{"uid":"cap_YJVRDqP7JUddoPDoe7Kfd","slug":"swedish-vat-number-checksum-validator-58398ba7","name":"Swedish VAT Number Checksum Validator","description":"Call when an agent needs whether a SE VAT checksum is valid. No registry lookup. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-vat-se first.","url":"https://agentshelf.syntexa.ch/v1/check-vat-se?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"data":{"description":"JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN."},"value":{"type":"string","examples":["0000000018"],"maxLength":20000,"minLength":1,"description":"Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar."},"schema":{"description":"JSON Schema document for schema-check SKUs. Omit it on string checks."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9wlMUvhMajUWy9K13Ptjp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates the checksum of a Swedish VAT number (SE format) without performing any live registry lookup.","exampleAgentPrompt":"Can you check whether SE556789123401 is a valid Swedish VAT number based on its checksum?","exampleUseCases":[{"title":"E-commerce supplier onboarding check","prompt":"We're onboarding a Swedish supplier and they gave us VAT number SE556012345601 — can you validate the checksum to make sure it's structurally correct before we add them to our system?"},{"title":"Invoice validation before payment","prompt":"Before I approve this invoice from a Swedish vendor, can you verify that their VAT number SE998877665501 actually passes the checksum test?"},{"title":"Bulk form submission preflight","prompt":"A user just entered SE123456789001 as their Swedish VAT number in our checkout form — can you quickly check if that checksum is valid so I can show them an error if it's wrong?"}],"resultDescription":"A response indicating whether the submitted Swedish VAT number passes the SE VAT checksum algorithm. Returns a validity boolean or equivalent signal; does not confirm registration with the Swedish tax authority — only structural/algorithmic correctness.","failureModes":["Empty or missing value field returns validation error","Input longer than 20000 characters rejected","Non-SE-prefixed strings may return invalid or error","Malformed JSON body returns 400-level error","Payment not included or insufficient USDC triggers 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need a fast, cheap, offline checksum validation of a Swedish VAT number and do not need live registry confirmation. Prefer the free sandbox endpoint POST /v1/sandbox/check-vat-se first for testing. Choose this over a full registry lookup API when latency and cost matter and structural validity is sufficient.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:23.029Z","isFirstParty":false,"canonicalSlug":"swedish-vat-number-checksum-validator-58398ba7"}