preflight402.com publishes 8 machine-payable endpoints over the x402 protocol, priced from $0.05 to $0.1 per call. Each was probed directly; the response code below is what it returned.
| Endpoint | Method | Price | Probe |
|---|---|---|---|
| /v1/ai-act/obligations | POST | $0.1 | 402 |
| /v1/btc/tx-context | POST | $0.1 | 402 |
| /v1/btc/tx-inspect | POST | $0.1 | 402 |
| /v1/cve/check | POST | $0.05 | 402 |
| /v1/deps/check | POST | $0.05 | 402 |
| /v1/deps/version-check | POST | $0.05 | 402 |
| /v1/evm/tx-inspect | POST | $0.1 | 402 |
| /v1/legal/cite-check | POST | $0.1 | 402 |
Call when you need to know which articles of the EU AI Act mention a given obligation for a given role (provider, deployer, importer, distributor, authorised representative). Returns the matching arti…
Call before signing a Bitcoin transaction when you need chain context for its inputs: whether each prevout exists, whether it is already spent, its value in sats and its confirmations. Resolves up to …
Call before signing or broadcasting a Bitcoin transaction. Decodes a raw transaction hex or a PSBT and returns inputs, outputs, script types, addresses, vsize, fee rate when derivable, and objective s…
Call before acting on CVE identifiers produced by a model. Returns whether each CVE record exists and its state (published or rejected), with severity and the official CVE record link. Catches fabrica…
Call before installing packages suggested by a language model. Returns, for each npm or PyPI package name, whether it actually exists in the registry, whether it is deprecated or yanked, and — when th…
Call before pinning or installing a specific package version in npm, PyPI or crates.io. Returns whether that exact version exists in the official registry, its publication timestamp, whether it is dep…
Call before signing an Ethereum or Base transaction or calldata. Decodes raw transaction bytes or contract calldata against standard interfaces (ERC-20, ERC-721, ERC-1155, WETH, EIP-2612 Permit and Pe…
Call before publishing a claim that cites EU law. Checks that the cited instrument exists in our pinned corpus, that the cited article exists within it, and whether your quoted text actually appears i…