This record as markdown: /tools/chanceflow-godot-mcp/node-add-to-group.md
What node_add_to_group does on Godot
AI agents use node_add_to_group to create or update resources in Godot, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Godot environment.
Why node_add_to_group is rated Medium
The tool performs a reversible modification operation (adding a node to a group), which is characteristic of Write operations. While it manipulates scene structure, the action is not destructive and can be undone. Without a detailed description, confidence is moderate but sufficient to classify as Write rather than Execute, as it appears to be a direct object manipulation rather than arbitrary code execution.
From the tool's definition Tool name 'node_add_to_group' indicates adding a node to a group, which modifies scene state in Godot. Description is empty, reducing confidence.
Attacks that exploit this kind of access
The rule that runs node_add_to_group safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Godot, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For node_add_to_group, this is the rule to start with:
node_add_to_group stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Godot, apply this rule, and every node_add_to_group call is checked against it from then on.
Questions about node_add_to_group
node_add_to_group is a write tool on the Godot MCP server. It is categorised as a Write tool in the Godot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Godot MCP server in PolicyLayer and add a rule for node_add_to_group: 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 Godot. Nothing to install.
node_add_to_group is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the node_add_to_group 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 node_add_to_group. 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.
node_add_to_group is provided by the Godot MCP server (chanceflow/godot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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