{"uid":"cap_HxvdZsxDbDIahcfmFOjuM","slug":"toll402-danish-cvr-number-validator-085829cd","name":"Toll402 Danish CVR Number Validator","description":"Offline validator for a Danish CVR-nummer (8-digit business registration number issued by the Danish Business Authority). Normalizes input to digits only, checks length and computes a modulus-11 checksum using weights 2,7,6,5,4,3,2 on the first 7 digits compared against the 8th check digit. Result is flagged as best-effort since some legacy CVR numbers do not conform to the checksum rule.","url":"https://toll402.dev/v1/t/cvr_dk_validate","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["cvr"],"properties":{"cvr":{"type":"string","description":"CVR number, 8 digits, optional spaces"}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_iDkHfjhfn23CCM0bGKw_V","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 Danish CVR-nummer (8-digit business registration number) by normalizing input, checking length, and verifying the modulus-11 checksum offline","exampleAgentPrompt":"Can you check if the Danish CVR number 12345678 is valid — verify its format and modulus-11 checksum?","exampleUseCases":[{"title":"Supplier onboarding CVR check","prompt":"Before we add this Danish supplier to our system, can you validate their CVR number 34567890 to make sure it's properly formatted and passes the checksum?"},{"title":"E-commerce checkout business verification","prompt":"A customer entered 87654321 as their Danish CVR number at checkout — is that a valid CVR-nummer?"},{"title":"Bulk data cleansing pre-check","prompt":"We have a Danish company in our database with CVR number 10203040 — can you validate whether that number is correctly formed and passes the modulus-11 check?"}],"resultDescription":"Returns a validation result indicating whether the CVR number passes format and modulus-11 checksum checks, with a best-effort flag noting that some legacy CVR numbers may not conform to the checksum rule even if legitimate","failureModes":["Input CVR is not 8 digits after normalization — validation fails with length error","CVR checksum does not match — flagged as invalid but best-effort note applies for legacy numbers","Non-numeric characters that can't be normalized cause a parsing error","Empty or missing CVR field returns a required field error"],"whenToPreferThis":"Use this endpoint when you need a fast, offline, zero-latency check of a Danish CVR-nummer's structural validity without calling the Danish Business Authority's live registry. Ideal for pre-validation before submitting to official APIs, bulk data cleansing, or form validation where real-time registry lookup is unnecessary or too costly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:54:01.832Z","isFirstParty":false}