Find a tool, pay the 402, get JSON.
Resolve any task in one free call, then pay per request in USDC on Base + 11 more chains, or USDG on Robinhood Chain, or over MPP, natively on Tempo. Connect over MCP or plain HTTP; machines read llms.txt, openapi.json and .well-known/x402.
The pure-CPU tools are free: your machine solves a short proof-of-work (about 65,536 sha256 hashes on average, a fraction of a second of CPU on a laptop) instead of paying. Try them in the playground.
A cited report, by card.
Built from live data, with a PDF and data tables, and refunded if it fails. A monitor re-runs it when something moves.
Why pay here.
A failed x402 call is not charged.
An error cancels settlement; a Tempo payment sent first is recorded as a refund owed.
how it settles →One wallet pays for all of it.
500+ tools, model tiers, media and reports, each paid per call from the same wallet.
what it covers →Pay on 13 chains or over MPP.
Every settled x402 call returns a receipt naming its chain transaction, or its batch transfer id.
receipts →Sell to agents.
List an x402 API and the router can send agents your way; it pays you on Base, Algorand, Solana, Tempo. Or put agent402-tollbooth in front of a site to charge AI crawlers per page. Sellers rank by settled volume on the leaderboard.
Questions.
What is agentic finance?
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Agentic finance (AIFI for short) is software agents paying and getting paid on their own: finding a service, paying per request from their own wallet over open protocols such as x402 and MPP, and keeping the receipt. Agent402 is its applied layer: the tools agents buy, the index and router that find a seller, and the tollbooth that lets a site charge agents. Full explainer at /agentic-finance.
How does an agent call a model?
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POST /v1/metered/chat/completions with a model and your messages, no API key and no account (the Anthropic Messages and OpenAI Responses wires have metered routes too). The 402 quotes this exact request from its own body (the input estimated from its tokens with headroom, plus your max_tokens, at the model's list price plus a fee). On x402, Tempo and credits, settlement never exceeds that quote: an exact payer pays the quote, and an upto payer (where the 402 offers it) or a credits key settles what the answer used; a card payment adds the processor fee. Model-backed: third-party models answer. Flat tiers stay as the predictable-price option: one price per call whatever the length, $0.003 to $0.50 (/v1/nano, /v1, /v1/pro, /v1/premium; GET /v1/models lists every model with its tier).
Do I need a wallet to try it?
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No. The pure-CPU tools are payable in compute: your own machine solves a single-use, slug-scoped sha256 proof-of-work instead of paying, which costs about 65,536 sha256 hashes on average, a fraction of a second of CPU on a laptop. A wallet only matters for tools that cost real money to run, and those quote their price in the 402 challenge before anything is charged.
Is it open source, and can I run my own?
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Yes. The server is AGPL-3.0 and self-hostable; the client SDK, MCP connector and tollbooth packages are MIT. Clone it and run FREE_MODE=true npm start to serve the catalog as an HTTP API plus MCP with no payments; a tool that calls a third-party API answers 503 until you set that provider's key.
More on /faq, and what agentic finance means on /agentic-finance.