@mekik/a2a

A2A transport for mekik: serve a MekikApp as an Agent2Agent agent — an Agent Card at /.well-known/agent-card.json and the A2A JSON-RPC methods over HTTP — so other agents can send it messages and answer its human-in-the-loop pauses as input-required tasks.

import { mekik, MekikA2aServer } from "@mekik/core";
import { serveA2a } from "@mekik/a2a";

const app = mekik({ graph, reply: (s) => s.reply as string });
const agent = new MekikA2aServer(app, {
    name: "Support desk",
    description: "Answers questions about orders.",
    url: "https://bot.example.com/a2a",
    skills: catalog.list(),   // optional: the app's skills on the card
});
serveA2a(agent, { port: 8901 });   // GET /.well-known/agent-card.json, POST /a2a

One mekik conversation is one A2A contextId; one turn is one task. A task whose run paused for a human is input-required, and the next message on that task answers the pause. message/send, tasks/get and tasks/cancel are implemented; streaming and push notifications are not (the card says so). Zero dependencies; a2aRequestHandler mounts on any Node server. Wire rules: PROTOCOL.md §14. Docs: https://mekik.aimtune.dev/serving/a2a.