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Preflight

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 fabricated advisory references. Does not tell you whether to patch.

Visit preflight402.com

Hostpreflight402.com
Price$0.05–$0.10 per call
NetworkBase
Paid endpoints listed8
Calls, last 30 days*11
Most unique payers on one endpoint (30 days)*2
Last paid call*2026-10-08
Tagssecurity, crypto, legal, compliance, eu-law, ai-act, dependencies, npm

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URLMethodPrice
https://preflight402.com/v1/cve/check
Call before acting on CVE identifiers produced by a model. Returns whether each CVE record exists and its state…		POST$0.05
https://preflight402.com/v1/evm/tx-inspect
Call before signing an Ethereum or Base transaction or calldata. Decodes raw transaction bytes or contract calldata…		POST$0.10
https://preflight402.com/v1/legal/cite-check
Call before publishing a claim that cites EU law. Checks that the cited instrument exists in our pinned corpus, that…		POST$0.10
https://preflight402.com/v1/deps/check
Call before installing packages suggested by a language model. Returns, for each npm or PyPI package name, whether it…		POST$0.05
https://preflight402.com/v1/deps/version-check
Call before pinning or installing a specific package version in npm, PyPI or crates.io. Returns whether that exact…		POST$0.05
https://preflight402.com/v1/ai-act/obligations
Call when you need to know which articles of the EU AI Act mention a given obligation for a given role (provider,…		POST$0.10
https://preflight402.com/v1/btc/tx-context
Call before signing a Bitcoin transaction when you need chain context for its inputs: whether each prevout exists,…		POST$0.10
https://preflight402.com/v1/btc/tx-inspect
Call before signing or broadcasting a Bitcoin transaction. Decodes a raw transaction hex or a PSBT and returns inputs,…		POST$0.10

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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