# PageSpeed Insights API – Lighthouse Performance Audit

> PageSpeed Insights API – Lighthouse Performance Audit is a paid API for AI agents from seo.openverbs.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-11).

Runs a Google PageSpeed Insights (Lighthouse) audit on a given URL for mobile or desktop, returning a performance score plus Core Web Vitals (LCP, FCP, CLS, TBT, Speed Index, TTI) and real-user CrUX field data.

## Facts

- Endpoint: POST https://seo.openverbs.com/v1/pagespeed?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pagespeed-insights-api-lighthouse-performance-audit-4e93dd8b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qSEpVNcsydqObQy7JzPwn

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability pagespeed-insights-api-lighthouse-performance-audit-4e93dd8b -d '<json body>'
```

Example prompt: Can you run a Google PageSpeed Insights audit on https://www.example.com for mobile and tell me the performance score along with the Core Web Vitals like LCP, FCP, and CLS?

## When to prefer this

Choose this endpoint when you need Google PageSpeed Insights / Lighthouse performance metrics for a specific URL, especially Core Web Vitals (LCP, FCP, CLS) for SEO or performance monitoring purposes. It wraps the Google PageSpeed Insights API with a simple x402 micropayment interface, making it ideal for agents that need programmatic, per-call access to Lighthouse audits without managing Google API keys.

## Known failure modes

- Invalid or unreachable URL returns an error with no audit data
- Private or localhost URLs cannot be audited by Google PageSpeed
- Rate limiting may occur if the same URL is audited too frequently
- Pages requiring authentication or behind paywalls may return incomplete results
- Transient Google API errors may cause occasional failures

## How this service works

Page speed API - Google PageSpeed Insights (Lighthouse) performance audit for a URL on mobile or desktop. Returns the performance score plus lab Core Web Vitals (LCP, FCP, CLS, TBT, Speed Index, TTI) and, where available, real-user (CrUX) field data. Data source: Google PageSpeed Insights.

## Output

Returns a performance score (0–100) and lab-measured Core Web Vitals including Largest Contentful Paint (LCP), First Contentful Paint (FCP), Cumulative Layout Shift (CLS), Total Blocking Time (TBT), Speed Index, and Time to Interactive (TTI). Where available, also includes real-user CrUX field data reflecting actual Chrome user experiences.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "format": "uri",
   "maxLength": 2000,
   "description": "Absolute http(s) URL to analyse."
  },
  "strategy": {
   "enum": [
    "mobile",
    "desktop"
   ],
   "type": "string",
   "description": "Device profile. Defaults to mobile."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pagespeed-insights-api-lighthouse-performance-audit-4e93dd8b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from seo.openverbs.com](https://www.zero.xyz/host/seo.openverbs.com/llms.txt)