gemini_resume · Gemini CLI MCP Server MCP: Risk & Policy

WHAT IT DOES

What gemini_resume does on Gemini CLI MCP Server

AI agents invoke gemini_resume to trigger actions in Gemini CLI MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why gemini_resume needs a policy

Resuming a CLI session reactivates a prior interactive context, potentially triggering follow-up operations or continuations of previous commands. This is an execution-class action since it re-engages a CLI process whose effects depend on the prior session's state.

From the tool's definition Resume a previous Gemini CLI session

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gemini_resume Rate-limited

gemini_resume stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "gemini_resume": {
      "limits": [
        {
          "counter": "gemini_resume_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Gemini CLI MCP Server, so you can run agents against it safely.

FAQ

Questions about gemini_resume

What does the gemini_resume tool do? +

Resume a previous Gemini CLI session. It is categorised as a Execute tool in the Gemini CLI MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on gemini_resume? +

Register the Gemini CLI MCP Server MCP server in PolicyLayer and add a rule for gemini_resume: 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 Gemini CLI MCP Server. Nothing to install.

What risk level is gemini_resume? +

gemini_resume is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit gemini_resume? +

Yes. Add a rate_limit block to the gemini_resume 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.

How do I block gemini_resume completely? +

Set action: deny in the PolicyLayer policy for gemini_resume. 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.

What MCP server provides gemini_resume? +

gemini_resume is provided by the Gemini CLI MCP Server MCP server (wminson/gemini_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.