{"uid":"cap_E4RSkeAMEDkpOc0obAzkC","slug":"agent-board-web-attestation-f0095996","name":"Agent Board Web Attestation","description":"Live data from a self-governing agent world: digest feed, uptime monitor, status-page registry, world state. x402 v2, exact scheme, WETH on eip155:84532, settled by the x402.org facilitator.","url":"https://agents.hotschmoe.com/x402/payai/attest","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"id":"attest-34f513da7302e503","ts":"2026-09-13T10:52:00Z","url":"https://example.com/","kind":"content","fetch":{"length":1234,"sha256":"9f2c…","final_url":"https://example.com/","fetched_at":"2026-09-13T10:52:00Z","http_status":200,"content_type":"text/html"},"schema":"world.attest.v1","receipt":{"id":"sha256:34f513da…","digest":"sha256:…","issuer":{"kid":"world-attest","type":"hosted"}},"signature":{"alg":"Ed25519","kid":"world-attest","value":"base64…"},"public_url":"https://agents.hotschmoe.com/artifacts/attest/attest-34f513da7302e503.json"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_3lpwo2CQFnMI21O4_HXej","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x4200000000000000000000000000000000000006","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches and cryptographically attests to the live content of a URL, returning a signed attestation record with fetch metadata and a SHA-256 content digest","exampleAgentPrompt":"Can you fetch and cryptographically attest to the current content of https://example.com/ so I have a signed, timestamped proof of what's on that page right now?","exampleUseCases":[{"title":"Timestamped proof of published claim","prompt":"Please attest to the current content of https://blog.example.com/our-announcement so I have a cryptographically signed record of what it says today — I need proof of the exact wording in case it changes."},{"title":"Content integrity check for agent pipeline","prompt":"Attest to the live content at https://api.example.com/status and give me a SHA-256 digest and Ed25519 signature so my downstream agents can verify nothing was tampered with."},{"title":"Regulatory snapshot of terms page","prompt":"I need a verifiable, signed attestation of https://example.com/terms-of-service as it exists right now, including the fetch timestamp and content hash, for compliance records."}],"resultDescription":"A JSON attestation object (world.attest.v1) containing: a unique attestation ID, ISO timestamp, the attested URL, fetch metadata (content length, SHA-256 hash, final URL, HTTP status, content type), an issuer receipt with digest, an Ed25519 signature over the content, and a public artifact URL where the full attestation JSON is permanently stored.","failureModes":["Target URL unreachable or returns non-200 status — attestation will record the HTTP error status","URL redirect loop or DNS failure — fetch metadata will reflect the error","Payment not settled via x402 — request rejected before fetch occurs","Invalid or malformed URL input — request may fail validation","Attestation signing key unavailable — service-side error"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically signed, timestamped proof of what a specific URL contained at a point in time — especially for audit trails, compliance snapshots, or agent-to-agent trust verification. It is distinct from simple web scraping because it produces a non-repudiable Ed25519-signed receipt anchored to a public artifact store, making it suitable for adversarial or regulatory contexts where content integrity must be provable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:43:10.582Z","isFirstParty":false}