{"uid":"cap_FIt5WLRR44UWxyWpZfsJ5","slug":"slovak-vat-number-checksum-validator-1a364a76","name":"Slovak VAT Number Checksum Validator","description":"Call when an agent needs whether a SK VAT checksum is valid. No registry lookup. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/check-vat-sk first.","url":"https://agentshelf.syntexa.ch/v1/check-vat-sk?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":["0000000011"],"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":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_J-VXm4z5SBXRmSiadvhIg","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a Slovak (SK) VAT number passes the checksum algorithm, without performing any live registry lookup.","exampleAgentPrompt":"Can you check whether the Slovak VAT number SK2020123456 passes the checksum — just the format validation, not a live registry check?","exampleUseCases":[{"title":"E-commerce checkout VAT validation","prompt":"Before we process this order, can you verify that the Slovak VAT number SK2121318949 the customer entered is mathematically valid?"},{"title":"Bulk supplier onboarding check","prompt":"We just received a new supplier registration with VAT ID SK4030000007 — can you run a checksum check on it to see if it's a valid SK VAT number before we add them to our system?"},{"title":"Invoice processing compliance gate","prompt":"I have an invoice from a Slovak company listing VAT number SK2022123456 — can you confirm whether that number passes the Slovak VAT checksum so I know if it's legitimate?"}],"resultDescription":"Returns a boolean or structured response indicating whether the submitted Slovak VAT number string passes the SK VAT checksum algorithm. No external registry or government database is contacted — this is a pure algorithmic check.","failureModes":["Empty or missing value string returns a validation error","Value exceeds 20000 character limit and is rejected","Malformed input (non-string) causes schema error","Network timeout or service unavailability returns a 5xx error","Invalid x402 payment causes 402 Payment Required response"],"whenToPreferThis":"Use this endpoint when you need to quickly verify the mathematical correctness of a Slovak VAT number (checksum only) without incurring the latency or cost of a live government registry lookup. Prefer the free unpaid POST /v1/sandbox/check-vat-sk endpoint first for testing or cost-sensitive scenarios. Choose this over generic regex validators when you need algorithmic checksum verification specific to Slovakia's VAT format.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:48:58.312Z","isFirstParty":false,"canonicalSlug":"slovak-vat-number-checksum-validator-1a364a76"}