This record as markdown: /tools/yanhuifair-godot-mcp/set-light-2d-param.md
What set_light_2d_param does on Godot
AI agents use set_light_2d_param 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 |
|---|---|---|---|
param | string | Yes | |
value | string | Yes | |
light_name | string | Yes | |
scene_path | string | Yes |
Parameters from the server's own tool schema.
Why set_light_2d_param is rated Medium
This tool modifies properties of a 2D light node in the Godot scene, which is a reversible write operation. It does not execute arbitrary code, delete data, or cause financial impact. It affects only the visual/rendering configuration of a light node, making it a straightforward Write category with low severity—misuse would affect only that specific node's properties and could be easily undone.
From the tool's definition Tool name 'set_light_2d_param' combined with description 'Set a parameter on a 2D light node' indicates modification of node properties. The verb 'Set' and action of changing a parameter confirms this is a write operation on game engine scene data.
Attacks that exploit this kind of access
The rule that runs set_light_2d_param 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 set_light_2d_param, this is the rule to start with:
set_light_2d_param 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 set_light_2d_param call is checked against it from then on.
Questions about set_light_2d_param
Set a parameter on a 2D light node. 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.
set_light_2d_param accepts 4 parameters: param, value, light_name, scene_path. Required: param, value, light_name, scene_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 set_light_2d_param: 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.
set_light_2d_param 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 set_light_2d_param 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 set_light_2d_param. 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.
set_light_2d_param 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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