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Web Evidence Capture & Change Detection
x402
Web Evidence Capture & Change Detection is a paid API for AI agents from epnkd-159-89-4-32.run.pinggy-free.link, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-24).
Captures a cryptographic evidence snapshot of a URL, returning its SHA-256 content hash, HTTP status, title, links, and change-detection metadata
Price / call$0.005
Success—
StatusUnknown
How this service works
Website hosted for free through pinggy.io> <meta name=
Output
Returns a JSON object containing the requested URL, the final resolved URL (after redirects), HTTP status code, page title, content size in bytes, a SHA-256 hash of the page content, a sample of links found on the page, a change-detection sub-object for comparing against prior captures, and a payment receipt.
Example use cases
Legal webpage content preservation
“I need tamper-evident proof of what this terms-of-service page says right now — can you capture an evidence snapshot of https://acme.com/terms and give me the content hash and HTTP status?”
Monitoring a competitor's pricing page
“Check https://competitor.com/pricing and give me the SHA-256 fingerprint and any change detection info so I can compare it against last week's snapshot and see if anything changed.”
Verifying a published article still exists
“Can you fetch evidence for https://news-site.com/article/12345 and confirm it's still live — I need the HTTP status, final URL, and content hash for my records.”
Technical details
Endpoint
POSThttps://epnkd-159-89-4-32.run.pinggy-free.link/evidence?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cryptographic, tamper-evident record of a webpage's content at a specific point in time — particularly for legal evidence, compliance audits, or change-detection workflows. It is especially useful when you need both a SHA-256 content hash and structured metadata (title, status, links) in a single call, and when you want a payment receipt as proof of the capture event.
Side effects
- URL is unreachable or times out — endpoint may return an error or non-200 HTTP status
- Invalid or malformed URL input — request will fail schema validation
- Target page returns a non-HTML response (e.g. binary file) — title and links may be empty or null
- Pinggy tunnel is offline or rate-limited — the endpoint itself may be unavailable
- HTTPS certificate errors on the target URL — capture may fail or return partial data
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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