{"uid":"cap_CH2tRTFSdo72bl5hxc6VJ","slug":"anonymous-fetch-and-report-witness-9eb7ce0f","name":"Anonymous Fetch-and-Report Witness","description":"Independent anonymous fetch-and-report witness: target + negative control from the same run, declared blind_spot, reader identity (anonymous, no cookies/auth/referer) and vantage (single host; not a second region). ?url=https://...&expect=<substring>&expect_absent=<substring>","url":"https://pyfile-agent.taile3ff35.ts.net/data/witness","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}}},"output":{"type":"object"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_02V3K8S_qO2YM5BwfOn4o","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a URL anonymously (no cookies, auth, or referer) and reports whether expected substrings are present or absent, serving as an independent blind-spot-aware witness for content verification.","exampleAgentPrompt":"Anonymously fetch https://example.com/announcement and check whether the word 'launched' is present and that 'draft' is absent — report back what an anonymous reader would actually see.","exampleUseCases":[{"title":"Public page content audit","prompt":"Fetch https://mycompany.com/press-release as a completely anonymous visitor with no cookies or auth and confirm that the phrase 'Series B' appears and that the word 'confidential' does not appear anywhere on the page."},{"title":"Anonymous login-wall detection","prompt":"Check https://app.example.com/dashboard anonymously — no cookies, no auth — and tell me if the text 'Sign in to continue' is present and whether 'Dashboard' is absent, so I know if the page is gated to logged-out users."},{"title":"Deployment verification without bias","prompt":"After my latest deploy, independently fetch https://staging.mysite.com and verify that 'v2.0.1' is present in the page content and that 'v1.9.9' is absent, acting as a neutral anonymous witness rather than using my own session."}],"resultDescription":"Returns a report indicating whether the expected substring was found and whether the expected-absent substring is indeed absent, along with declared reader identity (anonymous, no cookies/auth/referer), vantage information (single host), and any declared blind spots — giving a trustworthy, impartial witness account of what a public anonymous fetch returns.","failureModes":["Target URL is unreachable or returns an HTTP error — fetch failure reported","Expected substring not found even though it exists (blind spot: single-host vantage, not multi-region)","Page requires authentication or JS rendering that anonymous plain fetch cannot handle","URL is malformed or missing — request rejected","Rate limiting or network timeout on the target host"],"whenToPreferThis":"Choose this endpoint when you need an independent, anonymous, credential-free witness to verify whether a public URL contains or lacks specific substrings — especially when you want a declared blind-spot-aware report rather than a scrape with your own session. It is ideal for deployment checks, content auditing, and privacy-neutral validation where the reader identity and vantage must be transparent and unbiased.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:11:16.042Z","isFirstParty":false}