@eidentic/a2a

Agent-to-Agent (A2A) protocol interoperability for Eidentic — expose a Eidentic agent as an A2A endpoint (Hono routes serving .well-known/agent-card.json and JSON-RPC), or consume a remote A2A agent as a first-class Eidentic tool. Implements the A2A v0.3 specification.

Install

pnpm add @eidentic/a2a

Usage

Expose an agent as an A2A server

import { a2aRoutes } from "@eidentic/a2a";
import { Hono } from "hono";

const app = new Hono();

app.route("/", a2aRoutes({
  agent: myAgent,
  card: {
    name: "Support Agent",
    description: "Handles customer support queries.",
    version: "1.0.0",
  },
}));

Call a remote A2A agent as a Eidentic tool

import { a2aTool, httpA2ATransport } from "@eidentic/a2a";

const remoteTool = a2aTool(httpA2ATransport("https://agent.example.com"), {
  id: "remote_support",
  description: "Delegates to the remote support agent.",
});

const agent = new Agent({ id: "orchestrator", model, store, tools: [remoteTool] });

Links

• GitHub
• Issue tracker
• Root README

Apache-2.0