{"uid":"cap_dPdGjEosqkhFZA_mcb_21","slug":"greeneris-siret-siren-validator-5dc9fb8c","name":"Greeneris SIRET/SIREN Validator","description":"Instant pre-validation of French company numbers before invoicing or costly Sirene API calls. Auto-detects SIREN (9 digits) vs SIRET (14 digits), applies the INSEE Luhn rule and the documented La Poste exception (356000000*: digit sum mod 5). Query: ?number=44306184100047 (spaces/dots/dashes tolerated). Returns valid, type, siren, nic and the rule applied. Pure offline computation, 1y cache.","url":"https://data.greeneris.io/v1/fr/siret-check","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["number"],"properties":{"number":{"type":"string","description":"SIREN (9 digits) or SIRET (14 digits); separators allowed"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"nic":"00047","rule":"luhn","type":"siret","siren":"443061841","valid":true,"number":"44306184100047","source":"offline INSEE formation rule: Luhn checksum + La Poste exception (no registry lookup)"}},"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_DjzNQOIyq5Z-Awnp8iGYS","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":"Offline Luhn-based validation of French company numbers (SIREN or SIRET) with La Poste exception support, returning validity, type, and parsed components","exampleAgentPrompt":"Before I generate this invoice, can you check whether the French company number 44306184100047 is a valid SIRET — and tell me which rule it passed?","exampleUseCases":null,"resultDescription":"Returns a JSON object with: `valid` (boolean), `type` (SIREN or SIRET), `siren` (first 9 digits), `nic` (last 5 digits for SIRET), and `rule` (standard Luhn or La Poste exception). Pure offline computation, no external API call, cached for 1 year.","failureModes":["Number parameter missing — returns 400 bad request","Input is not 9 or 14 digits after stripping separators — returns invalid with type unknown","Number fails both standard Luhn and La Poste exception — returns valid: false","Non-numeric characters beyond allowed separators (spaces, dots, dashes) — likely returns 400 or invalid","Payment not completed (x402 protocol) — returns 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need instant, offline pre-validation of French SIREN or SIRET numbers before invoicing, before querying the official Sirene API (which is slower and rate-limited), or before executing a payment. It handles both 9-digit SIREN and 14-digit SIRET formats, applies the standard INSEE Luhn rule and the documented La Poste exception (356000000*), tolerates formatting separators, and costs only $0.001 per call with a 1-year cache. Prefer it over the live Sirene registry search when you only need format/checksum validity, not company metadata.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:05:58.416Z","isFirstParty":false}