{"uid":"cap_AglTyTjX-w1ockCjXLxQ6","slug":"vibes-coded-outcome-attestation-api-ebfdf219","name":"Vibes-Coded Outcome Attestation API","description":"Pay-per-call JSON for AI agents: skill search, listing optimization, install plans, productization, and artifact risk scoring. HTTP 402 → USDC. Full skill marketplace on-site.","url":"https://vibes-coded.com/api/v1/outcomes/attest?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"ok":true,"note":"Offline-verifiable attestation.","claim":{"pages":12,"sha256":"abc123…","delivered":true},"nonce":"f3a9b1c2…","subject":"delivery of report.pdf","agent_id":"agent-42","resource":"attest","algorithm":"HMAC-SHA256+Ed25519","issued_at":"2026-08-16T20:00:00Z","signature":"a1b2c3…","claim_type":"work_done","public_key":"-----BEGIN PUBLIC KEY-----…","claim_digest":"d2c8f1e0…","generated_at":"2026-08-16T20:00:00Z","attestation_id":"att_9f2c81e4ab5d6c7d8e9f0a1b2c3d4e5f","verify_endpoint":"/api/v1/outcomes/attest-verify","ed25519_signature":"MEUCIQ…"}},"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_ZWxTVSdmR2MHuTsG52gsn","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":"Generates a cryptographically signed, offline-verifiable attestation record for a completed agent work product or deliverable","exampleAgentPrompt":"Generate a cryptographic attestation proving that agent-42 delivered report.pdf (12 pages, SHA-256 abc123) — I need an offline-verifiable signed record of this work_done claim so I can share it with the client.","exampleUseCases":[{"title":"Proof of deliverable for client billing","prompt":"Attest that agent-42 just delivered the 12-page audit-report.pdf with SHA-256 hash abc123 under a work_done claim — I need a signed, offline-verifiable receipt I can send to the client as proof before invoicing."},{"title":"Accountability trail for multi-agent pipeline","prompt":"After my summarization agent finished processing the dataset, create a cryptographic attestation for that completed task — subject is 'dataset summarization', agent ID is agent-99, so I have an immutable record in case there's a dispute later."},{"title":"Artifact integrity verification for compliance","prompt":"I need to certify that the compliance-check.pdf artifact was genuinely produced and delivered by agent-17 today — can you generate an Ed25519-signed attestation with the file's hash so auditors can verify it offline?"}],"resultDescription":"Returns a JSON object containing: a unique attestation_id, the signed claim with fields like pages, sha256, and delivered status, an HMAC-SHA256 and Ed25519 dual signature, a public key for offline verification, a nonce, issued_at and generated_at timestamps, the claim_type and subject, and a verify_endpoint URL for on-chain or remote re-verification.","failureModes":["Missing required fields (agent_id, subject, claim_type) → 400 Bad Request","Insufficient USDC balance or failed x402 payment → HTTP 402 Payment Required","Invalid or malformed artifact hash → rejection or unsigned response","Duplicate nonce or replay attack detection → rejection","Service unavailability → 503 or timeout"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to produce a tamper-proof, offline-verifiable cryptographic receipt of completed work — particularly in agent-to-agent handoffs, client billing scenarios, compliance audits, or any context where a human or downstream system needs provable assurance that a specific artifact was delivered by a specific agent. Prefer this over simple logging when non-repudiation and cryptographic verifiability are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T12:42:01.173Z","isFirstParty":false,"canonicalSlug":"vibes-coded-outcome-attestation-api-ebfdf219"}