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URL Redirect Chain Follower / Unshortener
x402
URL Redirect Chain Follower / Unshortener is a paid API for AI agents from agent402.tools, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Follows a short or tracking URL's full redirect chain and returns the final destination URL, each hop's status code, and the terminal HTTP status — without downloading any page content.
Price / call$0.002
Success—
StatusUnknown
How this service works
Follow a short link's redirect chain (bit.ly, t.co, youtu.be, tracking links, …) without downloading any page body: returns the final URL, the final HTTP status, and every hop with its status code and Location target. Capped at 5 redirects; every hop is SSRF-re-validated, so chains that dive into private networks are blocked. Lets agents pre-flight links before fetching or citing them.
Output
Returns the final resolved URL, its HTTP status code, and a list of each intermediate redirect hop with its status code and Location target. Capped at 5 hops. No page body content is downloaded.
Example use cases
Example prompt
“Can you trace where this link actually goes without opening it? https://bit.ly/3xAbc12 — I want to see every redirect hop and the final destination URL.”
Technical details
Endpoint
POSThttps://agent402.tools/api/unshorten-urlWhen to prefer
Use this endpoint when you need to safely inspect where a shortened, obfuscated, or tracking URL leads without fetching page content. Ideal for security checks on suspicious links, verifying affiliate or tracking URLs, or confirming a short link's destination before sharing or acting on it.
Side effects
- URL exceeds 5 redirect hops — chain truncated at the cap
- Invalid or malformed URL input
- Target server is unreachable or times out
- Non-redirect URL returns immediately with the original URL as final
- DNS resolution failure for the short domain
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | The (short) URL whose redirect chain to follow |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://youtu.be/dQw4w9WgXcQ",
"hops": [
{
"url": "https://youtu.be/dQw4w9WgXcQ",
"status": 303,
"location": "https://www.youtube.com/watch?v=dQw4w9WgXcQ&feature=youtu.be"
},
{
"url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ&feature=youtu.be",
"status": 200,
"location": null
}
],
"finalUrl": "https://www.youtube.com/watch?v=dQw4w9WgXcQ&feature=youtu.be",
"redirects": 1,
"truncated": false,
"finalStatus": 200
}
}Tags
x402
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