{"uid":"cap_F5gur8b4DyiDpgBbCKQ1k","slug":"eu-agent-utils-siret-number-validation-44b92b8d","name":"EU Agent Utils – SIRET Number Validation","description":"Cheap, deterministic utilities for AI agents, paid per call in USDC with x402 (no account, no API key): ECB euro reference FX rates and conversion, IANA time-zone conversion with explicit DST handling, European public holidays and working-day calculator (FR incl. Alsace-Moselle, BE, LU, DE, AT, IT, ES, PT), offline IBAN validation, and SIREN/SIRET and EU VAT number check-digit validation. Errors are never charged.","url":"https://eu-agent-utils.frcompanycheck.workers.dev/v1/fr/siret/%7Bnumber%7D?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"nic":"00074","type":"SIRET","siren":"732829320","valid":true,"errors":[],"number":"73282932000074","fr_vat_number":"FR44732829320"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_e37ISlcvxrywLzxloApEo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a French SIRET number offline, checking the Luhn check-digit and returning the decomposed SIREN, NIC, and derived FR VAT number.","exampleAgentPrompt":"Can you check whether this SIRET number 73282932000074 is valid, and tell me the corresponding SIREN and French VAT number?","exampleUseCases":[{"title":"Supplier onboarding identity check","prompt":"Before we add this new French supplier to our system, can you validate their SIRET 73282932000074 and confirm the SIREN and FR VAT number we should record?"},{"title":"Invoice compliance verification","prompt":"I received an invoice from a French company with SIRET 35219552800022 — can you tell me if that SIRET is valid and what VAT number it maps to?"},{"title":"KYB due-diligence automation","prompt":"As part of our Know Your Business checks, please validate the SIRET 41816609800069 for this French entity and flag any errors in the number."}],"resultDescription":"A JSON object containing: whether the SIRET is valid (boolean), the 9-digit SIREN, the 5-digit NIC establishment suffix, the full normalised 14-digit number, the derived French VAT number (FR + 2-digit key + SIREN), and an array of error messages if validation fails. Errors are never billed.","failureModes":["Invalid or malformed SIRET (wrong length, non-numeric characters) returns valid=false with error messages and is not charged","SIRET fails Luhn check-digit test: returns valid=false with errors","Network timeout on the Cloudflare Worker edge: standard HTTP 5xx","x402 payment not completed: HTTP 402 response, no data returned"],"whenToPreferThis":"Choose this endpoint when you need a fast, offline, purely algorithmic SIRET check-digit and format validation without hitting INSEE or any French government database. It is ideal for pre-screening user input, supplier onboarding pipelines, or invoice processing where real-time registry lookups are not required. At $0.001 USDC per call with no account or API key needed via x402, it suits high-volume or serverless agent workflows. Prefer a live INSEE SIRENE API call if you also need legal status, address, or activity code.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:30:05.414Z","isFirstParty":false,"canonicalSlug":"eu-agent-utils-siret-number-validation-44b92b8d"}