Google PageSpeed Insights

Web & SEO Tools

Operated by Sourcelane✓ verified

Runs lists of URLs through Google PageSpeed Insights / Lighthouse audits to produce per-URL performance diagnostics and web vitals for automated analysis. Outputs structured Lighthouse category scores (performance, accessibility, best-practices, SEO, PWA) on a 0–100 scale, Core Web Vitals and timing metrics (LCP, FCP, CLS, TBT, Speed Index with vitals in milliseconds except CLS), audit context for mobile or desktop user-agents, fetch timestamp and final resolved URL, and per-URL status with error reasons for failed audits. Uses Google’s PageSpeed Insights infrastructure to execute Lighthouse audits rather than local browser scraping, and is error-tolerant for bulk URL runs.

Verified Sep 28, 3:55 AM

$0.008

per url

Up to 100 per call. Only pay for results returned; failed calls are refunded.

What people use it for

SEO audits to bulk-score site pages and identify pages that reduce domain performance
Agency client reporting to pull fresh Lighthouse metrics for scheduled reports
Regression monitoring after deploys to detect score changes between builds
Core Web Vitals tracking to monitor LCP, CLS, and TBT trends over time
Competitor benchmarking to compare Lighthouse scores and web vitals across domains

Trust & reliability

7d uptime trend

Window	Uptime	Success rate	p50	p95
24h	—	—	—	—
7d	—	—	—	—
30d	—	—	—	—

Calling contract

Call it through Sourcelane's gateway or MCP server. We run the connector, apply your agent's spend guardrails, and bill only the results returned.

Call it via Sourcelane

curl -X POST https://api.usesourcelane.com/v1/call \
  -H "Authorization: Bearer sl_live_your_agent_key" \
  -H "Content-Type: application/json" \
  -d '{"listing":"google-pagespeed-insights","params":{},"maxResults":10}'

Request params

Field	Type	Required	Description
`strategy`	string	optional	Whether to run the Lighthouse audit as a mobile or desktop client.
`categories`	array	optional	Lighthouse categories to evaluate. Supported values: performance, accessibility, best-practices, seo, pwa.

Each result contains

Field	Type	Description
`url`	string	Url
`status`	string	Status
`strategy`	string	Strategy
`performanceScore`	null	Performance Score
`accessibilityScore`	null	Accessibility Score
`bestPracticesScore`	null	Best Practices Score
`seoScore`	null	Seo Score
`pwaScore`	null	Pwa Score
`lcp`	null	Lcp
`fcp`	null	Fcp
`cls`	null	Cls
`tbt`	null	Tbt
`speedIndex`	null	—
`fetchTime`	null	—
`finalUrl`	null	—
`error`	string	—

Use Google PageSpeed Insights from Claude, ChatGPT or Cursor

Pick your tool and connect in under a minute. Then just ask — for example: “For these 50 domains, find contact emails and what e-commerce platform they run on.”

Connect Claude

Web, desktop and mobile. Paste one URL.

1Copy your personal connector URL
2In Claude open Settings → Connectors → Add custom connector
3Paste the URL and click Add — done

Manual setup (config files, REST, Python) +

Claude Code

Adds the Sourcelane MCP server with your key as a header.

terminal

claude mcp add --transport http sourcelane https://api.usesourcelane.com/mcp \
  --header "Authorization: Bearer sl_live_your_agent_key"

Claude Desktop (config file)

Alternative to the connector URL: add to claude_desktop_config.json, then restart Claude.

claude_desktop_config.json

{
  "mcpServers": {
    "sourcelane": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://api.usesourcelane.com/mcp",
        "--header",
        "Authorization:${AUTH_HEADER}"
      ],
      "env": {
        "AUTH_HEADER": "Bearer sl_live_your_agent_key"
      }
    }
  }
}

Cursor & Windsurf

Add to ~/.cursor/mcp.json (or Windsurf's mcp_config.json).

mcp.json

{
  "mcpServers": {
    "sourcelane": {
      "url": "https://api.usesourcelane.com/mcp",
      "headers": {
        "Authorization": "Bearer sl_live_your_agent_key"
      }
    }
  }
}

VS Code

Save as .vscode/mcp.json. VS Code prompts for your key once.

.vscode/mcp.json

{
  "servers": {
    "sourcelane": {
      "type": "http",
      "url": "https://api.usesourcelane.com/mcp",
      "headers": {
        "Authorization": "Bearer ${input:sourcelane-key}"
      }
    }
  },
  "inputs": [
    {
      "type": "promptString",
      "id": "sourcelane-key",
      "description": "Sourcelane agent key",
      "password": true
    }
  ]
}

ChatGPT Custom GPT (Actions)

Create a GPT → Actions → Import from URL, then Authentication: API Key, Bearer.

OpenAPI schema URL

https://usesourcelane.com/openapi.json

REST

One POST. Pass maxResults to cap cost.

curl

curl -X POST https://api.usesourcelane.com/v1/call \
  -H "Authorization: Bearer sl_live_your_agent_key" \
  -H "Content-Type: application/json" \
  -d '{"listing":"google-pagespeed-insights","params":{},"maxResults":10}'

Python, LangChain, CrewAI, OpenAI Agents SDK…

Wrap the REST call as a tool, or point an MCP client at the endpoint.

python

import requests

res = requests.post(
    "https://api.usesourcelane.com/v1/call",
    headers={"Authorization": "Bearer sl_live_your_agent_key"},
    json={
        "listing": "google-pagespeed-insights",
        "params": {},
        "maxResults": 10,
    },
    timeout=300,
)
body = res.json()
print(body["receipt"]["chargedMicros"], "micro-USD for", body["receipt"]["results"], "results")
print(body["data"])

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