io.github.den-indance/google-trends-mcp

Google Trends MCP

The Google Trends MCP server that actually works under Google's anti-bot. Connect Claude to live Google Trends data — keyword interest, related queries, regional popularity.

Most Google Trends MCP packages crash with Unexpected token 'l' the moment Google blocks them (which is often). Free public proxy lists don't help — we tested 64 proxies from a popular "high-quality" list and 0 worked. This one uses your own rotating proxy with auto-retry, so blocked requests transparently retry on a fresh IP.

Built by Denys Malieiev.

Why this one

Quick Start

npx @den.dance/google-trends-mcp

Works out-of-the-box from non-flagged IPs, but Google rate-limits datacenter ranges aggressively. For reliable use, set up a proxy (see below).

Setup

1. Get a rotating proxy account

Recommended (all have free tiers / pay-per-GB):

• Webshare — free 1 GB residential (~46k Google Trends requests)
• IPRoyal — $1.75/GB, lowest price
• Smartproxy / Decodo — $4-7/GB, large pool
• Bright Data / Oxylabs — $5-8/GB, enterprise grade

Make sure the provider allows *.google.com in their ToS (most majors do).

2. Configure Claude Desktop

Edit your Claude Desktop config file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

Single rotating endpoint (recommended — provider rotates IPs internally):

{
  "mcpServers": {
    "google-trends": {
      "command": "npx",
      "args": ["@den.dance/google-trends-mcp"],
      "env": {
        "PROXY_URL": "http://USER:PASS@gate.smartproxy.com:7000"
      }
    }
  }
}

Or an explicit list (useful for Webshare-style per-port proxies):

{
  "mcpServers": {
    "google-trends": {
      "command": "npx",
      "args": ["@den.dance/google-trends-mcp"],
      "env": {
        "PROXY_LIST": "http://user:pass@host1:6114,http://user:pass@host2:6014,http://user:pass@host3:5863"
      }
    }
  }
}

For longer lists, put proxies in a file (one per line, # comments allowed) and point to it:

{
  "mcpServers": {
    "google-trends": {
      "command": "npx",
      "args": ["@den.dance/google-trends-mcp"],
      "env": {
        "PROXY_LIST_FILE": "/home/you/.config/google-trends/proxies.txt"
      }
    }
  }
}

# ~/.config/google-trends/proxies.txt
http://user:pass@host1:6114
http://user:pass@host2:6014
http://user:pass@host3:5863

chmod 600 the file — credentials live there. Run proxy_refresh from Claude to hot-reload after editing.

Restart Claude Desktop after saving the JSON config.

3. Configure Claude Code

claude mcp add google-trends \
  -e PROXY_URL="http://USER:PASS@gate.smartproxy.com:7000" \
  -- npx @den.dance/google-trends-mcp

Environment Variables

Priority: PROXY_URL > PROXY_LIST > PROXY_LIST_FILE. If none are set, requests go direct (no proxy) — works only from non-flagged IPs.

Tools

Data tools

• compare_keywords — search interest over time for up to 5 keywords. Returns a timeline of relative scores.
• get_related_queries — top + rising related queries for a keyword. Powered by Google's relatedQueries endpoint.
• get_interest_by_region — top 20 regions by interest in a keyword.

Admin tools

• proxy_status — show source (single / env-list / env-file / none / disabled), working count, age, freshness, validation progress.
• proxy_refresh — force re-validation of the current proxy source. No-op in PROXY_URL mode.

Intentionally not exposed

• get_trending_searches (daily / real-time trends) — Google blocks these endpoints aggressively. Even with residential proxies the success rate is too low to ship. We'd rather not lie about it.

Known limitations

• Google sometimes blocks multi-keyword requests (2 or 4 keywords) more aggressively than single. Our auto-retry handles this — but if all 3 attempts hit blocks, the request fails. Increase MAX_ATTEMPTS in trends-client.js if you need higher tolerance.
• The underlying google-trends-api library scrapes Google's internal endpoints, which are undocumented and can change. If the library breaks, this MCP breaks too.
• For very heavy use (>10k req/day) consider a managed service like SerpAPI or DataForSEO — at that scale the price difference vs your own proxy is marginal and the operational burden disappears.

Example prompts for Claude

• "Compare search interest for 'claude ai', 'chatgpt', and 'gemini' over the last 12 months"
• "What are people searching for related to 'sourdough bread'?"
• "Which regions have highest interest in 'electric vehicle'?"
• "Show me the proxy pool status"

Architecture notes

• ~450 lines total across server.js (MCP handlers), proxy-manager.js (pool/cache), trends-client.js (retry logic with DI)
• Validation: parallel workers (concurrency 50) check each proxy against trends.google.com/api/autocomplete/test, looking for the anti-XSSI prefix )]}' in the response
• Cache: working proxies persisted to proxies.json (gitignored), keyed by SHA1 of input list — automatically invalidated when source changes
• TTL: 4 hours; background re-validation when cache is stale
• Fail tracking: proxies drop from rotation after 3 failures per session
• Retry: every tool call retries up to 3 times with fresh getAgent() on HTML response or exception

Development

Tests

# Unit only (fast, offline, no network)
npm test

# With coverage report (html in coverage/)
npm run test:coverage

# Integration (real Google hit, gated)
RUN_INTEGRATION=1 npm run test:integration

# E2E (spawns server.js, JSON-RPC over stdio)
RUN_E2E=1 npm run test:e2e

# Everything
npm run test:all

Project structure

• server.js — MCP server entrypoint (stdio transport)
• trends-client.js — Google Trends API wrapper with retry-on-HTML
• proxy-manager.js — proxy pool, validation, cache, source priority
• tests/unit/ — pure unit tests, no network (~40 tests, runs in ~2s)
• tests/integration/ — real Google endpoint tests (gated by RUN_INTEGRATION=1)
• tests/e2e/ — full MCP protocol tests via spawn (gated by RUN_E2E=1)

Security

• Never commit proxy credentials to version control. Use PROXY_LIST_FILE pointing to a chmod 600 file outside the repo, or your secrets manager
• proxies.json cache (built from validated proxies) is gitignored and never published — re-generated on first run after install

License

MIT