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Anonymous Fetch-and-Report Witness
x402
Anonymous Fetch-and-Report Witness is a paid API for AI agents from pyfile-agent.taile3ff35.ts.net, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
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.
Price / call$0.003
Success—
StatusUnknown
How this service works
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>
Output
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.
Example use cases
Public page content audit
“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.”
Anonymous login-wall detection
“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.”
Deployment verification without bias
“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.”
Technical details
Endpoint
GEThttps://pyfile-agent.taile3ff35.ts.net/data/witnessWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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