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fix(core): increase A2A agent timeout to 30 minutes #21028

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Merged
adamfweidman merged 1 commit into from
Mar 3, 2026
Merged

fix(core): increase A2A agent timeout to 30 minutes #21028

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16 changes: 14 additions & 2 deletions packages/core/src/agents/a2a-client-manager.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -23,8 +23,20 @@ import {
createAuthenticatingFetchWithRetry,
} from '@a2a-js/sdk/client';
import { v4 as uuidv4 } from 'uuid';
import { Agent as UndiciAgent } from 'undici';
import { debugLogger } from '../utils/debugLogger.js';

// Remote agents can take 10+ minutes (e.g. Deep Research).
// Use a dedicated dispatcher so the global 5-min timeout isn't affected.
const A2A_TIMEOUT = 1800000; // 30 minutes
const a2aDispatcher = new UndiciAgent({
headersTimeout: A2A_TIMEOUT,
bodyTimeout: A2A_TIMEOUT,
});
const a2aFetch: typeof fetch = (input, init) =>
// @ts-expect-error The `dispatcher` property is a Node.js extension to fetch not present in standard types.
fetch(input, { ...init, dispatcher: a2aDispatcher });

export type SendMessageResult =
| Message
| Task
Expand Down Expand Up @@ -79,9 +91,9 @@ export class A2AClientManager {
throw new Error(`Agent with name '${name}' is already loaded.`);
}

let fetchImpl: typeof fetch = fetch;
let fetchImpl: typeof fetch = a2aFetch;
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@jacob314 jacob314 Mar 3, 2026

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can you add a test that verifies that the timeout passed in is actually respected? particularly given we ware passing it in getting around the type system.

if (authHandler) {
fetchImpl = createAuthenticatingFetchWithRetry(fetch, authHandler);
fetchImpl = createAuthenticatingFetchWithRetry(a2aFetch, authHandler);
}

const resolver = new DefaultAgentCardResolver({ fetchImpl });
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