{"uid":"cap_3WIvSHtH_8DqKGk9-caQG","slug":"uuid-v5-generator-name-based-sha-1-9e2366ce","name":"UUID v5 Generator (Name-Based, SHA-1)","description":"Generate a deterministic name-based UUID (version 5, SHA-1) from a namespace + name — the same inputs always yield the same UUID, for stable IDs without a database. Namespace may be a UUID or an alias: dns | url | oid | x500.","url":"https://agent402.tools/api/uuid-v5","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"name":{"type":"string","description":"the name to hash within the namespace"},"namespace":{"type":"string","description":"a UUID, or alias: dns | url | oid | x500"}}},"responseSchema":{"type":"json","example":{"uuid":"0e3f2f0e-... (deterministic)","version":5}},"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_LJfBSIUIM7YJcqaq-OZ0W","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":"Generates a deterministic UUID version 5 by hashing a namespace and name using SHA-1, ensuring the same inputs always produce the same UUID.","exampleAgentPrompt":"Generate a UUID v5 for the name 'user-profile-42' using the URL namespace — I need the same UUID every time I pass that exact name.","exampleUseCases":null,"resultDescription":"A UUID version 5 string (e.g. '6ba7b811-9dad-11d1-80b4-00c04fd430c8') deterministically derived from the provided namespace and name using SHA-1 hashing. The same namespace+name pair will always return the identical UUID.","failureModes":["Invalid namespace value (not a valid UUID and not one of dns/url/oid/x500) returns an error","Missing 'name' or 'namespace' field returns a 400 bad request","Malformed JSON body causes parse error","Payment failure (x402) prevents call from completing"],"whenToPreferThis":"Use this endpoint when you need a stable, reproducible identifier for a string without storing anything in a database — ideal for deduplication, consistent record IDs, or generating UUIDs deterministically across distributed systems. Prefer this over UUID v4 when repeatability matters, and over UUID v1/v3 when you want SHA-1-based hashing with standard namespace support.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:49:28.479Z","isFirstParty":false}