{"uid":"cap_oiCd-JL13QbhKNNP0nccy","slug":"doormat-capital-x402lint-deep-lint-api-90fb71c2","name":"Doormat Capital x402lint Deep Lint API","description":"x402 endpoint conformance checker. Free /lint works standalone; /deep-lint adds manifest cross-check and on-chain asset verification, paid in USDC on Base (x402). Pay by sending USDC to the address in the 402 challenge, then retry with header X-PAYMENT-TX: <tx hash>. Introductory pricing through 17 Oct 2026 on /deep-lint (0.03 USDC normally) — see the 402 response for the current amount.","url":"https://x402lint.sebastiaan-ba3.workers.dev/deep-lint?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"properties":{"input":{"properties":{"queryParams":{"url":"https://example.com/paid-endpoint"}}},"output":{"properties":{"example":{"ok":true,"score":90,"findings":[]}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_UFcm1H0x_sbDfg1Uii8bE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs deep conformance checking of an x402-compliant endpoint, including manifest cross-check and on-chain asset verification, paid in USDC on Base via x402.","exampleAgentPrompt":"Run a deep conformance check on my x402 endpoint at https://mypaidapi.example.com/resource — I want the full audit including manifest cross-check and on-chain asset verification, not just the basic lint.","exampleUseCases":[{"title":"Pre-launch x402 API compliance audit","prompt":"Before I go live, can you run a deep lint on my x402 payment endpoint at https://api.myapp.com/premium-data and tell me the conformance score and any findings I need to fix?"},{"title":"Debugging failed x402 payment flow","prompt":"My x402 endpoint at https://payments.myservice.io/gated-content is rejecting payments even though the setup looks right — can you do a deep lint including the manifest and on-chain check to find what's wrong?"},{"title":"Third-party x402 integration verification","prompt":"I'm integrating with a vendor's x402 API at https://vendor.example.com/paid-endpoint — can you deep lint it to verify it actually conforms to the spec and the on-chain assets check out before I build against it?"}],"resultDescription":"Returns a JSON object with an 'ok' boolean indicating overall conformance, a numeric score (0-100), and a 'findings' array listing specific conformance issues or violations discovered during the deep lint, manifest cross-check, and on-chain asset verification.","failureModes":["Missing or invalid X-PAYMENT-TX header returns 402 with payment challenge","Unreachable target URL returns an error finding","Malformed URL input causes validation failure","On-chain asset verification failure if Base network is unreachable","Target endpoint not implementing x402 at all results in low score and multiple findings","Payment transaction hash not yet confirmed on-chain causes verification to fail"],"whenToPreferThis":"Use this endpoint when you need a comprehensive x402 conformance audit that goes beyond basic syntax checking — specifically when you need manifest cross-validation and on-chain asset verification on Base. Prefer the free /lint endpoint for quick syntactic checks; use /deep-lint when preparing for production deployment or debugging complex x402 integration issues where on-chain state matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T06:31:54.909Z","isFirstParty":false,"canonicalSlug":"doormat-capital-x402lint-deep-lint-api-90fb71c2"}