unity_terrain_set_heights_region

Set heights for a rectangular region of the heightmap. Heights are normalized 0-1.

SERVERUnity MCP Server SOURCEanklebreaker-studio/unity-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/anklebreaker-studio-unity-mcp-server/unity-terrain-set-heights-region.md

WHAT IT DOES

What unity_terrain_set_heights_region does on Unity MCP Server

AI agents use unity_terrain_set_heights_region 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.

RISK

Why unity_terrain_set_heights_region is rated Medium

This tool modifies terrain heightmap data within a defined rectangular region. While it changes existing data (heightmap values), the modification is reversible—heights can be adjusted again to previous values or undone via version control/undo systems within Unity. It does not permanently delete or destroy data, nor does it execute arbitrary code or perform financial transactions.

From the tool's definition Tool name 'unity_terrain_set_heights_region' combined with description 'Set heights for a rectangular region of the heightmap' indicates modification of terrain data. Heights are being written/updated to a specific region, making this a Write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unity_terrain_set_heights_region safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Unity MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For unity_terrain_set_heights_region, this is the rule to start with:

unity_terrain_set_heights_region Rate-limited

unity_terrain_set_heights_region 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "unity_terrain_set_heights_region": {
      "limits": [
        {
          "counter": "unity_terrain_set_heights_region_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Unity MCP Server, apply this rule, and every unity_terrain_set_heights_region call is checked against it from then on.

FAQ

Questions about unity_terrain_set_heights_region

What does the unity_terrain_set_heights_region tool do? +

Set heights for a rectangular region of the heightmap. Heights are normalized 0-1. 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.

How do I enforce a policy on unity_terrain_set_heights_region? +

Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_terrain_set_heights_region: 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.

What risk level is unity_terrain_set_heights_region? +

unity_terrain_set_heights_region is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit unity_terrain_set_heights_region? +

Yes. Add a rate_limit block to the unity_terrain_set_heights_region 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.

How do I block unity_terrain_set_heights_region completely? +

Set action: deny in the PolicyLayer policy for unity_terrain_set_heights_region. 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.

What MCP server provides unity_terrain_set_heights_region? +

unity_terrain_set_heights_region 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.

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