x402 Protocol 🔌 MCP Server

httpay.xyz — x402 Pay-Per-Call API Marketplace

Pay per call. No API keys. No subscriptions.

307
Endpoints
9
Categories
$0.001
Starting Price
🟢 Real payments. Live now.
307 endpoints live on Base
2 external wallets already paying
Real USDC transactions on-chain
Listed on Bazaar marketplace
Fun
$0.001
Jokes, generators, roasts, memes
Utility
$0.005
DNS, geo, crypto prices, news
Data
$0.01
Web scrape, contract analysis
Premium
$0.05
AI models, image gen, sentiment

⚡ High-Value Endpoints

🚀 Try It — The 402 Flow

1 Call any endpoint
You'll get back HTTP 402 with payment details.
curl -s https://httpay.xyz/api/news/crypto
# → 402 { "x402Version": 1, "accepts": [{ "maxAmountRequired": "5000", ... }] }
2 Pay with the x402 header
Sign a USDC payment and include it as a header. The x402 SDK handles this.
# Using the x402 SDK (Node.js):
import { withPayment } from "x402-fetch";
const response = await withPayment(
  fetch("https://httpay.xyz/api/news/crypto"),
  wallet
);
3 Get your data
Payment settles on Base L2. You get the response instantly.
# → 200 { headlines: [...], source: "CoinDesk, The Defiant, ..." }
🤖

For Machines

x402 Protocol

HTTP 402 + crypto payments. Agents pay per API call with USDC on Base. No keys, no OAuth.

👤

For Humans

OpenPubkey (OPK)

Sign in with Google → get a wallet. Pay the same APIs without touching crypto directly.

All Categories

🧠 AI & Language Models
🖼️ Image Generation
🔍 Web Search & Scraping
💱 Crypto & Finance
🌐 DNS & Domains
📍 Geo & Location
🔐 Identity & Auth
🛠️ Utilities
📊 Data & Analytics

🔌 MCP Server — One Command

Give Claude, Cursor, or any MCP-compatible agent instant access to 307 pay-per-call APIs. No configuration needed.

npx @httpay/mcp

Drop this in your mcp.json — agents start calling and paying automatically.

⚡ Try 10 calls for $0.01

No signup. No API keys. Just send USDC on Base and start calling instantly.

Get a Base wallet (Coinbase, MetaMask)
Add a few cents of USDC
Call any endpoint — it pays itself
npx @httpay/mcp
# or curl https://httpay.xyz/api/joke → pay the 402 → profit