AI agents call list_materials to retrieve information from Godot without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
path | object | — | Subdirectory to search (default: root) |
recursive | object | — | Search recursively (default: true) |
type_filter | object | — | Filter by material type (e.g. "StandardMaterial3D") |
Parameters from the server's own tool schema.
This tool retrieves and displays materials from the Godot engine without creating, modifying, or deleting data. It is a read-only operation that has no side effects, making it a Read category risk with low severity.
From the tool's definition Tool name 'list_materials' and description 'List materials grouped by type' indicate a query/retrieval operation with no modifications.
Risk signalsAccepts file system path (path)
Attacks that exploit this kind of access
List materials grouped by type. It is categorised as a Read tool in the Godot MCP Server, which means it retrieves data without modifying state.
list_materials accepts 3 parameters: path, recursive, type_filter. 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 list_materials: 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.
list_materials is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_materials 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 list_materials. 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.
list_materials 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.
list_materials is one line of Godot's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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