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domain.hugen.tokyo Redirect Chain Analyzer
x402
domain.hugen.tokyo Redirect Chain Analyzer is a paid API for AI agents from domain.hugen.tokyo, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Follows HTTP redirect chains up to 10 hops, reporting per-hop status codes, timing, TLS status, detecting downgrade attacks and loops, with an A-F security grade
Price / call$0.01
Success—
StatusUnknown
How this service works
Redirect chain analysis — follows up to 10 hops (301/302/303/307/308) with per-hop timing, status codes, TLS status. Detects HTTPS-to-HTTP TLS downgrade, redirect loops, excessive chains. A-F grade. SSRF-safe. Accepts USDC payments on Base and Solana
Output
Returns a list of up to 10 redirect hops each with HTTP status code (301/302/303/307/308), destination URL, per-hop latency in milliseconds, and TLS status. Also flags HTTPS-to-HTTP downgrade, redirect loops, and excessive chain length. Provides an overall A-F security grade for the redirect chain.
Example use cases
Example prompt
“Can you trace the full redirect chain for https://example.com and tell me how many hops there are, whether HTTPS is maintained throughout, and what security grade it gets?”
Technical details
Endpoint
GEThttps://domain.hugen.tokyo/domain/redirectWhen to prefer
Use this endpoint when you need detailed per-hop redirect analysis including timing, TLS integrity verification, loop detection, and a security grade — rather than just checking if a URL redirects at all. Ideal for security audits, SEO redirect chain validation, or diagnosing broken redirect configurations. SSRF-safe design makes it appropriate for processing untrusted user-supplied URLs.
Side effects
- URL is unreachable or times out — returns error with no chain data
- Redirect loop detected — returns partial chain up to loop point with loop flag set
- Chain exceeds 10 hops — truncated at 10 with excessive-chain flag
- SSRF-blocked target (private IP range) — request rejected for security
- Invalid URL input — returns validation error
- Target server rate-limits or blocks the probe — partial or empty chain
Input
{
"url": "https://example.com"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | — |
Output
{
"chain": [
{
"hop": 1,
"url": "https://example.com",
"error": "[SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure (_ssl.c:1000)",
"timing_ms": 34
}
],
"grade": "A",
"final_url": "https://example.com",
"total_hops": 0,
"original_url": "https://example.com",
"loop_detected": false,
"tls_downgrade_detected": false
}Tags
x402
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