Agent402 is the open-source, self-hostable x402 + MCP server: pay-per-call web tools for AI agents, free via proof-of-work or paid in USDC on Base.
No. Nothing here has a signup. Payment — USDC or proof-of-work — is the only credential, charged per call.
Flat per-call prices, $0.001–$0.02, published in /api/pricing and quoted exactly in every HTTP 402 response. No subscriptions or tiers.
Yes. Most pure-CPU tools accept proof-of-work — a sub-second sha256 puzzle solved by your own CPU — and the hosted MCP connector runs that same set for free (rate-limited).
An open HTTP payment standard built on the 402 Payment Required status code, for machine-to-machine pay-per-call payments in stablecoins, with settlement infrastructure from Coinbase.
USDC on Base mainnet (eip155:8453). The buyer needs only USDC — gas is sponsored by the facilitator.
No. There is no LLM anywhere in the serving path — every tool is deterministic code. Proof-of-work spends your CPU; x402 spends USDC.
Tool inputs are processed in memory and not persisted — except the memory tools, whose purpose is storage (wallet-keyed, owner-deletable, with optional TTL). Full policy: /privacy.
It is fully open source; CI re-tests every endpoint against its own documented example before each deploy; and revenue settles on-chain to agent402.base.eth (the named public receiving wallet), auditable by anyone on Basescan.
x402 settles before the handler runs, so the operating principle is that anything which can't be served reliably is removed from the catalog rather than left to charge-and-fail. Failure rates are watched by CI and a 15-minute production heartbeat.
Yes — it is open source under the MIT license. Clone the repo and run it yourself for free, with or without payments enabled. It also ships agent402-tollbooth, an open-source pay-per-crawl gate for charging AI crawlers on your own site.
Mikey Petrillo, a named maintainer — which most x402 sellers (anonymous wallets) do not offer.