body_create
Add a physics body node under a parent in the edited scene (undoable): a StaticBody, RigidBody, CharacterBody, or Area, in 2D or 3D. In-scene and undoable — not gated. Attach collision shapes with collisionshape_add.
This record as markdown: /tools/godot-breakpoint-mcp/body-create.md
What body_create does on Godot Breakpoint
AI agents use body_create to create or update resources in Godot Breakpoint, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Godot Breakpoint environment.
Why body_create is rated Medium
This tool creates and modifies scene structure by adding physics body nodes, which is a Write operation (reversible creation/modification). Although the description says 'undoable', the operation fundamentally alters the edited scene. Severity is medium because an AI agent could add many unintended physics bodies that clutter or break scene functionality, but the change can be reverted via the undo system.
From the tool's definition Tool description states 'Add a physics body node' and explicitly notes it is 'undoable', indicating reversible modification of scene structure. The tool creates new nodes in the Godot editor scene.
Attacks that exploit this kind of access
The rule that runs body_create safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Godot Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For body_create, this is the rule to start with:
body_create 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 Breakpoint, apply this rule, and every body_create call is checked against it from then on.
Questions about body_create
Add a physics body node under a parent in the edited scene (undoable): a StaticBody, RigidBody, CharacterBody, or Area, in 2D or 3D. In-scene and undoable — not gated. Attach collision shapes with collisionshape_add. It is categorised as a Write tool in the Godot Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Godot Breakpoint MCP server in PolicyLayer and add a rule for body_create: 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 Breakpoint. Nothing to install.
body_create 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 body_create 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 body_create. 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.
body_create is provided by the Godot Breakpoint MCP server (jlivingston-Cipher/godot-breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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