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Halowerk Tempo – Stylesheet Render-Blocking Resources Check
x402
Halowerk Tempo – Stylesheet Render-Blocking Resources Check is a paid API for AI agents from tempo.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Checks a public URL and counts the number of render-blocking stylesheet resources found on the page.
Price / call$0.001
Success—
StatusUnknown
How this service works
Prüft am Objekt stylesheet den Befund Zahl renderblockierender Ressourcen.
Output
Returns a performance finding indicating the number of render-blocking stylesheet resources detected on the target page, helping identify CSS files that delay initial page rendering.
Example use cases
Pre-launch page speed audit
“Before we go live, can you check how many render-blocking stylesheets are on https://myshop.com so we know what's slowing down the initial render?”
Competitor performance benchmarking
“Check https://competitor-site.com and tell me how many render-blocking CSS resources they have — I want to compare their stylesheet performance to ours.”
Monitoring after CSS refactor
“We just refactored our stylesheet loading on https://myblog.com — can you check how many render-blocking stylesheet resources remain on the page now?”
Technical details
Endpoint
POSThttps://tempo.halowerk.com/v1/pruef/tempo/blockierer/stylesheetWhen to prefer
Use this endpoint when you specifically need to count render-blocking stylesheet resources on a webpage as part of a performance audit or monitoring workflow. It is distinct from sibling endpoints that check iframes or fonts for render-blocking issues, or stylesheets for other metrics like DNS resolution time or connection setup time.
Side effects
- Invalid or non-public URL returns a validation error
- URL is unreachable or returns a non-200 status, resulting in a connection error
- CSS selector matches no elements or multiple elements (first match used)
- Target site blocks automated requests, leading to incomplete or failed analysis
- Timeout if the target page loads too slowly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ziel | — |
Tags
x402
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