This record as markdown: /tools/keeveeg-godot-mcp/add-gridmap.md
What add_gridmap does on Godot
AI agents use add_gridmap 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.
| Parameter | Type | Required | Description |
|---|---|---|---|
parent | string | Yes | Parent node path. Use '' (empty string) to add at scene root, or a node name/path (e.g. 'Player' or 'Player/Sprites') to add as a child of that node. |
properties | object | — | GridMap properties (mesh_library_path, cell_size, etc.) |
Parameters from the server's own tool schema.
Why add_gridmap is rated Medium
This tool creates a new GridMap node within a Godot project, which is a reversible modification to the project structure. It does not execute arbitrary code, delete data, or move money. While it modifies the project state, the action can be undone in Godot's undo/redo system, making it a Write-category tool rather than Execute or Destructive.
From the tool's definition Tool name 'add_gridmap' and description 'Add a GridMap node for 3D tile-based level design' indicate creation of a new scene node in the Godot game engine. The verb 'Add' and context of adding a node to a project are consistent with Write operations.
Attacks that exploit this kind of access
The rule that runs add_gridmap 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 add_gridmap, this is the rule to start with:
add_gridmap 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 add_gridmap call is checked against it from then on.
Questions about add_gridmap
Add a GridMap node for 3D tile-based level design. 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.
add_gridmap accepts 2 parameters: parent, properties. Required: parent. The full parameter table on this page comes from the server's own tool schema.
Register the Godot MCP server in PolicyLayer and add a rule for add_gridmap: 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.
add_gridmap 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 add_gridmap 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 add_gridmap. 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.
add_gridmap is provided by the Godot MCP server (@keeveeg/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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