{"uid":"cap_dP2uGbnlr2Yq_DrQ3UoKS","slug":"47620-utilities-api-sha-256-fingerprint-90166f3e","name":"47620 Utilities API – SHA-256 Fingerprint","description":"Compute a SHA-256 fingerprint of any string: full hex digest, colon-separated (like SSH fingerprints), a short 16-char id, and base64. Deterministic, CPU-only. Pass ?text=<content>.","url":"https://47620.xyz/x/util/fingerprint?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"fields":{"type":"string","description":"Optional comma-separated top-level response keys to keep (e.g. \"health,slot,solUsd\"). Omit for the full payload."}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type","example"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["ok","endpoint"],"properties":{"ok":{"type":"boolean"},"endpoint":{"type":"string"}},"additionalProperties":true}},"additionalProperties":false}}},"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_9tsHzY0GxI1D55Qg028yj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a SHA-256 fingerprint of any input string, returning the full hex digest, colon-separated SSH-style fingerprint, a 16-char short ID, and base64 encoding.","exampleAgentPrompt":"Can you compute the SHA-256 fingerprint of the string 'hello world' and give me the full hex digest, the colon-separated SSH-style version, the 16-char short ID, and the base64 encoding?","exampleUseCases":[{"title":"Deduplication key for content pipeline","prompt":"Generate a SHA-256 fingerprint for this article text so I can use it as a deduplication key — give me the short 16-char ID and the full hex digest: 'The quick brown fox jumps over the lazy dog.'"},{"title":"SSH-style fingerprint for an API key","prompt":"Take this API key string 'sk-abc123xyz789' and give me its SHA-256 fingerprint in colon-separated SSH format so I can log it safely without storing the raw key."},{"title":"Base64 hash for a data integrity check","prompt":"Compute the SHA-256 hash of the string 'user:alice@example.com:2024-06-01' and return it as base64 so I can embed it in a webhook signature header."}],"resultDescription":"Returns a JSON object containing the SHA-256 hash of the input string in four formats: full lowercase hex digest, colon-separated pairs (SSH fingerprint style), a 16-character short identifier, and standard base64 encoding. The computation is deterministic and CPU-only with no external dependencies.","failureModes":["Missing or empty `text` query parameter — may return an error or hash of empty string","Input string too large — may trigger payload size limits","Network timeout on slow connections despite fast CPU computation","Payment failure via x402 protocol preventing endpoint access"],"whenToPreferThis":"Choose this endpoint when you need SHA-256 fingerprints in multiple output formats simultaneously (hex, colon-separated, short ID, base64) from a single API call, without needing to implement hashing locally. Particularly useful in agentic workflows where you need deterministic, reproducible content identifiers, deduplication keys, or SSH-style fingerprints without deploying compute infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T00:46:51.596Z","isFirstParty":false,"canonicalSlug":"47620-utilities-api-sha-256-fingerprint-90166f3e"}