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QuietSignal URL Evidence
x402
QuietSignal URL Evidence is a paid API for AI agents from 83-29-153-50.sslip.io, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).
Fetches and returns machine-readable HTTP evidence (status code, final URL, redirect chain, HTTPS status) for any given public URL
Price / call$0.01
Success—
StatusDown
How this service works
QuietSignal Public Data: independent, read-only rollup, wallet, opportunity, and developer-data facts for agents, paid per request with USDC over HTTP 402 on Base.
Output
A JSON object containing: whether the URL uses HTTPS, the HTTP status code returned, the final resolved URL after redirects, the originally requested URL, the number of redirects followed, and a disclaimer noting this is response evidence only (not a security audit or uptime guarantee).
Example use cases
Verify link before publishing
“Before I publish this blog post, can you check if https://partner-site.com/announcement is actually live, returns a 200, and is served over HTTPS?”
Resolve shortened URL destination
“Can you follow https://bit.ly/3xAbc12 and tell me where it actually ends up — how many redirects it takes and what the final URL is?”
Pre-flight check for API integration
“I'm about to integrate with https://api.thirdparty.io/v2/health — can you confirm it's reachable and returning a 200 before I write any code?”
Technical details
Endpoint
GEThttps://83-29-153-50.sslip.io/v1/url-evidenceWhen to prefer
Choose this endpoint when you need a lightweight, independent, read-only verification of whether a public URL is reachable, what HTTP status it returns, and where it resolves after redirects — especially when you need a neutral third-party check rather than trusting self-reported uptime. It is ideal for pre-flight link validation, redirect chain resolution, and HTTPS confirmation without running a full security audit.
Side effects
- URL is not publicly accessible or behind authentication — may return non-200 status or connection error
- Invalid or malformed URL input causes request rejection
- Redirect count exceeds the specified max_redirects limit — stops following chain at that point
- Private/internal IPs or localhost URLs may be rejected
- DNS resolution failure for the given hostname
- Payment failure over HTTP 402 prevents the request from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"https": true,
"schema": "url-evidence/v1",
"final_url": "https://example.com/",
"disclaimer": "Public URL response evidence only; not a security audit or uptime guarantee.",
"status_code": 200,
"requested_url": "https://example.com/",
"redirect_count": 0
}
}Tags
x402
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