{"uid":"cap_GHaRKN9M6SXMYJShMAt2U","slug":"code402-cnpj-check-71aae181","name":"code402 CNPJ Check","description":"Offline deterministic checks (no ML, no scraping) for business identifiers and rental due-diligence, paid per call via x402 (gasless EIP-3009 USDC on Base). Checksum-verifiable (IBAN, LEI, VAT, ABA, ISBN, SEDOL…) vs format-only (EIN, IFSC, SWIFT/BIC…) — every response returns a scope field. Non-custodial, signed receipts. First 3 calls/day free.","url":"https://hcrb.in/v1/tools/cnpj-check/call?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"input":{"type":"object","required":["cnpj"],"properties":{"cnpj":{"type":"string","description":"14-digit Brazilian CNPJ; punctuation allowed (e.g. 00.000.000/0001-91)."}}}}},"responseSchema":{"type":"json","schema":{"type":"object","required":["valid","reason"],"properties":{"tool":{"type":"string"},"scope":{"type":"string"},"valid":{"type":"boolean"},"reason":{"type":"string"},"country":{"type":"string"},"normalized":{"type":"string"}}},"example":{"valid":true,"reason":"checksum valid"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_UChYQyeROOOREDqrr6d4S","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a Brazilian CNPJ (Cadastro Nacional da Pessoa Jurídica) business identifier using offline deterministic checksum verification, paid per call via x402 micropayments.","exampleAgentPrompt":"Can you verify that this Brazilian company registration number is valid — CNPJ 11.222.333/0001-81 — and tell me if it passes the checksum?","exampleUseCases":[{"title":"KYB check before onboarding Brazilian supplier","prompt":"Before we onboard this new supplier from Brazil, can you confirm their CNPJ 45.543.915/0001-02 is valid and correctly formatted?"},{"title":"E-commerce checkout CNPJ validation","prompt":"A customer entered CNPJ 12.345.678/0001-95 at checkout — can you check whether that's a legitimate Brazilian business ID before we process the order?"},{"title":"Rental due diligence on Brazilian tenant","prompt":"I'm reviewing a rental application from a Brazilian company that gave CNPJ 07.526.557/0001-00 — can you validate whether this business identifier is real and passes checksum?"}],"resultDescription":"Returns a JSON object with a boolean 'valid' field, a 'reason' string explaining the outcome (e.g. 'checksum valid' or the specific failure), a 'scope' field indicating whether verification was checksum-level or format-only, a 'normalized' string with the standardized CNPJ format, and a 'country' field. Also echoes the 'tool' name used.","failureModes":["Invalid or malformed CNPJ input returns valid:false with a descriptive reason","Network or payment failure if x402 USDC transaction cannot be processed","Rate limit exceeded beyond 3 free daily calls without payment","Ambiguous input (letters, wrong length) may return format error in reason field"],"whenToPreferThis":"Use this endpoint when you need a fast, offline, deterministic validation of a Brazilian CNPJ number with checksum verification — not just format checking. Ideal for KYB (Know Your Business) pipelines, supplier onboarding, rental due diligence, or any workflow where you need a cheap ($0.005), auditable, non-ML confirmation that a Brazilian business ID is structurally and mathematically valid. Prefer over scraping Brazilian government registries when offline verification suffices.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:39:54.066Z","isFirstParty":false,"canonicalSlug":"code402-cnpj-check-71aae181"}