create_physics_material
A write tool on the Godot MCP server.
This record as markdown: /tools/yanhuifair-godot-mcp/create-physics-material.md
What create_physics_material does on Godot
AI agents use create_physics_material 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 |
|---|---|---|---|
path | string | Yes | Output path (e.g. "physics/ice.tres") |
rough | object | — | Rough surface |
absorb | object | — | Absorbent mode |
bounce | object | — | Bounciness (0=none, 1=perfect) |
friction | object | — | Friction coefficient (0=ice, 1=rubber) |
Parameters from the server's own tool schema.
Why create_physics_material is rated Medium
This tool creates a new reversible asset within the Godot Engine project. While creation is a modification, it is not destructive—the material can be deleted or replaced. The severity is medium because misconfiguration of physics materials could cause game behavior issues, but the action itself is straightforward and reversible.
From the tool's definition Tool name is 'create_physics_material' and description states 'Create PhysicsMaterial.' The verb 'create' indicates the tool adds new data (a physics material asset) to the Godot project.
Risk signalsAccepts file system path (path)
Attacks that exploit this kind of access
The rule that runs create_physics_material 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 create_physics_material, this is the rule to start with:
create_physics_material 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 create_physics_material call is checked against it from then on.
Questions about create_physics_material
create_physics_material 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.
create_physics_material accepts 5 parameters: path, rough, absorb, bounce, friction. Required: path. 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 create_physics_material: 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.
create_physics_material 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 create_physics_material 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 create_physics_material. 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.
create_physics_material is provided by the Godot MCP server (@yanhuifair/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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