China Data Gateway for AI Agents · 中国数据 · 直供 AI 代理
Pay-per-call APIs designed for autonomous agents. Built on the X402 protocol — settled in USDC on Base, no accounts, no API keys, no subscriptions.
🌐 Live: cn402.com
| Endpoint | Price | Description | Status |
|---|---|---|---|
GET /forex |
$0.03 | Real-time FX rates — USDCNY and major pairs (ECB reference data) | ✅ Live |
GET /holiday |
$0.01 | China official holidays & workday lookup with makeup days | 🚧 Planned |
GET /astock |
$0.10 | A-share market snapshot — SSE/SZSE indices, northbound flow | 🚧 Planned |
GET /crypto |
$0.05 | Multi-asset crypto snapshot with RSI/MA technical indicators | 🚧 Planned |
Without payment — receive 402 with payment terms:
curl https://api.cn402.com/forex?pair=USDCNY
With X402 client (TypeScript example):
import { wrapFetchWithPayment } from "x402-fetch";
const fetchWithPayment = wrapFetchWithPayment(fetch, walletClient);
const res = await fetchWithPayment("https://api.cn402.com/forex?pair=USDCNY");
Most agent-facing APIs are US-centric. cn402 closes the China data gap — A-share quotes, CNY rates, mainland holidays — priced for the high-frequency consumption pattern of autonomous agents, settled trustlessly on Base.
- Protocol: x402 (HTTP 402 Payment Required) + EIP-3009
- Settlement: USDC on Base mainnet via Coinbase CDP facilitator
- Server: Node.js + Express +
x402-express - Site: Astro on Cloudflare Workers
- Wallet:
0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e
/forex first paid call on Base mainnet:
basescan.org/tx/0x96e74c68...d3a25d
MIT — feel free to fork, learn, build on top.
Built solo. Questions / collab: business@cn402.com (coming soon)