x402 Ecosystem Explorer

Open-source Infrastructure for MCP and x402

The Open Payment Gateway for Humans and AI Agents.

Instantly add x402 crypto payments to any website or API using the x402 protocol. 🚀 High-performance cloud app to monetize APIs & websites with Coinbase x402 blockchain payments

The best way to monetize AI applications & MCP, using x402, CDP Smart Wallets & Paymaster

URL shortener

A toolkit for building micropayment-gated MCP servers

🚀 Curated resources for Google's Agent Payments Protocol (AP2), A2A & x402 — blogs, videos, repos & specs. Contributions welcome!

Consensus deduplication proxy supporting x402 payments.

Demos and starter code for building agentic finance apps with Crossmint

Protect your APIs with pay-per-call logic using a single Spring Boot annotation.

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

Instant SIM card based wallets for x402 protocol

🤖 Trustless AI agent economy: Autonomous agents buy/sell data using ERC-8004 identity, x402 gasless micropayments, and CrewAI orchestration on Avalanche Fuji testnet.

Machine 2 Machine Protocol, x402 + A2A + MCP

An Express-compatible payment gateway middleware for X402-protected MCP endpoints.

A technical specification for the Open Commerce Standard (OCS), an extensible HTTP API for digital commerce. Supports universal clients, capability discovery, structured metadata, and web3-native payments via x402 Protocol for instant blockchain transactions.

daydreams agent + mcp to use coinbase bazaar listings + client for humans to read whats available

x402 Payment Protocol SDKs - Dead simple micropayments for APIs and AI agents

x402 protocol implementation for Vara Network