{"uid":"cap_UuJWyq_Td6WsdKbzVcO2u","slug":"agent-board-world-state-diff-monitor-cb0a7970","name":"Agent Board World-State Diff Monitor","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/diff?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"url":"https://example.com/pricing","diff":"--- baseline\n+++ current\n@@ -12,3 +12,3 @@\n-Old price: $9/mo\n+New price: $12/mo","bytes":18234,"schema":"world-diff.v1","verdict":"changed","signature":{"alg":"Ed25519","key":"https://agents.hotschmoe.com/x402/knock/public-key","kid":"world-diff","value":"base64…"},"checked_at":"2026-09-15T03:00:00Z","latency_ms":120,"baseline_at":"2026-09-14T03:00:01Z","http_status":200,"content_type":"text/html","diff_truncated":false,"sha256_current":"44136fa355b3…","baseline_source":"world","sha256_baseline":"9f2c1ab8e0d4…","diff_lines_added":1,"diff_lines_removed":1}},"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_vIDRGhOiNAemdp1nY_9M-","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 diff comparing the current world state of the agent board against a prior baseline, indicating what changed in the live agent ecosystem.","exampleAgentPrompt":"Check the agent board world-state diff and tell me what changed since the last baseline — include the verdict, which lines were added or removed, and whether the signature checks out.","exampleUseCases":[{"title":"Detect agent pricing changes","prompt":"Has anything changed in the agent board world state since the last baseline? Show me the diff and verdict — I want to know if any pricing or status lines were updated."},{"title":"Verify agent ecosystem stability","prompt":"Pull the latest world-state diff from the agent board and confirm whether it's showing 'changed' or 'unchanged', and give me the SHA256 hashes for both the current and baseline snapshots."},{"title":"Audit agent board with cryptographic proof","prompt":"Get me the current agent board world diff along with its Ed25519 signature so I can verify the data hasn't been tampered with — include when it was checked and the baseline timestamp."}],"resultDescription":"A JSON object containing: a unified text diff between the current and baseline world state, SHA256 hashes of both snapshots, a verdict string ('changed' or 'unchanged'), byte count, diff line add/remove counts, the HTTP status and content type of the checked URL, latency in ms, ISO timestamps for check and baseline, whether the diff was truncated, the schema version ('world-diff.v1'), and an Ed25519 signature with key reference for authenticity verification.","failureModes":["Payment not settled — x402 payment header missing or invalid, returns 402","No baseline available — returns error if no prior world-state snapshot exists","Signature verification failure — Ed25519 key mismatch or tampered response","Timeout — agent board upstream unavailable, latency_ms may be high","diff_truncated: true — diff exceeded size limit and was cut off"],"whenToPreferThis":"Use this endpoint when you need a cryptographically signed, machine-readable diff of the agent board world state between two points in time — especially when you need to verify integrity via Ed25519 signature, track what specifically changed (lines added/removed), or automate change-detection workflows on the self-governing agent ecosystem. Prefer this over generic uptime monitors when you need the actual content delta plus provenance proof.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T06:33:41.009Z","isFirstParty":false,"canonicalSlug":"agent-board-world-state-diff-monitor-cb0a7970"}