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HTTP Response Headers Inspector
x402
HTTP Response Headers Inspector is a paid API for AI agents from remarkable-creation-production-8797.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Fetches and inspects HTTP response headers (cache, CORS, security) for any public URL
Price / call$0.001
Success—
StatusUnknown
How this service works
Inspect useful HTTP response, cache, CORS, and security headers for a public URL.
Output
A structured breakdown of HTTP response headers grouped by category — including cache headers (Cache-Control, ETag, Expires), CORS headers (Access-Control-Allow-Origin, Access-Control-Allow-Methods), and security headers (Strict-Transport-Security, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy) returned by the target URL.
Example use cases
Security header audit for a website
“Can you inspect the response headers for https://stripe.com and tell me whether it has HSTS, Content-Security-Policy, and X-Frame-Options set?”
Debugging CORS policy for an API
“I'm getting CORS errors when calling https://api.myservice.com from my browser — can you fetch its response headers and show me what CORS headers it's actually sending back?”
Checking cache configuration for a CDN asset
“Can you look at the headers returned by https://cdn.example.com/assets/main.js and tell me what Cache-Control and ETag headers it's using?”
Technical details
Endpoint
GEThttps://remarkable-creation-production-8797.up.railway.app/v1/headersWhen to prefer
Use this endpoint when you need to inspect or audit the HTTP response headers of a public URL — especially for security compliance checks, CORS debugging, or cache configuration analysis. Prefer this over a full page scraper when you only need header metadata, not page content. It complements sibling endpoints for redirect resolution and metadata extraction on the same platform.
Side effects
- Private or localhost URLs return an error since only public URLs are supported
- Non-existent hostnames result in a DNS resolution failure
- HTTP method mismatch (e.g. using POST) not supported by this endpoint
- Target URL returns a non-standard response or times out
- Rate limits or firewall rules on the target server block the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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