{"uid":"cap_wAn8UWwt9sxWxoqQgfDg3","slug":"lexrails-ecli-legal-citation-validator-2ba87bbc","name":"LexRails ECLI Legal Citation Validator","description":"Validate a European ECLI identifier (format, jurisdiction, year).","url":"https://lex.chainverdict.xyz/v1/ecli/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":["id"],"properties":{"id":{"type":"string","description":"European Case Law Identifier"}}}},"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_Z_jyzTheNdm3zzlEgq7qL","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":"Deterministically validates whether a given ECLI (European Case Law Identifier) legal citation is real and not fabricated","exampleAgentPrompt":"Can you check whether the legal citation ECLI:EU:C:2021:123 is a real, verified case or if it was made up?","exampleUseCases":[{"title":"AI legal brief hallucination check","prompt":"I just drafted a legal brief with an AI and it cited ECLI:NL:HR:2019:1290 — can you verify that's a real case and not fabricated?"},{"title":"Research assistant citation audit","prompt":"Before I submit this research paper, can you confirm that ECLI:EU:C:2018:385 is a legitimate European court case citation?"},{"title":"Automated contract review pipeline","prompt":"We're running an automated contract analysis tool and it generated ECLI:DE:BVerfG:2020:456 as a reference — please validate whether this citation actually exists."}],"resultDescription":"Returns a JSON object with a 'valid' boolean indicating whether the ECLI citation is real and verified, plus an '_attestation' object providing cryptographic or deterministic proof of the check result.","failureModes":["Missing or malformed 'id' parameter returns an error","Invalid ECLI format string may return valid:false or a parsing error","Payment failure via x402 protocol blocks the call","Unknown or unsupported jurisdiction prefix may not be resolvable","Network timeout or upstream legal database unavailability"],"whenToPreferThis":"Choose this endpoint when you need deterministic, paid-attestation verification of ECLI legal citations — especially to catch AI-hallucinated case references before they appear in legal documents, research papers, or automated legal workflows. Prefer this over general web search when you need a structured boolean validity signal with an attestation, not just a search result.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:33:30.150Z","isFirstParty":false}