{"uid":"cap_kuyngeLP4wORBvAEvQ5pY","slug":"td-agent-utility-change-check-website-deployment-verification-735a3d09","name":"TD Agent Utility · Change Check (Website & Deployment Verification)","description":"Independent website and deployment verification for AI agents: HTTP, DNS, TLS and Chromium screenshot evidence. Three deterministic tools, x402 V2 Base USDC.","url":"https://tdagentutility.co.uk/v1/change-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"tool":"change_check","changed":false,"current":{},"version":0,"previous":null,"warnings":[],"checked_at":"2026-10-15T00:00:00Z","first_seen":false,"differences":{},"result_status":"PASS"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.006","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.006/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_hbR5tr6PLNxZvvNpLCx3e","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.006","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a previously-seen URL has changed by comparing current HTTP, DNS, TLS, and Chromium snapshot data against a stored baseline, returning a diff and pass/fail status.","exampleAgentPrompt":"Has https://myapp.example.com changed since you last checked it? Run a change check on it — look at HTTP headers, DNS, TLS, and a screenshot — and tell me if anything is different from before.","exampleUseCases":[{"title":"Post-deploy sanity check for a web app","prompt":"We just pushed a new release to https://staging.mycompany.com — can you run a change check to confirm something actually changed from the previous snapshot and that there are no TLS or DNS warnings?"},{"title":"Third-party vendor site integrity monitoring","prompt":"I need to know if our payment gateway landing page at https://checkout.vendor.io looks any different from the last time we verified it — check HTTP, DNS, TLS and screenshot for any differences."},{"title":"Unexpected website tampering alert","prompt":"Can you check whether https://www.mybrand.co.uk has been tampered with since the last verification? I want to see if anything in the HTTP response, DNS records, TLS cert, or visual screenshot has changed."}],"resultDescription":"A JSON object containing a boolean 'changed' flag, a 'differences' object describing what changed, the 'current' snapshot data, a 'version' counter, a 'result_status' of PASS or FAIL, any 'warnings', the 'checked_at' timestamp, and a 'first_seen' boolean indicating if this is the first check for the URL.","failureModes":["URL is unreachable or returns a non-200 status — result_status may be FAIL with warnings","DNS resolution failure for the target domain","TLS certificate error or mismatch on the target host","No previous baseline exists — first_seen will be true and differences will be empty","Chromium screenshot capture times out for slow-loading pages","Invalid or missing URL parameter in the request body"],"whenToPreferThis":"Choose this endpoint when you need deterministic, evidence-based change detection across multiple signals (HTTP, DNS, TLS, and visual screenshot) rather than a simple HTTP diff. It is ideal for post-deployment verification, third-party site integrity checks, and tamper detection where a versioned history and structured diff — not just a status code — are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:37:10.289Z","isFirstParty":false,"canonicalSlug":"td-agent-utility-change-check-website-deployment-verification-735a3d09"}