{"uid":"cap_DewYeRc_XVfszNIlsvSzj","slug":"polish-regon-number-validator-8078b225","name":"Polish REGON Number Validator","description":"Format and checksum validation for IBAN, EU VAT, Polish NIP/REGON/PESEL and email, pay-per-call via x402. Only $0.001 (0.1 cent) per check, paid via x402 in USDC on Base.","url":"https://validate.crewofthecaptain.com/api/validate/pl-regon?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"value":{"type":"string","maxLength":512}}},"responseSchema":{"type":"json","example":{"type":"pl-regon","valid":true,"reason":"ok","normalized":"…"}},"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_OSceC79ubp157XVt5-1GR","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 the format and checksum of a Polish REGON business registration number via pay-per-call API","exampleAgentPrompt":"Can you check if this Polish REGON number is valid: 123456785?","exampleUseCases":[{"title":"Supplier onboarding REGON verification","prompt":"We're onboarding a new Polish supplier and they gave us REGON 591860040 — can you verify it's a valid REGON number before we add them to our system?"},{"title":"E-commerce checkout business ID check","prompt":"A business customer entered REGON 000331501 at checkout — validate it for me so we know it's properly formatted before we issue their B2B invoice."},{"title":"CRM data quality cleanup","prompt":"I have a list of REGON numbers in our CRM and want to flag any that fail checksum validation — start by checking this one: 890165760."}],"resultDescription":"A JSON object containing: 'type' (pl-regon), 'valid' (boolean indicating whether the REGON passes format and checksum checks), 'reason' (a short explanation such as 'ok' or a description of why it failed), and 'normalized' (the cleaned/normalized form of the REGON number).","failureModes":["Input value is empty or missing — likely returns valid:false with a descriptive reason","REGON fails checksum verification — returns valid:false with reason explaining the error","Value contains non-numeric characters or wrong length (REGON must be 9 or 14 digits) — returns valid:false","Payment not completed via x402 — returns HTTP 402 Payment Required before processing","Malformed request body — may return HTTP 400"],"whenToPreferThis":"Use this endpoint when you specifically need to validate a Polish REGON business registration number with checksum verification, not just format matching. It is especially suitable for pay-per-call, low-volume or on-demand validation scenarios where you don't want a subscription. Prefer this over manual regex checks when checksum correctness matters (e.g., onboarding suppliers, processing invoices, or cleaning CRM data).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:38:17.295Z","isFirstParty":false,"canonicalSlug":"polish-regon-number-validator-8078b225"}