🚀 Curated list of x402 resources: HTTP 402 Payment Required protocol for blockchain payments, crypto micropayments, AI agents, API monetization. Includes SDKs (TypeScript, Python, Rust), examples, facilitators (Coinbase, Cloudflare), MCP integration, tutorials. Accept USDC payments with one line of code. Perfect for AI agent economy.

The MPP registry — 100+ Machine Payments Protocol tools, SDKs, services, and payment methods across 15+ chains. The definitive directory for Stripe + Tempo agent payments.

XMR402 is an open, neutral standard for internet-native payments. It absolves the Internet's original sin by natively making payments possible between clients and servers, creating win-win economies that empower agentic payments at scale. XMR402 exists to build a more free and fair internet.

Korean resources and tutorials for x402 payment protocol on Base chain

curl for x402 and MPP paid APIs. CLI + MCP proxy that auto-pays any endpoint on Base, Solana, and Tempo. Zero crypto code on the buyer side.

One-command local development environment for HTTP 402 Payment Required protocol with blockchain payments (EIP-3009 USDC)

Turn any API or MCP server into a paid service

FastAPI middleware for Machine Payments Protocol (MPP). Add 402 Payment Required challenges, secure sessions, and receipt validation to your APIs for AI agents.

Base skill for x402 payment protocol — teach any AI agent to pay for HTTP 402 APIs with ERC20/TRC20 tokens. Build your own paid-API skills on top of this.

t402 Payment Protocol - The Official Payment Protocol for USDT

The x402 Service Encyclopedia — Every service ranked, reviewed, and documented. Community knowledge base for the AI agent economy.

A CLI tool and web dashboard for inspecting, testing, and debugging Machine Payments Protocol flows. Think "Postman for HTTP 402" — it visualizes the full challenge-response-receipt cycle, simulates payment failures, validates receipt signatures, benchmarks session channels, and generates test reports.

💻 Spin up a complete local x402 payment server to test the HTTP 402 Payment Required protocol with blockchain payments effortlessly.

Industrial-grade Monero payment gating for modern APIs. IETF-compliant, 0-conf enabled, and built for the sovereign internet.

Wallet-signed, pay-per-request data utilities (CSV validation, data cleaning, PDF extraction) using the x402 HTTP payment flow.

HTTP finally gets paid. An open protocol and TypeScript SDK for HTTP 402 Payment Required.

x402 service provider tooling for Azeth — gate Hono endpoints behind x402 payments

Multi-chain settlement cost router for the x402 payment protocol. Selects the cheapest or fastest blockchain for each AI agent micropayment.

Automatic micro-donations powered by x402. Drop-in Express/Next.js middleware that sends USDC to charities on every user action. npm install x402charity.

An offline-first CLI for simulating the x402 payment protocol locally—no wallet, no RPC, no network required.