{"uid":"cap_5Nt4pnXLl4kk3ZqRU-I1p","slug":"penny-engine-ai-agent-outcome-guard-ping-ff691f22","name":"Penny Engine — AI Agent Outcome Guard (Ping)","description":"Machine-to-machine result validation via x402. One structured call, deterministic PASS or FAIL and SHA-256 fingerprint, $0.001 USDC on Base.","url":"https://penny-paid-batch-production.up.railway.app/ping?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"time":"2026-10-17T00:00:00.000Z","network":"eip155:8453","service":"penny-x402-diagnostic","requestId":"example-id","settlementProtected":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wDPQGNmUEMcJyOCEN4b7z","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a deterministic service health ping with timestamp, network identity, and settlement-protection status via x402 payment on Base.","exampleAgentPrompt":"Ping the Penny Engine diagnostic service and confirm it's live on Base — I need to see that settlementProtected is true and get the current timestamp and requestId back.","exampleUseCases":[{"title":"Pre-flight agent infrastructure check","prompt":"Before my agent pipeline runs, ping the Penny Engine x402 guard and confirm it's healthy on the Base network — I need to see ok=true and that settlement protection is active."},{"title":"Verifying x402 payment rail connectivity","prompt":"Can you hit the Penny Engine diagnostic endpoint and tell me whether the eip155:8453 network is reachable and settlementProtected is showing true right now?"},{"title":"Logging a timestamped proof-of-life record","prompt":"Ping the Penny Engine service for me and save the response — I want the timestamp, requestId, and network name logged so I have a record that the x402 guard was alive at this moment."}],"resultDescription":"Returns a JSON object with: ok (boolean indicating service health), time (ISO-8601 timestamp), network (EIP-155 chain identifier, e.g. eip155:8453 for Base), service name string ('penny-x402-diagnostic'), a unique requestId, and a settlementProtected boolean confirming x402 payment-rail integrity.","failureModes":["Payment not included or malformed x402 header — returns 402 Payment Required","Service temporarily unavailable on Railway deployment — returns 500 or connection timeout","Malformed request — returns 400 Bad Request","Base network congestion causing settlement confirmation delay"],"whenToPreferThis":"Choose this endpoint when you need a cheap ($0.001 USDC), machine-readable liveness check for the Penny Engine x402 infrastructure specifically, and want confirmation that the settlement-protection layer on Base is active. Prefer it over generic HTTP health checks when you need a payment-gated proof-of-life with a network identity assertion and requestId for audit trails.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T18:35:47.135Z","isFirstParty":false,"canonicalSlug":"penny-engine-ai-agent-outcome-guard-ping-ff691f22"}