mcp-seo-audit Server

mcp-seo-audit

A Model Context Protocol (MCP) server for SEO auditing with Google Search Console, Indexing API, Chrome UX Report, PageSpeed Insights, local Lighthouse, robots.txt checks, sitemap analysis, on-page SEO inspection, crawl audits, and live site analysis. Works with Claude Code, Claude Desktop, Cursor, and any MCP-compatible client.

Forked from AminForou/mcp-gsc and expanded into a broader technical SEO and performance audit server with 30 tools and a full test suite.

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What It Does

Category	Tools	Description
Property Management	list_properties, add_site, delete_site	List, add, and remove GSC properties
Search Analytics	get_search_analytics, get_advanced_search_analytics, get_performance_overview, get_search_by_page_query, compare_search_periods	Query clicks, impressions, CTR, position with filtering, dimensions, and period comparison
URL Inspection	inspect_url, batch_inspect_urls	Check indexing status, crawl info, canonical, robots for one or many URLs
Indexing API	request_indexing, request_removal, check_indexing_notification, batch_request_indexing	Submit/remove URLs from Google's index via the Indexing API
Sitemaps	get_sitemaps, submit_sitemap, delete_sitemap	List, submit, and delete sitemaps
Core Web Vitals	get_core_web_vitals	LCP, FID, CLS, INP, TTFB via the Chrome UX Report (CrUX) API
Performance Audits	get_pagespeed_insights, run_lighthouse_audit	Run PageSpeed Insights and local Lighthouse audits with category scores, failing audit summaries, and automatic Lighthouse fallback when PSI errors or quota fails
Technical SEO	inspect_robots_txt, analyze_sitemap, analyze_page_seo, crawl_site_seo, audit_live_site	Inspect robots.txt, validate sitemaps, extract on-page SEO signals, rank findings by severity, crawl internal pages, and run a live SEO audit without GSC access
SEO Analysis	find_striking_distance_keywords, detect_cannibalization, split_branded_queries	Find keywords at positions 5-20, detect pages competing for the same query, split branded vs non-branded traffic
Site Audit	site_audit	All-in-one report: sitemap health, indexing status, canonical mismatches, performance summary
Auth	reauthenticate	Switch Google accounts by clearing cached OAuth tokens

30 tools total.

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Setup

1. Google API Credentials

OAuth (recommended)

1. Go to Google Cloud Console
2. Enable the Search Console API and Web Search Indexing API
3. Create an OAuth 2.0 Client ID (Desktop app)
4. Download client_secrets.json

Service Account

1. Create a service account in Google Cloud Console
2. Download the JSON key file
3. Add the service account email to your GSC properties

2. Install

Option A: PyPI

MCP clients can run the PyPI package directly:

uvx mcp-seo-audit

Or install it as a persistent command:

pipx install mcp-seo-audit

Option B: Source checkout

git clone https://github.com/GiorgiKemo/mcp-seo-audit.git
cd mcp-seo-audit
python -m venv .venv

# Activate:
# macOS/Linux: source .venv/bin/activate
# Windows:     .venv\Scripts\activate

pip install -r requirements.txt

3. Configure Your MCP Client

Claude Code (~/.claude/settings.json)

With the PyPI package:

{
  "mcpServers": {
    "seo-audit": {
      "command": "uvx",
      "args": ["mcp-seo-audit"],
      "env": {
        "GSC_OAUTH_CLIENT_SECRETS_FILE": "/path/to/client_secrets.json",
        "PAGESPEED_API_KEY": "your-google-api-key",
        "CRUX_API_KEY": "your-google-api-key"
      }
    }
  }
}

With a source checkout:

{
  "mcpServers": {
    "seo-audit": {
      "command": "/path/to/mcp-seo-audit/.venv/bin/python",
      "args": ["/path/to/mcp-seo-audit/gsc_server.py"],
      "env": {
        "GSC_OAUTH_CLIENT_SECRETS_FILE": "/path/to/client_secrets.json",
        "PAGESPEED_API_KEY": "your-google-api-key",
        "CRUX_API_KEY": "your-google-api-key"
      }
    }
  }
}

Claude Desktop (claude_desktop_config.json)

Same JSON structure — see Claude Desktop MCP docs for config file location.

4. Optional: Performance API Keys

For field and lab performance data, set CRUX_API_KEY and PAGESPEED_API_KEY in the env block:

"env": {
  "GSC_OAUTH_CLIENT_SECRETS_FILE": "/path/to/client_secrets.json",
  "CRUX_API_KEY": "your-google-api-key",
  "PAGESPEED_API_KEY": "your-google-api-key"
}

You can also set GOOGLE_API_KEY; the server uses it as the PageSpeed Insights fallback key.

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Environment Variables

Variable	Required	Default	Description
GSC_OAUTH_CLIENT_SECRETS_FILE	OAuth	client_secrets.json	Path to OAuth client secrets
GSC_CREDENTIALS_PATH	Service account	service_account_credentials.json	Path to service account key
GSC_SKIP_OAUTH	No	false	Set to true to skip OAuth and use service account only
GSC_DATA_STATE	No	all	all = fresh data matching GSC dashboard, final = confirmed data (2-3 day lag)
CRUX_API_KEY	No	none	Google API key for Core Web Vitals (CrUX)
PAGESPEED_API_KEY	No	none	Google API key for PageSpeed Insights / Lighthouse API calls
GOOGLE_API_KEY	No	none	Fallback source for PAGESPEED_API_KEY
LIGHTHOUSE_CHROME_PATH	No	auto-detect	Optional explicit path to Chrome/Chromium for local Lighthouse CLI
SEO_AUDIT_ENABLE_WRITE_TOOLS	No	false	Enables mutating tools such as adding/removing GSC properties, sitemap submission/deletion, and Indexing API publish calls
SEO_AUDIT_ALLOW_PRIVATE_URLS	No	false	Allows live audit fetches against localhost/private/reserved IPs; keep disabled except trusted local testing
SEO_AUDIT_MAX_FETCH_BYTES	No	5242880	Maximum bytes read from a fetched page, robots.txt, or sitemap response
SEO_AUDIT_MAX_REDIRECTS	No	5	Maximum redirects followed by live audit fetches
SEO_AUDIT_MAX_SITEMAP_URLS	No	50000	Maximum sitemap URLs parsed from one sitemap document
SEO_AUDIT_MAX_CRAWL_PAGES	No	100	Hard upper bound for crawl_site_seo and audit_live_site crawls
LIGHTHOUSE_BINARY	No	auto-detect	Explicit Lighthouse executable path. Preferred over npx for repeatable audits
SEO_AUDIT_ALLOW_NPX_LIGHTHOUSE	No	false	Allows npx --yes lighthouse fallback when no local Lighthouse binary is available
LIGHTHOUSE_NO_SANDBOX	No	false	Adds Chrome --no-sandbox; use only in constrained containers that require it

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Example Prompts

"List my GSC properties"
"Show search analytics for cdljobscenter.com last 28 days"
"Find striking distance keywords for my site"
"Detect keyword cannibalization"
"Run a full site audit"
"Check Core Web Vitals for cdljobscenter.com"
"Run PageSpeed Insights for https://example.com"
"Run a local Lighthouse audit for https://example.com"
"Inspect robots.txt for https://example.com"
"Analyze https://example.com/sitemap.xml"
"Analyze on-page SEO for https://example.com/jobs"
"Crawl https://example.com and report duplicate titles"
"Run a live SEO audit for https://example.com"
"Inspect indexing status of these URLs: /jobs, /companies, /pricing"
"Request indexing for https://mysite.com/new-page"
"Compare search performance this month vs last month"

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Tests

96 tests covering all 30 tools with mocked Google/API/web-audit calls:

# Activate venv first
python -m pytest test_gsc_server.py -v

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What Changed From the Original

• 30 tools — added PSI, local Lighthouse, robots.txt inspection, sitemap validation, page SEO analysis, crawl audits, and live site audits
• Robustness fixes — OAuth scope alignment, sort direction mapping, origin/URL detection, sitemap BOM and plain-text handling, external redirect crawl guards, empty rows handling, API key redaction, service caching, and stale cache handling on reauth
• 96-test QA suite — coverage for GSC, CrUX, PSI, Lighthouse CLI, fallback behavior, robots, sitemaps, crawl audits, safety gates, auth scopes, and live-audit composition
• Security — private/local network fetches blocked by default, mutating Google tools gated behind an explicit env flag, and API keys redacted from error messages
• Performance — Google API service objects cached, async sleep instead of blocking, async CrUX HTTP calls, PSI-to-Lighthouse fallback, plus lab-performance tooling on top of CrUX field data
• Audit quality — local-preview aware canonical warnings, visible-content parsing that ignores noscript duplicates, severity-ranked SEO findings, image alt audits, crawlable-link checks, invalid JSON-LD detection, viewport/lang checks, and stricter canonical/robots diagnostics

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License

MIT. See LICENSE.

Based on AminForou/mcp-gsc.