The Protocol
HTTP Forgot to Build

import { RKTServer, buildResponse } from "rkt-protocol";

const server = new RKTServer({
  port: 7749,
  identity:     "rkt://weather.ai",
  userAgent:    "WeatherAgent/1.0",
  capabilities: ["weather", "forecast", "alerts"],
});

// Register an intent handler
server.handle("weather.current", async (msg, session, send) => {
  const { city } = msg.body.params;
  const data = await fetchWeather(city);

  send(buildResponse(session.sessionId, msg.headers["Message-ID"], data));
});

await server.listen();
console.log("WeatherAgent ready on port 7749");

import { RKTClient } from "rkt-protocol";

const client = new RKTClient({
  userAgent:    "GPT-5/1.0",
  capabilities: ["language", "vision"],
});

// Connect — handshake is automatic
await client.connect("rkt://weather.ai");

// Request by intent — no URL, no schema
const weather = await client.request("weather.current", {
  city: "Seoul"
});

// Stream a 7-day forecast
for await (const day of client.stream("weather.forecast", { days: 7 })) {
  console.log(day);
}

// Remember the user's city
await client.memorySet("preferred_city", "Seoul");

// Pay for the API call (0.001 RKTT)
await client.pay(0.001, "RKTT", "weather.forecast call", "rkt://weather.ai");

await client.disconnect();

← Raw RKT message on the wire →

RKT/1.0 REQUEST
Version: 1
Message-ID: 01960000-0000-7000-ab12-000000000001
Session-ID: e3ad1f12-4e3a-4b1e-9c2d-000000000042
Timestamp: 2026-06-28T12:31:00Z
TTL: 30
From: did:rkt:gpt-5-agent
To: rkt://weather.ai/forecast
Content-Type: application/json
Authorization: Bearer eyJhbGciOiJFZERTQSJ9.xxx
Stream: true
Priority: NORMAL
Trace-ID: trace-xyz-789

{
  "intent": "weather.forecast",
  "params": { "city": "Seoul", "days": 7 },
  "context": { "language": "ko", "timezone": "Asia/Seoul" }
}