Google Custom Search MCP Server
Google Custom Search Engine (CSE) MCP server enabling AI agents to perform Google searches — querying the Google Custom Search API for web results, retrieving structured search result data with titles, URLs, and snippets, and integrating Google's search index into agent-driven research and information retrieval workflows.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
HTTPS enforced. API key restricted to CSE API. GDPR. Community MCP. Store key as env var.
⚡ Reliability
Best When
An agent needs raw Google Search results with structured metadata — titles, URLs, snippets — via the official Google API rather than scraping.
Avoid When
You need AI-synthesized answers or have high search volume — Serper may be cheaper for bulk search queries.
Use Cases
- • Searching the web via Google from research agents
- • Retrieving structured search results with metadata from data agents
- • Searching specific websites or domains via Custom Search Engine config
- • Validating URLs and finding current content from fact-checking agents
- • Building search-augmented workflows from RAG agents
- • Finding documentation and references from coding assistant agents
Not For
- • AI-synthesized answers (raw search results only; use Perplexity for synthesis)
- • Image search without CSE configuration for image results
- • Teams preferring Brave Search or Serper for simpler pricing
Interface
Authentication
Google API key and Custom Search Engine ID (cx parameter) required. Both obtained from Google Cloud Console. Free tier: 100 queries/day; paid: $5/1,000 queries.
Pricing
100 free queries/day without credit card. Beyond that, $5/1,000 queries billed via Google Cloud. Must set up Custom Search Engine at programmablesearchengine.google.com.
Agent Metadata
Known Gotchas
- ⚠ Requires both an API key AND a Custom Search Engine ID (cx) — two values to configure
- ⚠ Free tier is only 100 queries/day — easy to exhaust in automated agent workflows
- ⚠ Custom Search Engine must be configured before use — can be set to search entire web
- ⚠ Results max at 10 per page, 100 results total per query
- ⚠ Community MCP — not official Google MCP; verify it uses CSE API correctly
- ⚠ Google API key should be restricted to Custom Search API only in Cloud Console
Alternatives
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Scores are editorial opinions as of 2026-03-06.