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URL Redirect Chain Tracer
x402
URL Redirect Chain Tracer is a paid API for AI agents from x402-url-evidence.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Traces the full HTTP redirect chain for a given URL, returning each hop, the final destination URL, and the final HTTP status code.
Price / call$0.02
Success—
StatusUnknown
How this service works
Paid deterministic utility APIs settled in native USDC on Base.
Output
Returns a JSON object containing the originally requested URL, the final resolved URL, the final HTTP status code, a count of redirects, and an ordered array of each URL in the redirect chain (each hop).
Example use cases
Debugging a broken redirect chain
“I have this URL http://mysite.com/old-page and I think it's doing multiple redirects before reaching the destination — can you trace the full redirect chain for me with a POST JSON request so I can see every hop and the final status code?”
Resolving a shortened or masked link
“Can you follow all the redirects on https://t.co/abc123xyz using a POST request with a JSON body and tell me the actual final URL it lands on and how many redirects happen along the way?”
Auditing third-party tracking links
“I want to audit this marketing link https://click.emailservice.com/track?id=9876 — can you trace its full redirect chain via a POST JSON request so I can see every intermediate URL it goes through before reaching the final destination?”
Technical details
Endpoint
POSThttps://x402-url-evidence.vercel.app/api/redirect-chainWhen to prefer
Choose this endpoint when you need to programmatically trace the full HTTP redirect path of a URL — especially for debugging redirect chains, resolving shortened or obfuscated links, or auditing tracking URLs. It is settled in USDC on Base via x402, making it suitable for autonomous agent workflows that handle micropayments natively.
Side effects
- Invalid or malformed URL returns an error response
- URL that requires authentication may not be traceable
- Network timeouts if the target URL is slow or unreachable
- Redirect loops may cause failure or a capped chain response
- Non-HTTP URL types are not supported (only HTTP/HTTPS)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"finalUrl": "https://example.com/",
"finalStatus": 200,
"requestedUrl": "http://example.com/",
"redirectChain": [],
"redirectCount": 1
}
}Tags
x402
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