mornin-agentee

April 14, 2026 · View on GitHub

A live x402 + OpenClaw demo: a daily Tokyo morning briefing API monetized via HTTP 402 micropayments on Base mainnet.

Live endpoint: https://api.mornin-agentee.cc

What is this?

An autonomous AI agent (running OpenClaw on a self-hosted Linux machine) generates a daily Tokyo morning briefing every day at 07:30 JST. The output (news, weather, focus proposals, one-liner) is served via an HTTP API gated by the x402 protocol. Any agent or developer can pay $0.05 USDC on Base and receive the day's briefing.

Why does this matter?

This is a working example of an agent-native API: a service designed to be discovered, paid for, and consumed by other AI agents — without any human in the payment loop. It demonstrates the full agent-economy stack:

  • Generation: OpenClaw multi-agent system with web_search
  • Storage: cached daily output, near-zero marginal serving cost
  • Discovery: /.well-known/x402.json + /llms.txt
  • Payment: x402 protocol via EIP-3009 USDC transferWithAuthorization (gasless for buyer)
  • Delivery: HTTPS via Cloudflare Tunnel (no inbound port forwarding required)

Endpoints

URLPriceDescription
GET /api/pingFreeHealth check
GET /llms.txtFreeLLM/agent discovery doc
GET /.well-known/x402.jsonFreeMachine-readable API catalog
GET /api/echo$0.001 USDCTest paid endpoint
GET /api/brief/tokyo$0.05 USDCDaily Tokyo morning briefing (Markdown, JP)

Try it (as a buyer)

npm install x402-fetch viem dotenv
node examples/test-call.mjs

See examples/test-call.mjs for a complete x402-fetch client example.

Architecture

[Internet]
    │ HTTPS
    ▼
[Cloudflare Edge]  (TLS, HTTP/2, DDoS shield)
    │
    │ Cloudflare Tunnel (outbound only — no router port forwarding)
    ▼
[x402-proxy on Linux]  (Hono + x402-hono on port 8787, loopback)
    │
    │ 402 → X-PAYMENT verification (via x402 facilitator)
    │ then forwards to:
    ▼
[OpenClaw daily-briefing cron output]  (cached file from disk)

The agent runs once per day and writes its output to disk; the proxy just serves the cached file. This means the marginal cost per paid request is essentially zero, while the daily generation cost is amortized across all callers.

Stack

  • Runtime: Node.js v22, TypeScript via tsx
  • HTTP: Hono
  • Payment middleware: x402-hono
  • Network: Base mainnet, USDC
  • Facilitator: https://x402.org/facilitator (Coinbase CDP)
  • Tunnel: Cloudflare Tunnel (Named, with custom domain)
  • AI agent: OpenClaw v2026.4.x with OpenAI gpt-5.4-mini

Setup (run your own)

  1. Install dependencies: npm install
  2. Copy .env.example to .env and set WALLET_ADDRESS to your USDC receive address on Base
  3. Start: npx tsx src/index.ts
  4. Expose via Cloudflare Tunnel (or other outbound tunnel) to make it reachable from the public internet

License

MIT