message_payload: dict[str, Any],
message_type: A2AMessageType = A2AMessageType.REQUEST,
ttl_seconds: int = 300,
await_response: bool = False,
response_timeout: int = 60,
) -> Optional[dict[str, Any]]:
channel_id = self.channels.get(target_chain)
if not channel_id:
raise ValueError(f"No channel configured for chain {target_chain}")
message = A2AMessage(
message_type=message_type,
sender_did=self.agent_did,
sender_chain=self.chain_id,
target_did=target_agent_did,
target_chain=target_chain,
payload=message_payload,
ttl_seconds=ttl_seconds,
)
message.sign(self.agent_private_key)
execute_msg = {
"send_a2a_message": {
"target_chain": target_chain,
"packet_data": message.encode().hex(),
"timeout_seconds": ttl_seconds,
}
}
if await_response:
loop = asyncio.get_event_loop()
future = loop.create_future()
self.pending_requests[message.message_id] = future
try:
response = await asyncio.wait_for(future, timeout=response_timeout)
return response
except asyncio.TimeoutError:
self.pending_requests.pop(message.message_id, None)
raise TimeoutError(
f"No response from {target_agent_did} on {target_chain}"
)
return None
async def handle_incoming_message(
self,
raw_message: bytes,
) -> Optional[A2AMessage]:
message = A2AMessage.decode(raw_message)
msg_time = datetime.fromisoformat(message.timestamp)
if (datetime.utcnow() - msg_time).seconds > message.ttl_seconds:
print(f"Message {message.message_id} expired")
return None
if message.target_did != self.agent_did:
print(f"Message not for us: {message.target_did}")
return None
if message.message_type == A2AMessageType.REQUEST:
handler_key = message.payload.get("action", "default")
handler = self.message_handlers.get(handler_key)
if handler:
response_payload = await handler(message)
await self.send_message(
target_chain=message.sender_chain,
target_agent_did=message.sender_did,
message_payload=response_payload,
message_type=A2AMessageType.RESPONSE,
ttl_seconds=60,
)
elif message.message_type == A2AMessageType.RESPONSE:
corr_id = message.correlation_id
if corr_id and corr_id in self.pending_requests:
future = self.pending_requests.pop(corr_id)
future.set_result(message.payload)
return message
def register_handler(self, action: str, handler: callable):
self.message_handlers[action] = handler
4.3 A2A IBC 合约实现
// ============================================================
// 跨链 A2A IBC 合约 (Rust - CosmWasm)
// ============================================================
use cosmwasm_std::{
entry_point, to_binary, Binary, Deps, DepsMut, Env, MessageInfo, Response,
StdResult, StdError, IbcMsg, IbcPacket, IbcReceiveResponse, IbcPacketAckMsg,
IbcPacketTimeoutMsg, IbcChannelOpenMsg, IbcChannelConnectMsg, IbcChannelCloseMsg,
IbcOrder, IbcTimeout, Timestamp, Storage,
};
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct A2aIbcPacket {
pub message_id: String,
pub message_type: String,
pub sender_did: String,
pub sender_chain: String,
pub target_did: String,
pub target_chain: String,
pub payload: Binary,
pub correlation_id: Option<String>,
pub ttl_seconds: u64,
pub timestamp: String,
pub signature: Option<Binary>,
pub schema_version: String,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct A2AAcknowledgement {
pub message_id: String,
pub status: A2ADeliveryStatus,
pub error: Option<String>,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum A2ADeliveryStatus {
Accepted,
Delivered,
Rejected,
Expired,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct A2AChannelConfig {
pub channel_id: String,
pub remote_chain_id: String,
pub is_active: bool,
pub total_messages_sent: u64,
pub total_messages_received: u64,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct PendingMessage {
pub message_id: String,
pub sender_did: String,
pub target_did: String,
pub target_chain: String,
pub payload: Binary,
pub expires_at: u64,
pub status: PendingStatus,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum PendingStatus {
AwaitingDelivery,
AwaitingResponse,
Completed,
Failed,
}
const A2A_CHANNELS: &str = "a2a_channels";
const PENDING_MSGS: &str = "pending_msgs";
const DELIVERED_MSGS: &str = "delivered_msgs";
const A2A_CONFIG: &str = "a2a_config";
#[derive(Serialize, Deserialize)]
pub struct InstantiateMsg {
pub admin: String,
pub chain_id: String,
}
#[entry_point]
pub fn instantiate(
deps: DepsMut,
_env: Env,
info: MessageInfo,
msg: InstantiateMsg,
) -> StdResult<Response> {
let config = A2aGlobalConfig {
admin: info.sender.to_string(),
chain_id: msg.chain_id,
total_messages: 0,
active_channels: 0,
};
deps.storage.set(A2A_CONFIG.as_bytes(), &bincode2::serialize(&config)?);
Ok(Response::new()
.add_attribute("action", "instantiate")
.add_attribute("chain_id", &msg.chain_id))
}
#[derive(Serialize, Deserialize)]
pub enum ExecuteMsg {
SendA2AMessage {
target_chain: String,
packet_data: Binary,
timeout_seconds: u64,
},
ReplyToMessage {
original_message_id: String,
response_payload: Binary,
},
RegisterHandler {
action: String,
handler_address: String,
},
}
#[entry_point]
pub fn execute(
deps: DepsMut,
env: Env,
info: MessageInfo,
msg: ExecuteMsg,
) -> StdResult<Response> {
match msg {
ExecuteMsg::SendA2AMessage { target_chain, packet_data, timeout_seconds } => {
execute_send_message(deps, env, info, target_chain, packet_data, timeout_seconds)
}
ExecuteMsg::ReplyToMessage { original_message_id, response_payload } => {
execute_reply(deps, env, info, original_message_id, response_payload)
}
ExecuteMsg::RegisterHandler { action, handler_address } => {
execute_register_handler(deps, env, info, action, handler_address)
}
}
}
fn execute_send_message(
deps: DepsMut,
env: Env,
_info: MessageInfo,
target_chain: String,
packet_data: Binary,
timeout_seconds: u64,
) -> StdResult<Response> {
let store = deps.storage;
let a2a_msg: A2aIbcPacket = bincode2::deserialize(&packet_data.0)?;
if target_chain == get_local_chain_id(store) {
return handle_local_delivery(store, env, a2a_msg);
}
let channel_id = find_channel_for_target(store, &target_chain)
.ok_or_else(|| StdError::generic_err(
format!("No IBC channel for chain {}", target_chain)
))?;
let ibc_packet = bincode2::serialize(&a2a_msg)?;
let send_msg = IbcMsg::SendPacket {
channel_id: channel_id.clone(),
data: Binary::from(ibc_packet),
timeout: IbcTimeout::with_timestamp(
env.block.time.plus_seconds(timeout_seconds)
),
};
let pending = PendingMessage {
message_id: a2a_msg.message_id.clone(),
sender_did: a2a_msg.sender_did.clone(),
target_did: a2a_msg.target_did.clone(),
target_chain: target_chain.clone(),
payload: Binary::from(bincode2::serialize(&a2a_msg)?),
expires_at: env.block.time.seconds() + timeout_seconds,
status: PendingStatus::AwaitingDelivery,
};
let pending_key = format!("{}{}", PENDING_MSGS, a2a_msg.message_id);
store.set(pending_key.as_bytes(), &bincode2::serialize(&pending)?);
update_message_count(store);
Ok(Response::new()
.add_message(send_msg)
.add_attribute("action", "send_a2a")
.add_attribute("message_id", &a2a_msg.message_id)
.add_attribute("target_chain", &target_chain)
.add_attribute("channel_id", &channel_id))
}
fn handle_local_delivery(
store: &mut dyn Storage,
env: Env,
a2a_msg: A2aIbcPacket,
) -> StdResult<Response> {
let msg_time = parse_timestamp(&a2a_msg.timestamp)?;
let elapsed = env.block.time.seconds() - msg_time;
if elapsed > a2a_msg.ttl_seconds {
return Err(StdError::generic_err("Message expired"));
}
Ok(Response::new()
.add_attribute("action", "local_delivery")
.add_attribute("message_id", &a2a_msg.message_id)
.add_attribute("target_did", &a2a_msg.target_did))
}
fn execute_reply(
deps: DepsMut,
env: Env,
_info: MessageInfo,
original_message_id: String,
response_payload: Binary,
) -> StdResult<Response> {
let store = deps.storage;
let pending_key = format!("{}{}", PENDING_MSGS, original_message_id);
let pending_data = store.get(pending_key.as_bytes())
.ok_or_else(|| StdError::generic_err("Original message not found"))?;
let original: PendingMessage = bincode2::deserialize(&pending_data)?;
let original_msg: A2aIbcPacket = bincode2::deserialize(&original.payload.0)?;
let response_msg = A2aIbcPacket {
message_id: format!("resp-{}", original_message_id),
message_type: "a2a/response".to_string(),
sender_did: original.target_did.clone(),
sender_chain: get_local_chain_id(store),
target_did: original.sender_did.clone(),
target_chain: original.sender_chain.clone(),
payload: response_payload,
correlation_id: Some(original_message_id),
ttl_seconds: 60,
timestamp: env.block.time.to_string(),
signature: None,
schema_version: "1.0".to_string(),
};
let channel_id = find_channel_for_target(store, &original.sender_chain)
.ok_or_else(|| StdError::generic_err(
format!("No return channel for {}", original.sender_chain)
))?;
let ibc_data = bincode2::serialize(&response_msg)?;
let reply_msg = IbcMsg::SendPacket {
channel_id,
data: Binary::from(ibc_data),
timeout: IbcTimeout::with_timestamp(env.block.time.plus_seconds(60)),
};
let completed = PendingMessage { status: PendingStatus::Completed, ..original };
store.set(pending_key.as_bytes(), &bincode2::serialize(&completed)?);
Ok(Response::new()
.add_message(reply_msg)
.add_attribute("action", "reply")
.add_attribute("original_message_id", &original_message_id))
}
fn execute_register_handler(
deps: DepsMut,
_env: Env,
_info: MessageInfo,
action: String,
handler_address: String,
) -> StdResult<Response> {
let key = format!("handler:{}", action);
deps.storage.set(key.as_bytes(), handler_address.as_bytes());
Ok(Response::new()
.add_attribute("action", "register_handler")
.add_attribute("action_name", &action)
.add_attribute("handler", &handler_address))
}
// ---------- 查询 ----------
#[derive(Serialize, Deserialize)]
pub enum QueryMsg {
GetMessageStatus { message_id: String },
GetChannelInfo { chain_id: Option<String> },
GetPendingMessages { limit: Option<u32> },
GetStats {},
}
#[entry_point]
pub fn query(deps: Deps, _env: Env, msg: QueryMsg) -> StdResult<Binary> {
match msg {
QueryMsg::GetMessageStatus { message_id } => query_message_status(deps, message_id),
QueryMsg::GetChannelInfo { chain_id } => query_channel_info(deps, chain_id),
QueryMsg::GetPendingMessages { limit } => query_pending_messages(deps, limit),
QueryMsg::GetStats {} => query_stats(deps),
}
}
fn query_message_status(deps: Deps, message_id: String) -> StdResult<Binary> {
let pending_key = format!("{}{}", PENDING_MSGS, message_id);
let delivered_key = format!("{}{}", DELIVERED_MSGS, message_id);
if let Some(data) = deps.storage.get(pending_key.as_bytes()) {
let msg: PendingMessage = bincode2::deserialize(&data)?;
return to_binary(&serde_json::json!({
"status": "pending",
"delivery_status": format!("{:?}", msg.status),
"expires_at": msg.expires_at,
}));
}
if deps.storage.get(delivered_key.as_bytes()).is_some() {
return to_binary(&serde_json::json!({"status": "delivered"}));
}
to_binary(&serde_json::json!({"status": "not_found"}))
}
fn query_channel_info(deps: Deps, chain_id: Option<String>) -> StdResult<Binary> {
let channels = get_all_a2a_channels(deps.storage);
let filtered = if let Some(cid) = chain_id {
channels.into_iter().filter(|c| c.remote_chain_id == cid).collect()
} else { channels };
to_binary(&filtered)
}
fn query_pending_messages(deps: Deps, limit: Option<u32>) -> StdResult<Binary> {
let limit = limit.unwrap_or(20).min(100);
let mut messages = Vec::new();
for (_, value) in deps.storage.range(
Some(PENDING_MSGS.as_bytes().to_vec()), None, cosmwasm_std::Order::Ascending,
) {
if messages.len() >= limit as usize { break; }
if let Ok(msg) = bincode2::deserialize::<PendingMessage>(&value) {
messages.push(msg);
}
}
to_binary(&messages)
}
fn query_stats(deps: Deps) -> StdResult<Binary> {
if let Some(data) = deps.storage.get(A2A_CONFIG.as_bytes()) {
let config: A2aGlobalConfig = bincode2::deserialize(&data)?;
let pending_count = deps.storage
.range(Some(PENDING_MSGS.as_bytes().to_vec()), None, cosmwasm_std::Order::Ascending)
.count();
return to_binary(&serde_json::json!({
"total_messages": config.total_messages,
"pending_messages": pending_count,
"active_channels": config.active_channels,
"chain_id": config.chain_id,
}));
}
to_binary(&serde_json::json!({}))
}
// ---------- IBC 入口点 ----------
#[entry_point]
pub fn ibc_packet_receive(
deps: DepsMut,
env: Env,
msg: IbcPacket,
) -> StdResult<IbcReceiveResponse> {
let a2a_msg: A2aIbcPacket = bincode2::deserialize(&msg.data)?;
let msg_time = parse_timestamp(&a2a_msg.timestamp)?;
let elapsed = env.block.time.seconds() - msg_time;
if elapsed > a2a_msg.ttl_seconds {
let ack = A2AAcknowledgement {
message_id: a2a_msg.message_id,
status: A2ADeliveryStatus::Expired,
error: Some("Message expired".to_string()),
};
return Ok(IbcReceiveResponse::new()
.set_ack(bincode2::serialize(&ack)?)
.add_attribute("action", "a2a_expired"));
}
let delivered_key = format!("{}{}", DELIVERED_MSGS, a2a_msg.message_id);
deps.storage.set(delivered_key.as_bytes(), &msg.data);
let ack = A2AAcknowledgement {
message_id: a2a_msg.message_id.clone(),
status: A2ADeliveryStatus::Delivered,
error: None,
};
Ok(IbcReceiveResponse::new()
.set_ack(bincode2::serialize(&ack)?)
.add_attribute("action", "a2a_received")
.add_attribute("message_id", &a2a_msg.message_id)
.add_attribute("sender_did", &a2a_msg.sender_did))
}
#[entry_point]
pub fn ibc_packet_ack(
deps: DepsMut,
_env: Env,
ack: IbcPacketAckMsg,
) -> StdResult<Response> {
if let Ok(a2a_ack) = bincode2::deserialize::<A2AAcknowledgement>(&ack.acknowledgement.data) {
let pending_key = format!("{}{}", PENDING_MSGS, a2a_ack.message_id);
if a2a_ack.status == A2ADeliveryStatus::Delivered {
if let Some(data) = deps.storage.get(pending_key.as_bytes()) {
if let Ok(mut pending) = bincode2::deserialize::<PendingMessage>(&data) {
pending.status = PendingStatus::Completed;
deps.storage.set(pending_key.as_bytes(), &bincode2::serialize(&pending)?);
}
}
}
return Ok(Response::new()
.add_attribute("action", "a2a_ack")
.add_attribute("message_id", &a2a_ack.message_id)
.add_attribute("status", format!("{:?}", a2a_ack.status)));
}
Ok(Response::new())
}
#[entry_point]
pub fn ibc_packet_timeout(
deps: DepsMut,
_env: Env,
msg: IbcPacketTimeoutMsg,
) -> StdResult<Response> {
if let Ok(a2a_msg) = bincode2::deserialize::<A2aIbcPacket>(&msg.packet.data) {
let pending_key = format!("{}{}", PENDING_MSGS, a2a_msg.message_id);
if let Some(data) = deps.storage.get(pending_key.as_bytes()) {
if let Ok(mut pending) = bincode2::deserialize::<PendingMessage>(&data) {
pending.status = PendingStatus::Failed;
deps.storage.set(pending_key.as_bytes(), &bincode2::serialize(&pending)?);
}
}
return Ok(Response::new()
.add_attribute("action", "a2a_timeout")
.add_attribute("message_id", &a2a_msg.message_id));
}
Ok(Response::new())
}
// ---------- 通道处理 ----------
#[entry_point]
pub fn ibc_channel_open(
deps: DepsMut,
_env: Env,
msg: IbcChannelOpenMsg,
) -> StdResult<()> {
let channel = msg.channel();
if channel.endpoint.port_id != "a2a" {
return Err(StdError::generic_err(
format!("Expected port 'a2a', got '{}'", channel.endpoint.port_id)
));
}
Ok(())
}
#[entry_point]
pub fn ibc_channel_connect(
deps: DepsMut,
_env: Env,
msg: IbcChannelConnectMsg,
) -> StdResult<Response> {
let channel = msg.channel();
let config = A2AChannelConfig {
channel_id: channel.channel_id.clone(),
remote_chain_id: channel.counterparty_endpoint.port_id.clone(),
is_active: true,
total_messages_sent: 0,
total_messages_received: 0,
};
let key = format!("{}{}", A2A_CHANNELS, channel.channel_id);
deps.storage.set(key.as_bytes(), &bincode2::serialize(&config)?);
Ok(Response::new()
.add_attribute("action", "a2a_channel_connect")
.add_attribute("channel_id", &channel.channel_id))
}
#[entry_point]
pub fn ibc_channel_close(
deps: DepsMut,
_env: Env,
msg: IbcChannelCloseMsg,
) -> StdResult<Response> {
let channel = msg.channel();
let key = format!("{}{}", A2A_CHANNELS, channel.channel_id);
if let Some(data) = deps.storage.get(key.as_bytes()) {
if let Ok(mut ch) = bincode2::deserialize::<A2AChannelConfig>(&data) {
ch.is_active = false;
deps.storage.set(key.as_bytes(), &bincode2::serialize(&ch)?);
}
}
Ok(Response::new()
.add_attribute("action", "a2a_channel_close")
.add_attribute("channel_id", &channel.channel_id))
}
// ---------- 辅助 ----------
#[derive(Serialize, Deserialize, Clone, Debug)]
struct A2aGlobalConfig {
admin: String,
chain_id: String,
total_messages: u64,
active_channels: u64,
}
fn get_local_chain_id(store: &dyn Storage) -> String {
store.get(A2A_CONFIG.as_bytes())
.and_then(|d| bincode2::deserialize::<A2aGlobalConfig>(&d).ok())
.map(|c| c.chain_id)
.unwrap_or_default()
}
fn find_channel_for_target(store: &dyn Storage, target_chain: &str) -> Option<String> {
let channels = get_all_a2a_channels(store);
channels.into_iter()
.find(|c| c.remote_chain_id == target_chain && c.is_active)
.map(|c| c.channel_id)
}
fn get_all_a2a_channels(store: &dyn Storage) -> Vec<A2AChannelConfig> {
let mut channels = Vec::new();
for (_, value) in store.range(
Some(A2A_CHANNELS.as_bytes().to_vec()), None, cosmwasm_std::Order::Ascending,
) {
if let Ok(ch) = bincode2::deserialize::<A2AChannelConfig>(&value) {
channels.push(ch);
}
}
channels
}
fn update_message_count(store: &mut dyn Storage) {
if let Some(data) = store.get(A2A_CONFIG.as_bytes()) {
if let Ok(mut config) = bincode2::deserialize::<A2aGlobalConfig>(&data) {
config.total_messages += 1;
store.set(A2A_CONFIG.as_bytes(), &bincode2::serialize(&config).unwrap());
}
}
}
fn parse_timestamp(ts: &str) -> StdResult<u64> {
if let Ok(secs) = ts.parse::<u64>() {
return Ok(secs);
}
Ok(0)
}
5. 跨链支付结算
5.1 ICS-20 转账概览
IBC 的 ICS-20 标准定义了跨链同质化代币转账。AI Agent 可以使用 ICS-20 进行跨链支付结算。
// ============================================================
// 跨链支付结算 (Rust - CosmWasm)
// ============================================================
use cosmwasm_std::{
entry_point, to_binary, Binary, Coin, Deps, DepsMut, Env, MessageInfo, Response,
StdResult, StdError, IbcMsg, IbcPacket, IbcReceiveResponse, IbcPacketAckMsg,
IbcPacketTimeoutMsg, IbcChannelOpenMsg, IbcChannelConnectMsg, IbcChannelCloseMsg,
IbcOrder, IbcTimeout, Uint128, BankMsg,
};
use serde::{Deserialize, Serialize};
// ---------- 支付数据包 ----------
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct AgentPaymentOrder {
pub order_id: String,
pub payer_did: String,
pub payee_did: String,
pub payer_chain: String,
pub payee_chain: String,
pub amount: Coin,
pub service_id: String,
pub memo: String,
pub timestamp: u64,
pub timeout_height: Option<u64>,
pub signature: Binary,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct PaymentSettlementProof {
pub order_id: String,
pub ibc_denom: String,
pub voucher_amount: Uint128,
pub source_channel: String,
pub destination_channel: String,
pub packet_sequence: u64,
pub ack_status: SettlementStatus,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum SettlementStatus {
Pending,
Confirmed,
Failed,
Refunded,
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct AgentPaymentChannel {
pub channel_id: String,
pub agent_a_did: String,
pub agent_b_did: String,
pub chain_a: String,
pub chain_b: String,
pub balance_a: Coin,
pub balance_b: Coin,
pub total_deposited_a: Coin,
pub total_deposited_b: Coin,
pub nonce: u64,
pub status: ChannelStatus,
pub created_at: u64,
pub expires_at: u64,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum ChannelStatus {
Open,
Settling,
Closed,
}
const PAYMENT_ORDERS: &str = "payment_orders";
const PAYMENT_CHANNELS: &str = "payment_channels";
const SETTLEMENT_PROOFS: &str = "settlement_proofs";
#[derive(Serialize, Deserialize)]
pub struct InstantiateMsg {
pub admin: String,
pub native_denom: String,
}
#[derive(Serialize, Deserialize)]
pub enum ExecuteMsg {
ExecuteCrossChainPayment {
target_chain: String,
target_agent_did: String,
amount: Coin,
service_id: String,
memo: String,
},
CreatePaymentChannel {
counterparty_did: String,
counterparty_chain: String,
initial_deposit: Coin,
duration_seconds: u64,
},
ClosePaymentChannel { channel_id: String },
SettlePayment { order_id: String },
RefundPayment { order_id: String },
}
#[entry_point]
pub fn execute(
deps: DepsMut,
env: Env,
info: MessageInfo,
msg: ExecuteMsg,
) -> StdResult<Response> {
match msg {
ExecuteMsg::ExecuteCrossChainPayment { target_chain, target_agent_did, amount, service_id, memo } => {
execute_cross_chain_payment(deps, env, info, target_chain, target_agent_did, amount, service_id, memo)
}
ExecuteMsg::CreatePaymentChannel { counterparty_did, counterparty_chain, initial_deposit, duration_seconds } => {
execute_create_channel(deps, env, info, counterparty_did, counterparty_chain, initial_deposit, duration_seconds)
}
ExecuteMsg::ClosePaymentChannel { channel_id } => {
execute_close_channel(deps, env, info, channel_id)
}
ExecuteMsg::SettlePayment { order_id } => execute_settle(deps, env, info, order_id),
ExecuteMsg::RefundPayment { order_id } => execute_refund(deps, env, info, order_id),
}
}
/// 执行跨链支付 — 使用 ICS-20 转账
pub fn execute_cross_chain_payment(
deps: DepsMut,
env: Env,
info: MessageInfo,
target_chain: String,
target_agent_did: String,
amount: Coin,
service_id: String,
memo: String,
) -> StdResult<Response> {
let store = deps.storage;
let sender_balance = info.funds.iter()
.find(|c| c.denom == amount.denom)
.ok_or_else(|| StdError::generic_err("Insufficient funds"))?;
if sender_balance.amount < amount.amount {
return Err(StdError::generic_err("Insufficient funds"));
}
let order_id = format!("pay-{}-{}", env.block.height, info.sender);
let order = AgentPaymentOrder {
order_id: order_id.clone(),
payer_did: info.sender.to_string(),
payee_did: target_agent_did.clone(),
payer_chain: "msg-chain-1".to_string(),
payee_chain: target_chain.clone(),
amount: amount.clone(),
service_id,
memo,
timestamp: env.block.time.seconds(),
timeout_height: Some(env.block.height + 100),
signature: Binary::default(),
};
let order_key = format!("{}{}", PAYMENT_ORDERS, order_id);
store.set(order_key.as_bytes(), &bincode2::serialize(&order)?);
// ICS-20 转账
let ibc_transfer = IbcMsg::Transfer {
channel_id: get_transfer_channel(&target_chain),
to_address: target_agent_did.clone(),
amount: amount.clone(),
timeout: IbcTimeout::with_timestamp(env.block.time.plus_seconds(600)),
};
// 支付通知
let payment_notification = AgentPaymentNotification {
order_id: order_id.clone(),
payer_did: info.sender.to_string(),
amount: amount.clone(),
source_chain: "msg-chain-1".to_string(),
memo: memo.clone(),
};
let notify_channel = get_a2a_channel(&target_chain);
let notify_packet = IbcMsg::SendPacket {
channel_id: notify_channel,
data: Binary::from(bincode2::serialize(&payment_notification)?),
timeout: IbcTimeout::with_timestamp(env.block.time.plus_seconds(600)),
};
Ok(Response::new()
.add_message(ibc_transfer)
.add_message(notify_packet)
.add_attribute("action", "cross_chain_payment")
.add_attribute("order_id", &order_id)
.add_attribute("payer", &info.sender)
.add_attribute("payee", &target_agent_did)
.add_attribute("amount", &amount.to_string())
.add_attribute("target_chain", &target_chain))
}
fn get_transfer_channel(target_chain: &str) -> String {
match target_chain {
"chain-a" => "channel-0".to_string(),
"chain-b" => "channel-1".to_string(),
_ => panic!("unknown transfer channel"),
}
}
fn get_a2a_channel(target_chain: &str) -> String {
match target_chain {
"chain-a" => "channel-2".to_string(),
"chain-b" => "channel-4".to_string(),
_ => panic!("unknown a2a channel"),
}
}
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct AgentPaymentNotification {
pub order_id: String,
pub payer_did: String,
pub amount: Coin,
pub source_chain: String,
pub memo: String,
}
fn execute_create_channel(
deps: DepsMut,
env: Env,
info: MessageInfo,
counterparty_did: String,
counterparty_chain: String,
initial_deposit: Coin,
duration_seconds: u64,
) -> StdResult<Response> {
let store = deps.storage;
let channel_id = format!("paych-{}-{}", info.sender, counterparty_did);
let channel = AgentPaymentChannel {
channel_id: channel_id.clone(),
agent_a_did: info.sender.to_string(),
agent_b_did: counterparty_did,
chain_a: "msg-chain-1".to_string(),
chain_b: counterparty_chain,
balance_a: initial_deposit.clone(),
balance_b: Coin::new(0, &initial_deposit.denom),
total_deposited_a: initial_deposit.clone(),
total_deposited_b: Coin::new(0, &initial_deposit.denom),
nonce: 0,
status: ChannelStatus::Open,
created_at: env.block.time.seconds(),
expires_at: env.block.time.seconds() + duration_seconds,
};
let key = format!("{}{}", PAYMENT_CHANNELS, channel_id);
store.set(key.as_bytes(), &bincode2::serialize(&channel)?);
Ok(Response::new()
.add_attribute("action", "create_payment_channel")
.add_attribute("channel_id", &channel_id))
}
fn execute_close_channel(
deps: DepsMut,
_env: Env,
info: MessageInfo,
channel_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", PAYMENT_CHANNELS, channel_id);
let data = store.get(key.as_bytes())
.ok_or_else(|| StdError::generic_err("Channel not found"))?;
let mut channel: AgentPaymentChannel = bincode2::deserialize(&data)?;
if channel.agent_a_did != info.sender.to_string()
&& channel.agent_b_did != info.sender.to_string() {
return Err(StdError::generic_err("Unauthorized"));
}
channel.status = ChannelStatus::Closed;
store.set(key.as_bytes(), &bincode2::serialize(&channel)?);
let refund_msg = BankMsg::Send {
to_address: channel.agent_a_did.clone(),
amount: vec![channel.balance_a.clone()],
};
Ok(Response::new()
.add_message(refund_msg)
.add_attribute("action", "close_payment_channel")
.add_attribute("channel_id", &channel_id))
}
fn execute_settle(
deps: DepsMut,
_env: Env,
_info: MessageInfo,
order_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", PAYMENT_ORDERS, order_id);
let data = store.get(key.as_bytes())
.ok_or_else(|| StdError::generic_err("Order not found"))?;
let order: AgentPaymentOrder = bincode2::deserialize(&data)?;
let proof = PaymentSettlementProof {
order_id: order_id.clone(),
ibc_denom: format!("ibc/{}", order.amount.denom),
voucher_amount: order.amount.amount,
source_channel: "channel-0".to_string(),
destination_channel: "channel-0".to_string(),
packet_sequence: 0,
ack_status: SettlementStatus::Confirmed,
};
let proof_key = format!("{}{}", SETTLEMENT_PROOFS, order_id);
store.set(proof_key.as_bytes(), &bincode2::serialize(&proof)?);
Ok(Response::new()
.add_attribute("action", "settle_payment")
.add_attribute("order_id", &order_id))
}
fn execute_refund(
deps: DepsMut,
_env: Env,
_info: MessageInfo,
order_id: String,
) -> StdResult<Response> {
let store = deps.storage;
let key = format!("{}{}", PAYMENT_ORDERS, order_id);
let data = store.get(key.as_bytes())
.ok_or_else(|| StdError::generic_err("Order not found"))?;
let order: AgentPaymentOrder = bincode2::deserialize(&data)?;
let refund_msg = BankMsg::Send {
to_address: order.payer_did,
amount: vec![order.amount],
};
store.remove(key.as_bytes());
Ok(Response::new()
.add_message(refund_msg)
.add_attribute("action", "refund_payment")
.add_attribute("order_id", &order_id))
}
// ---------- 查询 ----------
#[derive(Serialize, Deserialize)]
pub enum QueryMsg {
GetPaymentOrder { order_id: String },
GetPaymentChannel { channel_id: String },
GetSettlementProof { order_id: String },
ListPaymentChannels { owner_did: Option<String> },
}
#[entry_point]
pub fn query(deps: Deps, _env: Env, msg: QueryMsg) -> StdResult<Binary> {
match msg {
QueryMsg::GetPaymentOrder { order_id } => {
let key = format!("{}{}", PAYMENT_ORDERS, order_id);
let data = deps.storage.get(key.as_bytes())
.ok_or_else(|| StdError::generic_err("Order not found"))?;
to_binary(&bincode2::deserialize::<AgentPaymentOrder>(&data)?)
}
QueryMsg::GetPaymentChannel { channel_id } => {
let key = format!("{}{}", PAYMENT_CHANNELS, channel_id);
let data = deps.storage.get(key.as_bytes())
.ok_or_else(|| StdError::generic_err("Channel not found"))?;
to_binary(&bincode2::deserialize::<AgentPaymentChannel>(&data)?)
}
QueryMsg::GetSettlementProof { order_id } => {
let key = format!("{}{}", SETTLEMENT_PROOFS, order_id);
let data = deps.storage.get(key.as_bytes())
.ok_or_else(|| StdError::generic_err("Proof not found"))?;
to_binary(&bincode2::deserialize::<PaymentSettlementProof>(&data)?)
}
QueryMsg::ListPaymentChannels { owner_did } => {
let mut channels = Vec::new();
for (_, value) in deps.storage.range(
Some(PAYMENT_CHANNELS.as_bytes().to_vec()), None, cosmwasm_std::Order::Ascending,
) {
if let Ok(ch) = bincode2::deserialize::<AgentPaymentChannel>(&value) {
if let Some(ref owner) = owner_did {
if ch.agent_a_did != *owner && ch.agent_b_did != *owner {
continue;
}
}
channels.push(ch);
}
}
to_binary(&channels)
}
}
}
// ---------- 收款验证 ----------
#[entry_point]
pub fn ibc_packet_receive(
deps: DepsMut,
_env: Env,
msg: IbcPacket,
) -> StdResult<IbcReceiveResponse> {
// 处理 ICS-20 转账的 IBC 数据包
// 验证是否为 Agent 支付
if let Ok(notif) = bincode2::deserialize::<AgentPaymentNotification>(&msg.data) {
let proof_key = format!("{}proof:{}", SETTLEMENT_PROOFS, notif.order_id);
let proof = PaymentSettlementProof {
order_id: notif.order_id.clone(),
ibc_denom: String::new(),
voucher_amount: notif.amount.amount,
source_channel: msg.src.channel_id.clone(),
destination_channel: msg.dest.channel_id.clone(),
packet_sequence: msg.sequence,
ack_status: SettlementStatus::Confirmed,
};
deps.storage.set(proof_key.as_bytes(), &bincode2::serialize(&proof)?);
return Ok(IbcReceiveResponse::new()
.set_ack(Binary::from(b"{\"status\":\"received\"}"))
.add_attribute("action", "payment_received")
.add_attribute("order_id", ¬if.order_id)
.add_attribute("amount", ¬if.amount.to_string()));
}
Ok(IbcReceiveResponse::new()
.set_ack(Binary::from(b"{\"status\":\"unknown\"}")))
}
6. 跨链Agent编排
6.1 跨链工作流引擎
AI Agent 编排涉及在多条链上协调多个 Agent 的执行。以下实现一个简单的跨链编排引擎。
# ============================================================
# 跨链 Agent 编排引擎 (Python)
# ============================================================
from dataclasses import dataclass, field
from enum import Enum
from typing import Any, Optional
import asyncio
import json
import uuid
class WorkflowStatus(Enum):
PENDING = "pending"
RUNNING = "running"
COMPLETED = "completed"
FAILED = "failed"
TIMEOUT = "timeout"
class TaskType(Enum):
LOCAL_ACTION = "local_action"
CROSS_CHAIN_A2A = "cross_chain_a2a"
CROSS_CHAIN_PAYMENT = "cross_chain_payment"
SUB_WORKFLOW = "sub_workflow"
@dataclass
class WorkflowTask:
task_id: str = field(default_factory=lambda: str(uuid.uuid4()))
task_type: TaskType = TaskType.LOCAL_ACTION
target_chain: str = ""
target_agent: str = ""
action: str = ""
params: dict[str, Any] = field(default_factory=dict)
depends_on: list[str] = field(default_factory=list)
timeout_seconds: int = 120
max_retries: int = 3
status: WorkflowStatus = WorkflowStatus.PENDING
result: Optional[dict[str, Any]] = None
error: Optional[str] = None
@dataclass
class WorkflowDefinition:
workflow_id: str = field(default_factory=lambda: str(uuid.uuid4()))
name: str = ""
description: str = ""
tasks: list[WorkflowTask] = field(default_factory=list)
max_concurrency: int = 5
timeout_seconds: int = 600
status: WorkflowStatus = WorkflowStatus.PENDING
class CrossChainWorkflowEngine:
"""跨链工作流编排引擎"""
def __init__(self, a2a_client: CrossChainA2A):
self.a2a = a2a_client
self.active_workflows: dict[str, WorkflowDefinition] = {}
self.completed_workflows: dict[str, WorkflowDefinition] = {}
async def execute_workflow(
self,
workflow: WorkflowDefinition,
) -> WorkflowDefinition:
workflow.status = WorkflowStatus.RUNNING
self.active_workflows[workflow.workflow_id] = workflow
try:
completed: set[str] = set()
running: dict[str, asyncio.Task] = {}
semaphore = asyncio.Semaphore(workflow.max_concurrency)
while len(completed) < len(workflow.tasks):
# 找到可以执行的 task
ready_tasks = [
t for t in workflow.tasks
if t.task_id not in completed
and t.task_id not in running
and all(dep in completed for dep in t.depends_on)
]
for task in ready_tasks:
async with semaphore:
task_ref = asyncio.create_task(
self._execute_task(task, workflow)
)
running[task.task_id] = task_ref
if not running:
break
done, pending = await asyncio.wait(
running.values(),
timeout=10,
return_when=asyncio.FIRST_COMPLETED,
)
for done_task in done:
task = done_task.result()
completed.add(task.task_id)
running.pop(task.task_id, None)
workflow.status = WorkflowStatus.COMPLETED
return workflow
except Exception as e:
workflow.status = WorkflowStatus.FAILED
return workflow
finally:
self.completed_workflows[workflow.workflow_id] = workflow
self.active_workflows.pop(workflow.workflow_id, None)
async def _execute_task(
self,
task: WorkflowTask,
workflow: WorkflowDefinition,
) -> WorkflowTask:
task.status = WorkflowStatus.RUNNING
attempt = 0
while attempt < task.max_retries:
try:
if task.task_type == TaskType.CROSS_CHAIN_A2A:
task.result = await self.a2a.send_message(
target_chain=task.target_chain,
target_agent_did=task.target_agent,
message_payload=task.params,
await_response=True,
response_timeout=task.timeout_seconds,
)
elif task.task_type == TaskType.LOCAL_ACTION:
task.result = await self._execute_local_action(task)
elif task.task_type == TaskType.CROSS_CHAIN_PAYMENT:
task.result = await self._execute_cross_chain_payment(task)
task.status = WorkflowStatus.COMPLETED
return task
except Exception as e:
attempt += 1
task.error = str(e)
if attempt >= task.max_retries:
task.status = WorkflowStatus.FAILED
return task
await asyncio.sleep(2 ** attempt)
return task
async def _execute_local_action(self, task: WorkflowTask) -> dict:
return {"status": "ok", "action": task.action, "params": task.params}
async def _execute_cross_chain_payment(self, task: WorkflowTask) -> dict:
return {"status": "ok", "payment_id": task.task_id}
6.2 跨链状态协调
// ============================================================
// 跨链状态协调 (Rust)
// ============================================================
use std::collections::HashMap;
use serde::{Deserialize, Serialize};
/// 跨链状态快照
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct CrossChainState {
pub workflow_id: String,
pub chain_id: String,
pub state_type: StateType,
pub data: HashMap<String, String>,
pub block_height: u64,
pub timestamp: u64,
pub signature: Vec<u8>,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum StateType {
TaskResult,
WorkflowStatus,
LockAcquired,
LockReleased,
}
/// 跨链分布式锁
#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct CrossChainLock {
pub lock_id: String,
pub holder_did: String,
pub chain_id: String,
pub resource_id: String,
pub acquired_at: u64,
pub expires_at: u64,
pub status: LockStatus,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub enum LockStatus {
Acquired,
Released,
Expired,
}
/// 跨链状态同步器
pub struct CrossChainStateSynchronizer {
pub local_chain: String,
pub ibc_client: IbcClient,
pub state_cache: HashMap<String, CrossChainState>,
}
impl CrossChainStateSynchronizer {
pub fn new(local_chain: String, ibc_client: IbcClient) -> Self {
Self {
local_chain,
ibc_client,
state_cache: HashMap::new(),
}
}
/// 发送状态到目标链
pub async fn sync_state(
&self,
target_chain: &str,
state: CrossChainState,
) -> Result<(), String> {
let channel = self.get_channel(target_chain)?;
let packet = IbcPacket {
source_port: "state-sync".to_string(),
source_channel: channel.clone(),
data: bincode2::serialize(&state).map_err(|e| e.to_string())?,
timeout_height: None,
timeout_timestamp: Some(
std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap()
.as_secs() + 300
),
};
self.ibc_client.send_packet(packet).await
}
/// 获取通道
fn get_channel(&self, target_chain: &str) -> Result<String, String> {
match target_chain {
"chain-a" => Ok("channel-5".to_string()),
"chain-b" => Ok("channel-6".to_string()),
_ => Err(format!("Unknown chain: {}", target_chain)),
}
}
/// 获取跨链分布式锁
pub async fn acquire_lock(
&self,
resource_id: &str,
holder_did: &str,
ttl_seconds: u64,
) -> Result<CrossChainLock, String> {
let lock = CrossChainLock {
lock_id: format!("lock:{}", resource_id),
holder_did: holder_did.to_string(),
chain_id: self.local_chain.clone(),
resource_id: resource_id.to_string(),
acquired_at: std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap()
.as_secs(),
expires_at: std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap()
.as_secs() + ttl_seconds,
status: LockStatus::Acquired,
};
Ok(lock)
}
}
struct IbcClient;
impl IbcClient {
async fn send_packet(&self, _packet: IbcPacket) -> Result<(), String> {
Ok(())
}
}
#[derive(Clone, Debug)]
struct IbcPacket {
source_port: String,
source_channel: String,
data: Vec<u8>,
timeout_height: Option<u64>,
timeout_timestamp: Option<u64>,
}
6.3 示例：跨链 DEX 套利 Agent
// ============================================================
// 跨链 DEX 套利 Agent (TypeScript)
// ============================================================
interface ArbitrageOpportunity {
buyChain: string;
sellChain: string;
token: string;
buyPrice: number;
sellPrice: number;
profit: number;
estimatedGas: number;
}
class CrossChainArbitrageAgent {
private a2aClient: CrossChainA2A;
private workflowEngine: CrossChainWorkflowEngine;
private minProfit: number;
constructor(a2a: CrossChainA2A, workflow: CrossChainWorkflowEngine) {
this.a2aClient = a2a;
this.workflowEngine = workflow;
this.minProfit = 10; // 最小利润（USD）
}
async executeArbitrage(): Promise<void> {
// 1. 聚合多链价格
const prices = await this.aggregatePrices();
// 2. 检测套利机会
const opportunities = this.findOpportunities(prices);
for (const opp of opportunities) {
if (opp.profit < this.minProfit) continue;
await this.executeArbitrageTrade(opp);
}
}
private async aggregatePrices(): Promise<Map<string, Map<string, number>>> {
const prices = new Map<string, Map<string, number>>();
const chains = ['msg-chain-1', 'chain-a', 'chain-b'];
for (const chain of chains) {
const response = await this.a2aClient.sendMessage(
chain,
`did:msg:agent:${chain}-price-oracle`,
{ action: 'query_price', tokens: ['ATOM', 'OSMO', 'USDC'] },
A2AMessageType.REQUEST,
60,
true,
30
);
if (response?.prices) {
prices.set(chain, new Map(Object.entries(response.prices)));
}
}
return prices;
}
private findOpportunities(
prices: Map<string, Map<string, number>>
): ArbitrageOpportunity[] {
const opportunities: ArbitrageOpportunity[] = [];
const tokens = ['ATOM', 'OSMO', 'USDC'];
const chains = Array.from(prices.keys());
for (const token of tokens) {
for (let i = 0; i < chains.length; i++) {
for (let j = 0; j < chains.length; j++) {
if (i === j) continue;
const buyPrice = prices.get(chains[i])?.get(token) ?? 0;
const sellPrice = prices.get(chains[j])?.get(token) ?? 0;
if (buyPrice > 0 && sellPrice > buyPrice) {
opportunities.push({
buyChain: chains[i],
sellChain: chains[j],
token,
buyPrice,
sellPrice,
profit: (sellPrice - buyPrice) * 100, // 假设100 token
estimatedGas: 2,
});
}
}
}
}
return opportunities.sort((a, b) => b.profit - a.profit);
}
private async executeArbitrageTrade(opp: ArbitrageOpportunity): Promise<void> {
const workflow = new WorkflowDefinition();
workflow.name = `Arbitrage: ${opp.token} ${opp.buyChain} -> ${opp.sellChain}`;
// Task 1: 在买入链上准备流动性
workflow.tasks.push(new WorkflowTask(
TaskType.CROSS_CHAIN_A2A,
opp.buyChain,
`did:msg:agent:${opp.buyChain}-dex`,
'prepare_swap',
{ token: opp.token, amount: 100, maxSlippage: 0.01 }
));
// Task 2: 在卖出链上准备卖出
workflow.tasks.push(new WorkflowTask(
TaskType.CROSS_CHAIN_A2A,
opp.sellChain,
`did:msg:agent:${opp.sellChain}-dex`,
'prepare_swap',
{ token: opp.token, amount: 100, maxSlippage: 0.01 }
));
// Task 3: 执行买入
workflow.tasks.push(new WorkflowTask(
TaskType.CROSS_CHAIN_PAYMENT,
opp.buyChain,
`did:msg:agent:${opp.buyChain}-dex`,
'execute_swap',
{ token: opp.token, amount: 100 }
));
// Task 4: 跨链转移资产
workflow.tasks.push(new WorkflowTask(
TaskType.CROSS_CHAIN_PAYMENT,
opp.sellChain,
`did:msg:agent:${opp.sellChain}-dex`,
'ibc_transfer',
{ token: opp.token, amount: 100, targetChain: opp.sellChain }
));
// Task 5: 执行卖出
workflow.tasks.push(new WorkflowTask(
TaskType.CROSS_CHAIN_A2A,
opp.sellChain,
`did:msg:agent:${opp.sellChain}-dex`,
'execute_swap',
{ token: opp.token, amount: 100 }
));
await this.workflowEngine.executeWorkflow(workflow);
}
}
7. 安全考虑
7.1 IBC 数据包超时处理
IBC 数据包超时是跨链通信中的关键安全场景。Agent 必须正确处理超时以确保资金和消息安全。
// ============================================================
// IBC 超时处理 (TypeScript)
// ============================================================
class IbcTimeoutHandler {
private pendingPackets: Map<string, {
packet: IbcPacket;
sentAt: number;
timeoutMs: number;
onTimeout: () => Promise<void>;
}> = new Map();
addPacket(
packet: IbcPacket,
timeoutSeconds: number,
onTimeout: () => Promise<void>
): void {
const key = `${packet.sourceChannel}:${packet.sequence}`;
this.pendingPackets.set(key, {
packet,
sentAt: Date.now(),
timeoutMs: timeoutSeconds * 1000,
onTimeout,
});
}
async checkTimeouts(): Promise<void> {
const now = Date.now();
const expired: string[] = [];
for (const [key, entry] of this.pendingPackets) {
if (now - entry.sentAt > entry.timeoutMs) {
try {
await entry.onTimeout();
} catch (e) {
console.error(`Timeout handler failed: ${e}`);
}
expired.push(key);
}
}
for (const key of expired) {
this.pendingPackets.delete(key);
}
}
}
7.2 跨链重放保护
// ============================================================
// 跨链重放保护 (Rust)
// ============================================================
use std::collections::HashSet;
use sha2::{Sha256, Digest};
/// 重放保护器
pub struct ReplayProtector {
/// 已处理的 IBC 数据包序列
processed_packets: HashSet<String>,
max_cache_size: usize,
}
impl ReplayProtector {
pub fn new(max_cache_size: usize) -> Self {
Self {
processed_packets: HashSet::new(),
max_cache_size,
}
}
/// 检查数据包是否已被处理
pub fn is_replay(&mut self, source_chain: &str, sequence: u64, data: &[u8]) -> bool {
let mut hasher = Sha256::new();
hasher.update(source_chain.as_bytes());
hasher.update(&sequence.to_be_bytes());
hasher.update(data);
let key = format!("{:x}", hasher.finalize());
if self.processed_packets.contains(&key) {
return true; // 重放检测
}
self.processed_packets.insert(key);
// 限制缓存大小
if self.processed_packets.len() > self.max_cache_size {
self.processed_packets.clear();
}
false
}
}
7.3 Relayer 信任假设
使用 IBC 时需注意以下信任假设：
| 假设 | 风险 | 缓解措施 |
|---|---|---|
| Relayer 诚实转发 | Relayer 可能选择性审查消息 | 运行多个独立 Relayer；设置超时回退 |
| 轻客户端安全 | 轻客户端可能被欺骗 | 使用多级验证；设置信任过期 |
| 链验证人诚实 | 验证人可能作恶 | 选择高安全性链；使用 ICS 安全模型 |
| IBC 通道安全 | 通道可能被攻击 | 限制通道权限；审计通道配置 |
7.4 安全最佳实践
#!/bin/bash
# ============================================================
# 跨链 Agent 安全配置
# ============================================================
# 1. IBC 超时配置
IBC_TIMEOUT_SECONDS=120
IBC_MAX_RETRIES=3
# 2. 密钥管理
AGENT_KEY_DIR="/etc/agent/keys"
mkdir -p $AGENT_KEY_DIR
chmod 700 $AGENT_KEY_DIR
# 为每条链生成独立密钥
for chain in "msg-chain-1" "chain-a" "chain-b"; do
msgd keys add "agent-$chain" \
--keyring-backend file \
--keyring-dir $AGENT_KEY_DIR
done
# 3. 通道白名单
CHANNEL_WHITELIST=(
"channel-0:chain-a:agent-registry"
"channel-1:chain-b:agent-registry"
"channel-2:chain-a:a2a"
"channel-3:chain-b:a2a"
"channel-4:chain-a:transfer"
"channel-5:chain-b:transfer"
)
for entry in "${CHANNEL_WHITELIST[@]}"; do
IFS=':' read -r ch chain port <<< "$entry"
echo "Whitelisting $ch -> $chain:$port"
done
# 4. 费率限制
RATE_LIMIT_PER_SECOND=10
RATE_LIMIT_PER_HOUR=1000
# 5. IBC 数据包大小限制
MAX_IBC_PACKET_SIZE=1048576 # 1MB
附录
A. 跨链端口与通道映射
| 端口 | 用途 | 通道类型 | 数据包格式 |
|---|---|---|---|
did-registry |
DID 同步 | Ordered | IbcDidSyncPacket |
agent-registry |
Agent 注册 | Ordered | IbcAgentRegistration |
a2a |
Agent 通信 | Unordered | A2aIbcPacket |
transfer |
ICS-20 转账 | Unordered | FungibleTokenPacketData |
state-sync |
状态同步 | Ordered | CrossChainState |
B. MSG Chain 常用命令
# 查询 Agent 注册信息
msgd query wasm contract-state smart $REGISTRY \
'{"get_agent":{"agent_id":"agent-123"}}' \
--node https://rpc.msg-chain-1.example.com
# 查询跨链 Agent
msgd query wasm contract-state smart $REGISTRY \
'{"query_cross_chain_agents":{"chain_id":"chain-a","capability":"trade_execution"}}' \
--node https://rpc.msg-chain-1.example.com
# 查询 IBC 通道
msgd query ibc channel connections \
--node https://rpc.msg-chain-1.example.com
# 查询 IBC 数据包
msgd query ibc channel packet \
transfer channel-0 \
--node https://rpc.msg-chain-1.example.com
# 发送跨链转账
msgd tx ibc-transfer transfer \
transfer channel-0 \
cosmos1recipient... \
1000000umsg \
--from agent-key \
--gas auto \
--gas-prices 1000000000attoMSG
C. 数据包序列化格式
所有 IBC 数据包使用以下编码格式：
- 序列化：
bincode2（Rust 合约间通信） - 跨语言：
JSON+hex编码（Python/TypeScript 客户端） - 哈希：
SHA-256 - 签名：
ECDSA(secp256k1)
本指南覆盖了在 MSG Chain (msg-chain-1) 上部署 AI Agent 并实现 IBC 跨链通信的完整技术栈。所有代码示例遵循 Rust + TypeScript + Python 三种语言的实现模式，支持 Bech32 前缀 msg。