x402 Ecosystem Explorer

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

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A toolkit for building micropayment-gated MCP servers

Consensus deduplication proxy supporting x402 payments.

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

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

Demos and starter code for building agentic finance apps with Crossmint

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

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

Machine 2 Machine Protocol, x402 + A2A + MCP

x402 protocol implementation for Vara Network

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

x402 payments implementation in FastAPI & Pydantic using 1Shot API as a facilitator.

Learn x402 through real-world demos of paywalled endpoints and instant payment flows.

x402-vara Browser Wallet Payment Template

Authorization-based ERC20 payment layer using EIP-3009 and X-PAYMENT headers.

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

Awesome Servers with x402 Payment Protocol Integration