{"uid":"cap_UwbUYBaxxWP2Sx-cRUDOq","slug":"lexrails-cfr-citation-validator-cc6bba2e","name":"LexRails CFR Citation Validator","description":"Validate a CFR citation structurally (title, part, section format).","url":"https://lex.chainverdict.xyz/v1/cfr/validate","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["title"],"properties":{"title":{"type":"string","description":"CFR title number (1-50)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.009","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":"$0.009/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_VPaFDlV8kxhd84QY-e-Uv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.009","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a given Code of Federal Regulations (CFR) title citation is real and correctly formed, returning a deterministic true/false verdict","exampleAgentPrompt":"Can you check whether '21 CFR Part 11' is a real, valid Code of Federal Regulations citation and not a hallucinated reference?","exampleUseCases":[{"title":"Hallucination audit in AI legal drafts","prompt":"I just had an AI draft a regulatory compliance memo and it cites '45 CFR Part 164' — can you verify that's a real CFR citation and not something it made up?"},{"title":"Regulatory document pre-publication check","prompt":"Before we publish this policy brief, check that '40 CFR Part 60' is a legitimate Code of Federal Regulations title so we don't embarrass ourselves with a fake citation."},{"title":"Automated citation guardrail for legal agents","prompt":"My agent is writing regulatory summaries and I want to make sure every CFR reference it produces is real — can you validate '29 CFR Part 1926' for me?"}],"resultDescription":"A JSON object containing a 'valid' boolean indicating whether the provided CFR title citation is legitimate, plus an '_attestation' object providing a cryptographic or metadata proof of the check result for auditability.","failureModes":["Missing required 'title' parameter returns an error response","Ambiguous or malformed citation string may return valid:false even for real regulations","Payment failure via x402 results in 402 response and no validation result","Network timeout or service unavailability returns no result","Non-CFR legal citation formats (e.g. U.S.C. sections) may not be supported"],"whenToPreferThis":"Choose this endpoint when you need a deterministic, paid-attestation check specifically for Code of Federal Regulations (CFR) citations — particularly in AI agent pipelines prone to hallucinating regulatory references. Prefer it over general web searches when you need a machine-verifiable boolean result with an attestation object suitable for audit trails, or when building automated guardrails that must flag fabricated CFR citations before they reach a human or published document.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:39:14.682Z","isFirstParty":false}