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cache-headers-check
x402
cache-headers-check is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Fetches and parses HTTP caching headers for a URL, including Cache-Control directives, ETag, Last-Modified, Expires, Age, and CDN cache status headers.
Price / call$0.01
Success—
StatusUnknown
How this service works
Caching headers check: Cache-Control directives parsed (max-age, s-maxage, public/private, no-store, immutable, stale-while-revalidate), ETag, Last-Modified, Expires, Age, and CDN cache status headers (cf-cache-status, x-cache). Debug caching and CDN behaviour. $0.01 per URL.
Output
A structured breakdown of all HTTP caching headers for the requested URL, including parsed Cache-Control directives (max-age, s-maxage, public/private, no-store, immutable, stale-while-revalidate), ETag, Last-Modified, Expires, Age, and CDN-specific headers such as cf-cache-status and x-cache.
Example use cases
Debugging uncached CDN responses
“Why isn't my page being cached by Cloudflare? Can you inspect the cache headers for https://mysite.com/products and tell me what Cache-Control, cf-cache-status, and any ETag or Last-Modified headers are returned?”
Auditing static asset cache policy
“Check the caching headers on https://cdn.myapp.com/assets/main.js — I want to know if it's set to immutable, what the max-age is, and whether the CDN is serving it from cache.”
Verifying no-store on sensitive pages
“Can you verify that the caching headers on https://mybank.com/account/statement include no-store and that it's marked private, so the response won't be cached anywhere?”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/site/cache-headersWhen to prefer
Use this endpoint when you need to inspect, debug, or audit HTTP caching behavior for a specific URL — especially when diagnosing CDN cache misses, verifying cache-control policies, or auditing security-sensitive pages for no-store compliance. Prefer this over manually inspecting headers when you need structured, parsed output of all caching-related directives in one call.
Side effects
- URL is unreachable or returns a network error — no headers returned
- URL returns a redirect and caching headers may reflect the redirect response, not the final destination
- CDN headers like cf-cache-status absent if the site doesn't use Cloudflare or a supported CDN
- Invalid or malformed URL input — request fails with validation error
- Rate limiting or access restrictions on the target URL may prevent header retrieval
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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