add_variable · Godot Mcp Pilot MCP: Risk & Policy

WHAT IT DOES

What add_variable does on Godot Mcp Pilot

AI agents use add_variable to create or update resources in Godot Mcp Pilot — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Godot Mcp Pilot environment.

WHY IT NEEDS A POLICY

Why add_variable needs a policy

Adding variable declarations to GDScript files is a reversible write operation that creates or extends script state. While it modifies code, the change can be undone (removed/edited), distinguishing it from destructive operations.

From the tool's definition Tool description states it "Add[s] a top-level variable or property declaration to a GDScript file," which creates new code constructs that modify the script.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_variable Rate-limited

add_variable 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": {
    "add_variable": {
      "limits": [
        {
          "counter": "add_variable_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Godot Mcp Pilot, so you can run agents against it safely.

FAQ

Questions about add_variable

What does the add_variable tool do? +

Add a top-level variable or property declaration to a GDScript file. It is categorised as a Write tool in the Godot Mcp Pilot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_variable? +

Register the Godot Mcp Pilot MCP server in PolicyLayer and add a rule for add_variable: 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 Mcp Pilot. Nothing to install.

What risk level is add_variable? +

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

Can I rate-limit add_variable? +

Yes. Add a rate_limit block to the add_variable 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 add_variable completely? +

Set action: deny in the PolicyLayer policy for add_variable. 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 add_variable? +

add_variable is provided by the Godot Mcp Pilot MCP server (pushks18/godot-mcp-pilot). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

add_variable is one line of Godot Mcp Pilot's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →