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tempo.halowerk.com – TTFB Check for Font Resources
x402
tempo.halowerk.com – TTFB Check for Font Resources 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).
Measures Time to First Byte (TTFB) for a font/typeface resource at a given URL, returning latency timing data.
Price / call$0.001
Success—
StatusUnknown
How this service works
Prüft am Objekt schrift den Befund Zeit bis zum ersten Byte.
Output
Returns a TTFB (Time to First Byte) timing measurement for the specified font resource URL, indicating how long the server takes to respond with the first byte of data. May include connection diagnostic details.
Example use cases
Font CDN latency audit
“I want to know the TTFB for the web font at https://cdn.mysite.com/fonts/OpenSans.woff2 — can you measure how fast the server responds with the first byte?”
Diagnosing slow page render from fonts
“My site feels sluggish and I suspect the font is slow to load. Can you check the time to first byte for https://mysite.com/assets/fonts/Roboto-Regular.woff2 and tell me the latency?”
Monitoring font performance over time
“Check the TTFB for the font resource at https://fonts.mybrand.com/logo-font.woff2 — I want to know if the server is responding quickly enough for our performance budget.”
Technical details
Endpoint
POSThttps://tempo.halowerk.com/v1/pruef/tempo/ttfb/schriftWhen to prefer
Use this endpoint specifically when you need to isolate and measure the TTFB of a font or typeface resource (woff, woff2, ttf, otf, etc.) hosted at a public URL. Prefer this over general page-speed tools when your goal is granular font asset latency analysis rather than full-page performance. Choose this over sibling endpoints (e.g. image or video TTFB) when the target resource is a font file.
Side effects
- URL is unreachable or returns a non-2xx status — measurement fails or returns error
- URL points to a private/non-public resource — connection refused or timeout
- Invalid CSS selector provided — selector mismatch or no matching element
- Malformed or too-long URL — validation error
- Font server is rate-limiting — intermittent failures or elevated TTFB readings
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ziel | — |
Tags
x402
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