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ISHOB Site Speed & Core Web Vitals
x402
ISHOB Site Speed & Core Web Vitals is a paid API for AI agents from api.ishob.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-14).
Runs a real headless-Chromium page load (mobile or desktop) from Cloudflare's network to measure Core Web Vitals (LCP, CLS, FCP, TTFB, TBT) and page weight with good/needs-improvement/poor ratings
Price / call$0.001
Success—
StatusUnknown
How this service works
Page speed & Core Web Vitals from a real headless-Chromium load (mobile or desktop): LCP, CLS, FCP, TTFB, total blocking time with good/needs-improvement/poor ratings, load timings, request count and page weight by resource type. Unthrottled lab run from Cloudflare's network (not Lighthouse, not field data). robots.txt respected.
Output
Returns a JSON object with: an overall rating (good/needs-improvement/poor), individual Core Web Vitals metrics (LCP, CLS, FCP, TTFB, Total Blocking Time) each with their numeric value and rating, total number of HTTP requests, and total transfer size in bytes — all measured from a real unthrottled headless-Chromium load from Cloudflare's network.
Example use cases
Pre-launch landing page audit
“Before we go live, can you measure the Core Web Vitals — LCP, CLS, FCP, TTFB — for https://staging.myproduct.com on mobile and tell me if anything is rated poor or needs improvement?”
SEO performance check for desktop
“I need to check if our homepage https://www.mybrand.com passes Core Web Vitals on desktop — can you run a real browser test and show me each metric with its rating?”
Competitor benchmarking
“Can you test the page speed and Core Web Vitals of https://www.competitor.com on mobile, including total page weight, number of requests, and LCP and CLS ratings?”
Technical details
Endpoint
GEThttps://api.ishob.com/v1/site-speed?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need real browser-based Core Web Vitals measurements (not synthetic Lighthouse scores or field data aggregates) run from Cloudflare's network without throttling. Ideal for programmatic performance checks, CI/CD pipelines, SEO audits, or competitive benchmarking where you need LCP, CLS, FCP, TTFB, and TBT with clear good/needs-improvement/poor ratings and resource-level page weight data.
Side effects
- URL is unreachable or returns an error — endpoint may return an error or empty metrics
- robots.txt disallows crawling — the test will be skipped to respect the directive
- Invalid URL format — request rejected with validation error
- Timeout if the page takes too long to load or has infinite redirects
- Non-HTTP/HTTPS URL schemes — likely rejected by URL validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"weight": {
"requests": 38,
"total_transfer_bytes": 412345
},
"overall": "good",
"core_web_vitals": {
"cls": {
"value": 0.02,
"rating": "good"
},
"lcp_ms": {
"value": 1210,
"rating": "good"
}
}
}
}Tags
x402
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