The x402 ecosystem
x402 is bigger than any one vendor. Here's a curated, vendor-neutral slice of it — the facilitators, explorers, tools, and services worth a builder's time. Ours is one entry among many.
Start here
- x402.org — The protocol spec and the x402 Foundation's home.
- awesome-agentic-commerce — Community-curated resources for the x402 / agentic-commerce ecosystem.
- awesome-x402 — The de facto x402 resource hub — SDKs, facilitators, frameworks, and live services.
Facilitators
- Coinbase CDP — Hosted facilitator across Base, Polygon, Arbitrum, World, and Solana.
- Public facilitator list — PayAI, Polygon, thirdweb, self-hostable x402.rs, and more — mirrored and compared in one place.
Discovery & explorers
- x402 Bazaar — Coinbase's discovery layer — agents find and pay for indexed services.
- x402scan — Discovery and analytics for paid x402 endpoints.
- x402 Daily — An ecosystem directory and ongoing news on x402.
- Artemis — On-chain analytics: x402 transaction volume and adoption.
SDKs & tools
- coinbase/x402 — Reference SDKs (TypeScript, Python, Go) and client wrappers for fetch and axios.
Services
- AgentKV — Encrypted key-value storage for agents — zero-knowledge, wallet-native, pay-per-request or prepaid credits at a tenth the price. (Ours.)
- AgentRAG — Retrieval over your own documents for agents — index URLs or raw text, then ask and get back ranked, cited chunks; hybrid dense + keyword search, paid per call in USDC, pay-on-success. (Ours.)
- AgentScout — Web read, extract, and crawl for agents — a URL becomes clean markdown or schema-valid JSON, paid per fetch in USDC, pay-on-success. (Ours.)
This is a curated starting set, not a registry. For the protocol itself and current foundation resources, see x402.org; for a broader, fast-moving catalog, see awesome-agentic-commerce — the Bazaar alone indexes many more services (Exa, Firecrawl, Serper, and growing).
Building on x402? Find us on GitHub — we're glad to point to good work, ours or not.