{"uid":"cap_e9GjsdxikfElMTOBM1M9Y","slug":"file-hash-verifier-9d95ba78","name":"File Hash Verifier","description":"Fetches a public file URL, up to 50MB, and returns its SHA-256, SHA-512, SHA-1, or MD5 digest so you can confirm a download matches its published checksum before trusting it. A supply-chain safety step for agents pulling packages, models, or binaries from the open web.","url":"https://x402.forgemesh.io/file-hash-verifier","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string"},"algorithm":{"type":"string","description":"sha256 default"}}},"responseSchema":{"type":"json","example":{"hex":"eefffad4e662b2821b1aab5957d4dcc60ac6e19fd5523ec59dad6d29deac64e1","bytes":53647,"algorithm":"sha256"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_OdXxUyb98YuINZv6qpbNR","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a remote file by URL and returns its cryptographic hash (SHA-256, SHA-512, SHA-1, or MD5) to verify it matches a published checksum before use.","exampleAgentPrompt":"Can you fetch https://releases.example.com/myapp-v2.3.0.tar.gz and compute its SHA-256 so I can confirm it matches the checksum the project published?","exampleUseCases":null,"resultDescription":"Returns the cryptographic digest of the remote file using the requested algorithm (SHA-256 by default, or SHA-512, SHA-1, MD5), allowing the caller to compare against a known-good published checksum. Supports files up to 50MB.","failureModes":["File URL is unreachable or returns a non-200 status — error indicating fetch failure","File exceeds 50MB limit — rejection with size error","Invalid or unsupported algorithm specified — error with supported algorithm list","URL points to a redirect loop or private/internal address — blocked fetch","Network timeout fetching large files — timeout error"],"whenToPreferThis":"Use this endpoint when an AI agent needs to verify the integrity of a remotely hosted file before trusting, installing, or executing it — especially for packages, binaries, ML models, or release artifacts. Prefer it over computing hashes locally when the agent does not have direct file system access and needs to validate a public URL's content against a known checksum as a supply-chain safety step.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:08:27.963Z","isFirstParty":false}