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URL Redirect Chain Tracer with Health Grading
x402
URL Redirect Chain Tracer with Health Grading is a paid API for AI agents from netintel-production-440c.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Follows a URL through its full redirect chain (up to 20 hops), recording status codes, timing, headers, TLS status, and protocol downgrades per hop, then returns an overall redirect health grade (A–F).
Price / call$0.001
Success—
StatusUnknown
How this service works
Follows a URL through its full redirect chain (up to 20 hops), recording status codes, timing, headers, TLS status, and protocol downgrades per hop, then returns an overall redirect health grade (A–F).
Output
Returns the full redirect chain as an array of hops (each with URL, status code, timing, TLS status, headers), plus: final URL, final status code, total hop count, total timing in ms, loop detection boolean, protocol downgrade boolean, a list of flags and deductions, a numeric health score, and an overall letter grade (A–F) summarizing redirect health.
Example use cases
Example prompt
“Can you trace all the redirects for http://bit.ly/3xampleLink and tell me the full redirect chain, whether it ever downgrades from HTTPS to HTTP, and what overall health grade it gets?”
Technical details
Endpoint
GEThttps://netintel-production-440c.up.railway.app/redirect/trace?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to audit or debug the full redirect path of a URL, detect redirect loops, check for HTTP-to-HTTPS protocol downgrades, measure per-hop latency, or get an at-a-glance health grade for a URL's redirect chain. Prefer it over a simple HEAD request when chain depth, TLS integrity, or redirect health scoring matters.
Side effects
- Invalid or malformed URL input — returns an error indicating bad input
- Loop detected after exhausting max hops — loop_detected flag set to true, chain truncated
- Target URL is unreachable or times out — connection error returned
- max_hops exceeds 20 — capped or rejected with validation error
- Non-HTTP/HTTPS scheme provided — unsupported protocol error
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "http://example.com",
"max_hops": 10
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"chain": [
{
"hop": 0,
"tls": false,
"url": "http://example.com/",
"headers": {
"age": "2",
"date": "Fri, 12 Jun 2026 02:00:14 GMT",
"allow": "GET, HEAD",
"cf-ray": "a0a542bfcc06159a-SJC",
"server": "cloudflare",
"connection": "keep-alive",
"content-type": "text/html",
"last-modified": "Thu, 11 Jun 2026 20:55:20 GMT",
"cf-cache-status": "HIT",
"content-encoding": "gzip",
"transfer-encoding": "chunked"
},
"location": null,
"timing_ms": 14,
"status_code": 200
}
],
"flags": [
"http_entry_point"
],
"grade": "A",
"score": 95,
"final_url": "http://example.com/",
"deductions": [
{
"points": -5,
"reason": "http_entry_point"
}
],
"total_hops": 0,
"loop_detected": false,
"total_timing_ms": 14,
"final_status_code": 200,
"protocol_downgrade": false
}Schema · Response
{
"type": "json",
"example": {
"chain": [
{
"hop": 0,
"tls": false,
"url": "http://example.com/",
"headers": {
"server": "nginx",
"location": "https://example.com/"
},
"location": "https://example.com/",
"timing_ms": 85,
"status_code": 301
},
{
"hop": 1,
"tls": true,
"url": "https://example.com/",
"headers": {
"server": "nginx",
"content-type": "text/html"
},
"location": null,
"timing_ms": 42,
"status_code": 200
}
],
"flags": [
"http_entry_point"
],
"grade": "A",
"score": 95,
"final_url": "https://example.com/",
"deductions": [
{
"points": -5,
"reason": "http_entry_point"
}
],
"total_hops": 1,
"loop_detected": false,
"total_timing_ms": 127,
"final_status_code": 200,
"protocol_downgrade": false
}
}Tags
x402
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