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HTTP Compression Check
x402
HTTP Compression 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).
Checks whether a webpage is served with gzip, brotli, or zstd compression, reporting the negotiated content-encoding, transfer vs decoded size, and Vary header.
Price / call$0.01
Success—
StatusUnknown
How this service works
HTTP compression check: whether a page is served with gzip, brotli or zstd, the content-encoding actually negotiated, transfer size vs decoded size where available, and the vary header. Performance sanity check for any site. $0.01 per page.
Output
Returns whether the page is served with gzip, brotli, or zstd compression (or none), the actual content-encoding header negotiated, transfer size versus decoded size where available, and the Vary header — giving a clear performance sanity check for the URL.
Example use cases
Pre-launch performance audit
“Before we go live, can you check if https://myapp.com is properly serving compressed content? I want to know the encoding type and whether transfer size is meaningfully smaller than decoded size.”
Debugging missing compression on CDN
“Something seems off — can you check whether https://cdn.acmecorp.com/assets/main.js is actually being compressed? Tell me what content-encoding is negotiated and what the Vary header looks like.”
Competitor benchmark compression check
“Can you check what HTTP compression https://competitor-site.com is using? I want to see if they're on brotli or still just gzip, and get the transfer vs decoded size breakdown.”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/site/compressionWhen to prefer
Use this endpoint when you need a quick, automated HTTP-level check of compression settings for any public URL — especially useful for performance audits, CI/CD pipeline checks, or verifying CDN/server configuration. Prefer this over manual browser DevTools inspection when you need programmatic, repeatable results at scale or from an agent workflow.
Side effects
- URL is unreachable or returns a non-200 status
- Server does not respond to negotiated encoding headers
- Page blocks automated requests (bot detection, firewall)
- URL requires authentication, returning 401 or 403
- Very large pages may time out before full response is received
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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