Pagespeed Insights MCP vs Argus
A side-by-side look at the Pagespeed Insights MCP and Argus MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Pagespeed Insights MCP for developer tools work as a local process; choose Argus for developer tools as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Pagespeed Insights MCP when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
GOOGLE_API_KEY. - You want tools like
pagespeed_analyze_page, pagespeed_diagnose_page, pagespeed_get_field_data.
Choose Argus when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
- You want tools like
argus_audit, argus_audit_full, argus_compare.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 68/100 · Great | 57/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | API key required | Not declared |
| Pricing | BYOK (pay the provider) | Not declared |
| Required env vars | GOOGLE_API_KEY | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 76 | 5 |
| Directory activity | 1 views 0 installs 0 upvotes | 2 views 0 installs 0 upvotes |
| Tools | 6 | 9 |
| Full listing | View Pagespeed Insights MCP | View Argus |
Tools & capabilities
Pagespeed Insights MCP tools 6
pagespeed_analyze_pageRun a PageSpeed Insights Lighthouse analysis for one public page. Start with report=summary for a health check; choose full for audits, recommendations for a prioritized fix list, audit for non-performance categories, or performance-map for Mermaid. Example: analyze a mobile product page and return the three most useful remediation steps. Returns a report plus structured result. The Google API is contacted and results may be served from the local cache.pagespeed_diagnose_pageInspect one page through exactly one diagnostic lens: visual, elements, network, javascript, images, render-blocking, or third-parties. Use after pagespeed_analyze_page identifies a problem; do not use it for a general score. Example: focus=render-blocking to identify CSS/JS delaying first render. Returns focused evidence rather than a full Lighthouse dump.pagespeed_get_field_dataGet real-user Core Web Vitals from Chrome UX Report, not Lighthouse lab measurements. Use scope=page for one URL; use scope=origin with a bare origin when the page has insufficient traffic. Example: check mobile LCP and INP for https://example.com/checkout. Returns p75 field metrics or a clear no-data result.pagespeed_compare_pagesCompare two pages now (mode=pages) or measure one page against its locally stored baseline (mode=baseline). Baseline mode records the first call; use runs=3 or more and rely on guaranteed deltas, not medians alone. Example: compare staging against production, or verify whether a deployed fix improved mobile LCP. replaceBaseline overwrites local baseline state.pagespeed_analyze_batchAnalyze 1–10 public URLs and return per-page results plus success/failure counts. Use pagespeed_analyze_page for one URL or pagespeed_compare_pages for a direct comparison. Example: triage the ten highest-traffic landing pages. Progress notifications are emitted when supported by the client.pagespeed_clear_cacheClear only this server process's in-memory PageSpeed response cache, forcing later analysis calls to contact Google again. Use after a deploy when a cached result is stale. It does not change the target website, files, or remote data; repeating the call is safe.
Argus tools 9
argus_auditFast pass — JS, network, accessibility, SEO, security, CSS, contentargus_audit_fullDeep pass — adds Lighthouse, responsive checks, memory leak detection, hover-state bugsargus_compareDiff dev vs staging — screenshots, findings delta, environment regressionsargus_get_contextCapture everything broken on the open tab — with `resolved / new / persisting` diff vs the last snapshot (the fix loop)argus_watch_snapshotSnapshot the open tab without navigating (preserves auth/form state)argus_last_reportReturn last JSON report without re-runningargus_design_auditFigma URL → 13 design-token finding types (color, spacing, typography, shadows, etc.)argus_visual_diffScreenshot baseline comparison. Pass `updateBaseline: true` to reset.argus_pr_validateFetch GitHub PR diff → map changed files to affected routes → targeted audit → baseline-aware block decision (blocks on findings the PR *introduces*) + idempotent PR comment + Check Run → `{ blocked, findings, baseline, reporting }
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Pagespeed Insights MCP
{
"mcpServers": {
"pagespeed-insights-mcp-2": {
"command": "npx",
"args": [
"-y",
"pagespeed-insights-mcp"
],
"env": {
"GOOGLE_API_KEY": "YOUR_GOOGLE_API_KEY_HERE"
}
}
}
}
Argus
{
"mcpServers": {
"argus-2": {
"command": "npx",
"args": [
"-y",
"chrome-devtools-mcp@latest"
]
}
}
}
Frequently asked questions
Pagespeed Insights MCP is categorized under Developer Tools and uses a local stdio subprocess. Argus belongs to Developer Tools and uses a local stdio subprocess. Pick Pagespeed Insights MCP for developer tools work and Argus for developer tools.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Pagespeed Insights MCP is bring-your-own-key: usage is billed by the API provider you supply a key for. Auth: api key required. Argus has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add pagespeed-insights-mcp-2 and argus-2 as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Pagespeed Insights MCP has a quality signal of 68/100 (Great) with 1 views, 0 installs and 76 GitHub stars. Argus has 57/100 (Good) with 2 views, 0 installs and 5 GitHub stars.