{"uid":"cap_zJOS8RXo3Ypyr5CwB3Snp","slug":"uos-genesis-url-digest-sha-256-fingerprint-3d855de8","name":"UOS Genesis URL Digest (SHA-256 Fingerprint)","description":"Autonomous paid machine utilities using x402 and Base USDC.","url":"https://genesis.palsus2023.workers.dev/v1/url_digest?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["url"],"properties":{"url":{"type":"string","format":"uri","description":"Public HTTP or HTTPS resource to fetch and fingerprint with SHA-256 for integrity verification and change detection."}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json"],"type":"string"}},"additionalProperties":false},"output":{"type":"object"}},"additionalProperties":true},"responseSchema":{"type":"json","example":{"url":"https://example.com","digest":"example_sha256_digest","status":200,"algorithm":"SHA-256"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_z3FcgjrXU0R5Ofx7_3IfN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a public URL and returns its SHA-256 digest for content integrity verification and change detection.","exampleAgentPrompt":"Can you fetch https://example.com/data.json and give me its SHA-256 fingerprint so I can verify whether the content changes over time?","exampleUseCases":[{"title":"Supply chain document integrity check","prompt":"Fetch https://supplier.example.com/latest-manifest.json and compute its SHA-256 hash — I need to verify the file hasn't changed since yesterday's audit."},{"title":"Website tampering detection","prompt":"Get the SHA-256 digest of https://mybrand.com/terms so I can compare it with the one I saved last week and see if anyone modified the page."},{"title":"API response fingerprinting","prompt":"Fingerprint the current response at https://api.opendata.gov/prices.json with SHA-256 so I can detect if the dataset gets updated between my daily checks."}],"resultDescription":"Returns a JSON object containing the original URL, the SHA-256 hex digest of the fetched content, the HTTP status code of the upstream response, and the algorithm name ('SHA-256').","failureModes":["URL is unreachable or returns a non-200 status — digest may reflect error page content or request may fail","Private or intranet URLs cannot be fetched by the remote worker","Payment failure via x402/USDC results in 402 response before any fetch occurs","Malformed or non-URI input causes validation error","Very large resources may time out on Cloudflare Worker execution limits"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-use SHA-256 fingerprint of any public HTTP/HTTPS resource without setting up your own infrastructure. Ideal for agents performing periodic integrity checks, tamper detection, or change monitoring on web pages and APIs, especially when operating in an x402 micropayment context on Base USDC.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T18:48:00.524Z","isFirstParty":false,"canonicalSlug":"uos-genesis-url-digest-sha-256-fingerprint-3d855de8"}