{"uid":"cap_6HM6sz90kMc_lUVSiJJbf","slug":"uuid-nil-validator-a29a7d59","name":"UUID Nil Validator","description":"Call when an agent needs whether a string is a valid uuid-nil. No network. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/id-uuid-nil first.","url":"https://agentshelf.syntexa.ch/v1/id-uuid-nil?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":["00000000-0000-0000-0000-000000000000"],"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":"0.009","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":"$0.009/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_20zerERD7bY_o-RrNOxNn","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.009","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a given string is a UUID nil (all-zeros UUID: 00000000-0000-0000-0000-000000000000)","exampleAgentPrompt":"Can you check if this string is a valid nil UUID: '00000000-0000-0000-0000-000000000000'?","exampleUseCases":[{"title":"Detecting unset UUID fields","prompt":"I have a record with UUID field '00000000-0000-0000-0000-000000000000' — can you tell me if that's a nil UUID, meaning the field was never actually set?"},{"title":"Validating UUID before database write","prompt":"Before I write this to the database, check if the UUID '00000000-0000-0000-0000-000000000001' is a nil UUID or a real one."},{"title":"Filtering nil UUIDs from a list","prompt":"I need to process this UUID from the API response: '00000000-0000-0000-0000-000000000000' — is it actually a nil UUID that I should skip?"}],"resultDescription":"Returns a boolean or validation result indicating whether the provided string matches the UUID nil format (all-zeros: 00000000-0000-0000-0000-000000000000), with no network calls required as the check is purely local string validation.","failureModes":["Empty or missing value field returns validation error","String exceeding 20000 characters rejected","Malformed request body returns error","Payment of exact $0.009 USDC required or request is rejected"],"whenToPreferThis":"Use this endpoint when you need to programmatically verify whether a UUID string is the nil/zero UUID (00000000-0000-0000-0000-000000000000) and do not want to implement the check yourself. Prefer the free sandbox endpoint (/v1/sandbox/id-uuid-nil) when available to avoid the $0.009 USDC cost. Choose this over general UUID validators when you specifically need nil UUID detection rather than version-specific UUID validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:11.744Z","isFirstParty":false,"canonicalSlug":"uuid-nil-validator-a29a7d59"}