ユーザープロンプトを受け取り、Google検索を使用してAIから応答を生成します。
AI agents call call_google_search to retrieve information from Deno Gemini Grounding MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves search results from Google to ground AI responses in current information. It is a read-only operation that queries an external search service and returns results. There are no side effects, data modifications, code execution, or financial implications.
From the tool's definition Tool name 'call_google_search' and description indicate it performs web searches using Google Search API. The description states it 'receives user prompt' and 'generates response from AI' using 'Google search' — a retrieval operation with no data modification…
Attacks that exploit this kind of access
ユーザープロンプトを受け取り、Google検索を使用してAIから応答を生成します。. It is categorised as a Read tool in the Deno Gemini Grounding MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Deno Gemini Grounding MCP Server MCP server in PolicyLayer and add a rule for call_google_search: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Deno Gemini Grounding MCP Server. Nothing to install.
call_google_search is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the call_google_search rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for call_google_search. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
call_google_search is provided by the Deno Gemini Grounding MCP Server MCP server (rinerebox1/deno-gemini-grounding-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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