Create a light probe group in the scene.
AI agents use unity_lighting_create_light_probe_group to create or update resources in Unity MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Unity MCP Server environment.
This tool creates a new light probe group asset in the scene, which is a reversible Write operation. It modifies the scene state by adding a new object, but the action can be undone (standard undo/redo in Unity). The severity is medium because incorrect light probe placement could impact rendering performance or visual quality across a scene, but the effect is limited to a single asset type and is easily reversible.
From the tool's definition Tool name 'unity_lighting_create_light_probe_group' and description 'Create a light probe group in the scene' indicate creation of a new game object/asset within a Unity scene.
Documented attack patterns abuse exactly the kind of access unity_lighting_create_light_probe_group gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Unity MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for unity_lighting_create_light_probe_group:
{
"version": "1",
"default": "deny",
"tools": {
"unity_lighting_create_light_probe_group": {
"limits": [
{
"counter": "unity_lighting_create_light_probe_group_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}unity_lighting_create_light_probe_group 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.
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Create a light probe group in the scene. It is categorised as a Write tool in the Unity MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_lighting_create_light_probe_group: 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 Unity MCP Server. Nothing to install.
unity_lighting_create_light_probe_group 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 unity_lighting_create_light_probe_group 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 unity_lighting_create_light_probe_group. 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.
unity_lighting_create_light_probe_group is provided by the Unity MCP Server MCP server (anklebreaker-studio/unity-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 324 Unity MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
324 Unity MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.