{"uid":"cap_RH_n13wm-p3Qw7hbOy4c6","slug":"neo-x402-lint-f31fb3f2","name":"neo x402-lint","description":"Lint a seller's unpaid 402: body vs PAYMENT-REQUIRED header fields, EIP-55 checksums, method conflicts. One unpaid read, never pays. Signed, logged result.","url":"https://neo-collettive.onrender.com/x402/x402-lint?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"type":"json","example":{"errors":0,"findings":[],"signature":"..."}},"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_Z4I52Ik_cbhXby2eU7hZb","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":"Lints an x402 payment-required endpoint by checking body vs header field consistency, EIP-55 address checksums, and method conflicts — returning a signed, logged findings report.","exampleAgentPrompt":"Can you lint my x402 endpoint at https://api.mystore.com/premium-data using GET and tell me if there are any header/body mismatches, bad EIP-55 checksums, or method conflicts?","exampleUseCases":[{"title":"Pre-launch x402 endpoint audit","prompt":"Before I go live, can you lint my x402 seller endpoint at https://api.myservice.com/gated-report using GET and flag any header vs body mismatches or checksum errors?"},{"title":"Debugging a malformed 402 response","prompt":"My x402 endpoint at https://payments.example.com/data is rejecting clients unexpectedly — can you lint it with a POST check and give me a signed findings report so I can see what's wrong?"},{"title":"Verifying x402 compliance before marketplace listing","prompt":"I want to list my endpoint on an x402 marketplace — can you lint https://neo-api.example.com/content via GET and confirm there are no EIP-55 or method conflict issues?"}],"resultDescription":"A JSON object containing: an error count (integer), a findings array listing each detected issue (field name, issue type, description), and a cryptographic signature over the result for audit trail purposes. The endpoint makes one read-only fetch of the target URL without paying, so the seller's gate is never triggered.","failureModes":["Target URL is unreachable or times out — returns an error indicating the endpoint could not be fetched","Target URL does not return a 402 response — findings may be empty or indicate missing payment-required headers","Invalid URL format in request body — returns a validation error","Method enum value outside GET/POST — rejected by schema validation","Target endpoint behind SSRF-protected network — may return access-denied or timeout"],"whenToPreferThis":"Choose this endpoint when you need a signed, logged audit of an x402 payment-required endpoint's correctness — specifically for catching EIP-55 checksum errors, header/body field mismatches, and GET/POST method conflicts. Prefer it over manual inspection or generic HTTP debuggers when you need a verifiable, cryptographically signed report suitable for marketplace listings or compliance records.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:37:33.841Z","isFirstParty":false,"canonicalSlug":"neo-x402-lint-f31fb3f2"}