Awesome Projects

x402 Enabled APIs & Services

Platforms that implement or enable payments, monetization, or x402 integration.

• 402links - Monetize any link with HTTP 402
• proxy402 - Monetize any link in seconds
• Gatepay - Monetize any digital content with crypto payments
• httpayer - Automated x402 payments for Web2, Web3 and AI Agents
• snack.money - Send micropayments
• MCPay - Payments for MCPs
• Daydreams Router - Generate images, videos, and LLMs in one flow with USDC
• Meridian - x402 payment rails for the agent economy
• tip.md - Get rewarded for your open source work in minutes
• ROZO Bananary - Generate images and pay with x402
• 402 load network - The x402 toolkit for ANS-104 dataitems
• xcache.io - Create your own cache, no account required, just pay with x402
• Einstein AI - AI blockchain intelligence - whale tracking, smart money, launchpad monitoring
• OpSpawn A2A x402 Gateway - AI agent services with x402 micropayments, Google A2A protocol, and multi-chain support (Base, SKALE, Arbitrum)
• x402-api - Unified DeFi data API (CoinGecko, DefiLlama, Hyperliquid, GoPlus, Blockchair) with x402 micropayments on Base. MCP server + ElizaOS plugin available. Github
• x402 AI API — zeroreader - 29 Cloudflare Workers AI models (LLM, Embeddings, Image, Audio, Translation) via x402 micropayments on Base. OpenAI-compatible, streaming, batch. OpenAPI
• SIBYL - Autonomous crypto intelligence agent on Base - token scoring, rug/honeypot detection, builder value analysis via x402 micropayments
• PoolPulse - Pre-trade DEX execution signals for autonomous DeFi agents on Base — CLMM slippage, MEV scoring, routing hints for 33 Uniswap V3 + Aerodrome pools. x402 micropayments ($0.001–$0.25 USDC). OpenAPI | Examples
• MoltGuard - All-in-one trust & integrity API for the x402 agent economy — agent trust scoring, Sybil detection, Polymarket integrity, Ed25519-signed Verifiable Credentials, plus three vertical modules: MT Shopping (BuyerAgentCredentials for agentic commerce), MT Travel (TravelAgentCredentials with delegation chains), and MT Skills (8-point security audits + VerifiedSkillCredentials for AI agent skills). 19 endpoints, x402 micropayments on Base. MCP | Docs

x402 Developer Tools & SDKs

Libraries, SDKs, and dev tools for building with x402.

• a2a x402 TypeScript library
• x402 dotnet library
• mcp-go-x402 - Go SDK for MCP x402
• x402 Debug Tool - Debugging and testing tool for x402
• x402 specs - Official specification
• thirdweb - Infrastructure for AI Agents (supports x402 integrations)
• x402scan - Explore and analyze x402 transactions
• corbits - Ready your apps for Agentic Commerce
• x402station - Discover and monitor x402 services
• x402magic - Build payment-protected APIs in minutes with TypeScript
• x402-solana - Solana SDK for x402
• mogami.tech - SDKs, tools, and services built in Java
• x402-proxy - curl for x402 paid APIs. CLI and library that auto-pays HTTP 402 responses with USDC on Base and Solana, with MCP stdio proxy for AI agents. npx x402-proxy.

x402 Developer Sandboxes & Testing

Tools and playgrounds to experiment and prototype with x402.

• x402 Cloudflare Playground - Run and test x402 flows in Cloudflare Workers
• x402 Test Page - x402 test payment
• x402 Conole - debugger

x402 Learning & Community Resources

Educational content, directories, and resource hubs.

• awesome-x402 - Curated list of x402-related projects
• Firecrawl - Turn websites into LLM-ready data (useful for x402 + agentic use cases)
• x402 Ecosystem - Overview of all ecosystem participants
• x402 on Coingecko - Top x402 Ecosystem Coins by Market Cap