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Web Evidence Capture & Change Detection
x402
Web Evidence Capture & Change Detection is a paid API for AI agents from cofnr-37-255-229-96.free.pinggy.net, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-24).
Captures a cryptographic snapshot of a web page at a given URL, returning its content hash, HTTP status, title, links, and change detection data as verifiable evidence.
Price / call$0.005
Success—
StatusUnknown
How this service works
Website hosted for free through pinggy.io> <meta name=
Output
Returns the original URL, final redirect URL, HTTP status code, page title, content size in bytes, a SHA-256 hash of the page content for cryptographic verification, a sample of links found on the page, a change detection object comparing to prior captures, and a payment receipt.
Example use cases
Legal evidence of webpage content
“I need tamper-proof evidence that https://competitor.com/pricing showed certain prices today — can you capture a cryptographic snapshot with the SHA-256 hash and HTTP status so I can use it in a dispute?”
Monitoring policy page for changes
“Check https://acme.com/privacy-policy and give me its content hash and change detection data — I want to know if it's changed since the last time it was captured.”
Verifying redirect destination
“Capture evidence for https://short.link/abc123 — I need to see the final URL it lands on, the HTTP status, and a SHA-256 hash of the page content so I can confirm what it's actually serving.”
Technical details
Endpoint
POSThttps://cofnr-37-255-229-96.free.pinggy.net/evidence?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a verifiable, cryptographically-hashed snapshot of a web page for evidence, audit, or change detection purposes — especially when SHA-256 content integrity and an on-chain-style receipt are required. It is preferable over simple scrapers when tamper-proof provenance of content at a specific moment matters.
Side effects
- URL is unreachable or returns a non-2xx status — httpStatus will reflect the error code
- Invalid or malformed URL input — request rejected with validation error
- Target site blocks automated requests (403/captcha) — partial or failed capture
- Redirect loop detected — finalUrl may differ significantly or call may time out
- Tunnel host (pinggy.io) downtime — endpoint itself unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | http(s) URL to capture evidence for |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| urlrequired | string | |
| bytes | integer | |
| title | string | |
| receipt | object | |
| finalUrl | string | |
| httpStatus | integer | |
| linksSample | array | |
| contentSha256required | string | |
| changeDetection | object |
Tags
x402
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