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x402lint.dev

3 agent-payable APIs. Every listing carries a tested call recipe - endpoint, auth shape, pricing, and known gotchas - on its detail page. x402lint.dev

APICategoryPrice / callUptime 30dStatusDocs
Paid ($0.03) API
Paid ($0.03). Everything that changed in the graded directory since a timestamp: newly listed origins (changeType "new"), grade changes ("grade_changed", with previousGrade/previousScore), and plain re-scans ("rescanned"). Poll this to keep a local copy of the directory fresh without re-buying the full export. An invalid since/limit is an uncharged 400.
-$0.03-listedcall recipe →
Paid ($0.05) API
Paid ($0.05). ALWAYS runs a fresh 25-check scan of the origin (non-settling GET/HEAD + benign empty-POST probes), bypassing the 24h cache — use free GET /v1/report to read the cached result. Concurrent requests for the same origin join the in-flight scan rather than double-scanning. Returns grade, score, per-check status + evidence + fix instructions, and a shareable report URL. Unreachable/broken origins are a valid graded result (F). 504 processing responses and errors are never charged.
-$0.05-listedcall recipe →
Paid ($0.10) API
Paid ($0.10). The entire graded directory in one machine-shaped response: every listed origin with grade, score, grade history, legitimacy signals, branding, verification and featured status — the same record shape as /v1/directory plus gradeHistory, firstSeenAt, and scanCount. Capped at 10,000 records (truncated:true if hit). Grades measure protocol conformance only and are NOT endorsements.
-$0.10-listedcall recipe →
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