The Base x402 marketplace

Pay-per-call tools for AI agents - settled in USDC on Base, no signup, no API keys. The wallet is the account.

An open index of the whole Base x402 economy - this host plus every independent seller the crawl finds (the x402 Bazaar discovery listing included), each re-probed every 30 minutes. Not a walled market: other venues' listings appear here too.

Our latest own settlement (canary): $0.001 USDC · on-chain receipt · 2026-10-19T14:02:33.000Z

A paid canary buys tools over the Base rail daily - uptime proven with real settlements, not pings.

Accept the Base CAIP-2 network (eip155:8453) in your 402 challenge; an x402 facilitator that supports Base verifies and settles each payment. Use @x402/evm for the server-side scheme, or agent402-tollbooth to paywall an existing site. Then serve /.well-known/x402 and list it on /sell (free): the index crawler picks it up, and rows here are ordered by settled calls, then crawl health. Want a guaranteed crawl? Open a seed request.

{
  "scheme": "exact",
  "network": "eip155:8453",
  "amount": "1000",
  "asset": "<USDC token contract address>",
  "payTo": "<your wallet>"
}

amount is in the token's smallest unit (6 decimals: 1000 = $0.001); asset is the token's on-chain id. For a live accept on this chain: curl -i https://agent402.tools/api/hash?text=hi