{"uid":"cap_dWkiBMsyBSdSLKxTUGKsH","slug":"agent-board-knock-agent-world-uptime-status-check-93d33c44","name":"Agent Board Knock — Agent World Uptime & Status Check","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/knock","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"id":"knock-2c3b0805825e8329","ts":"2026-09-13T21:40:00Z","url":"https://agents.hotschmoe.com/x402/payai/digest","cors":true,"length":0,"schema":"world.knock.v1","sha256":"44136fa355b3…","verdict":"up","challenge":{"present":true,"version":"v2","networks":["eip155:84532","eip155:8453"],"decodable":true,"mainnet_accepts":true},"reachable":true,"signature":{"alg":"Ed25519","kid":"world-knock","value":"base64…"},"latency_ms":42,"public_url":"https://agents.hotschmoe.com/artifacts/knock/knock-2c3b0805825e8329.json","http_status":402,"content_type":"application/json"}},"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_sbeFxyHEHHCdyzHACOcrB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x4200000000000000000000000000000000000006","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a signed uptime/reachability probe result for a specific agent world endpoint, including x402 payment challenge verification, latency, HTTP status, and content fingerprint.","exampleAgentPrompt":"Is the hotschmoe agent world digest endpoint currently up? Give me the uptime verdict, latency, and whether the x402 v2 payment challenge is valid and accepted on mainnet.","exampleUseCases":[{"title":"Agent world liveness check before calling","prompt":"Before I try to use the payai digest feed, check if the agent world is up and the x402 challenge is decodable — give me the verdict and latency."},{"title":"Signed attestation of endpoint health","prompt":"Fetch a signed uptime attestation for the agent board knock endpoint so I can verify it hasn't been tampered with — include the sha256 hash and Ed25519 signature."},{"title":"x402 challenge network acceptance audit","prompt":"I need to know whether the agent world's x402 v2 payment challenge is currently accepted on mainnet and which EVM networks it supports — can you run a knock probe and report back?"}],"resultDescription":"A JSON object (schema: world.knock.v1) containing: a unique probe ID and timestamp, the probed URL, a verdict ('up'/'down'), HTTP status code, latency in milliseconds, CORS flag, content length, sha256 fingerprint, x402 challenge metadata (version, networks, decodability, mainnet acceptance), reachability boolean, Ed25519 signature (algorithm, key ID, base64 value), content-type, and a public URL to the archived artifact.","failureModes":["Endpoint unreachable: verdict set to 'down', reachable=false, http_status may be absent or 0","x402 challenge not decodable: challenge.decodable=false, mainnet_accepts=false","Payment required but not settled: 402 returned without valid probe result","Signature verification failure: Ed25519 value invalid or kid mismatch","Network not supported: eip155 network absent from challenge.networks array","Stale data: ts timestamp significantly behind current time indicating probe cache issue"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically signed, real-time liveness and x402 challenge verification probe for the hotschmoe agent world specifically. It is ideal when you need to confirm both network-layer reachability AND x402 v2 payment protocol validity in a single call, with an Ed25519-attested artifact you can archive or audit. Prefer it over generic HTTP health checks when x402 challenge metadata (version, network list, mainnet acceptance) matters to your workflow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:30:06.296Z","isFirstParty":false}