Execute Python code via Gemini sandbox
Risk signalsRuns arbitrary Python code remotely
Part of the MCP Gemini server.
Free to start. No card required.
AI agents invoke gemini_run_code to trigger processes or run actions in MCP Gemini. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
gemini_run_code can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"gemini_run_code": {
"limits": [
{
"counter": "gemini_run_code_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full MCP Gemini policy for all 41 tools.
These attack patterns abuse exactly the kind of access gemini_run_code gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Execute Python code via Gemini sandbox. It is categorised as a Execute tool in the MCP Gemini MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the MCP Gemini MCP server in PolicyLayer and add a rule for gemini_run_code: 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 MCP Gemini. Nothing to install.
gemini_run_code is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the gemini_run_code 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 gemini_run_code. 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.
gemini_run_code is provided by the MCP Gemini MCP server (mcp-gemini-crunchtools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 41 MCP Gemini tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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