{"uid":"cap_Bak1gewxy8heSOT_Gzngv","slug":"witnessd-retrieve-witnessed-record-6cf10aaa","name":"witnessd Retrieve Witnessed Record","description":"Pay a few cents to have any URL or API response independently fetched, hashed, timestamped and archived by a neutral third party. Merkle-anchored on Base. Built for AI agents; useful to humans.","url":"https://witnessd.vip/api/retrieve/%7Bid%7D?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rTNfX6jKE3DZ1NHwort-Z","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves a previously archived, hashed, and Merkle-anchored witness record for a URL or API response by its unique ID.","exampleAgentPrompt":"Retrieve my witnessd record with ID abc123 so I can check the archived hash and timestamp proving what that API returned last Tuesday.","exampleUseCases":[{"title":"Audit trail for AI agent output","prompt":"Pull up the witnessd record with ID w_7f3a9d2c — I need to show the Merkle proof and timestamp proving what that pricing API returned when my agent queried it yesterday."},{"title":"Legal evidence of webpage content","prompt":"Retrieve witness record ID wr_8821bdef for me so I can confirm the archived hash and blockchain timestamp showing exactly what was on that webpage before they edited it."},{"title":"Verify a contract term snapshot","prompt":"Get me the witnessd record ID ctr_55a1f009 — I need the timestamped hash anchored on Base to prove what the contract terms page said at the time my client agreed to them."}],"resultDescription":"Returns the previously archived witness record including: the original URL or API response content snapshot, its cryptographic hash, a UTC timestamp of when the fetch occurred, a Merkle proof structure, and the anchor reference on the Base blockchain, all independently attested by the witnessd neutral third party.","failureModes":["Invalid or unknown record ID — returns 404 or error indicating the witness record does not exist","Record ID malformed — returns 400 bad request if the ID format is incorrect","Payment not confirmed — returns 402 if the $0.05 USDC x402 payment was not completed","Service unavailable — returns 503 if the archiving backend is temporarily down","Record expired or pruned — some records may have a retention window and could be unavailable after expiry"],"whenToPreferThis":"Choose this endpoint when you need to retrieve a previously created witness record and its associated cryptographic proof — use it after you have already submitted a URL for witnessing and received a record ID. This is the read/lookup complement to the submission endpoint. Prefer this when you need tamper-evident, third-party-attested proof of what a URL or API returned at a specific moment, especially for audit trails, legal evidence, or AI agent accountability. This differs from general archiving services in that results are Merkle-anchored on Base and designed for machine-readable verification by AI agents.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T06:30:05.842Z","isFirstParty":false,"canonicalSlug":"witnessd-retrieve-witnessed-record-6cf10aaa"}