viewport_set_size

A write tool on the Godot MCP server.

SERVERGodot SOURCEchanceflow/godot-mcp

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/chanceflow-godot-mcp/viewport-set-size.md

WHAT IT DOES

What viewport_set_size does on Godot

AI agents use viewport_set_size 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.

RISK

Why viewport_set_size is rated Medium

This tool appears to modify viewport properties in an active Godot project, which is a reversible change to engine state. It does not delete data (not Destructive), execute arbitrary code (not Execute), move money (not Financial), or trigger external operations (not Execute). The modification of rendering configuration qualifies as Write.

From the tool's definition Tool name 'viewport_set_size' indicates modification of viewport dimensions in the Godot engine; the empty description prevents direct confirmation of side effects, but the 'set_' prefix and presence among sibling tools that modify engine state…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs viewport_set_size 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 viewport_set_size, this is the rule to start with:

viewport_set_size Rate-limited

viewport_set_size 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": {
    "viewport_set_size": {
      "limits": [
        {
          "counter": "viewport_set_size_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 Godot, apply this rule, and every viewport_set_size call is checked against it from then on.

FAQ

Questions about viewport_set_size

What does the viewport_set_size tool do? +

viewport_set_size is a write tool on the Godot MCP server. 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.

How do I enforce a policy on viewport_set_size? +

Register the Godot MCP server in PolicyLayer and add a rule for viewport_set_size: 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.

What risk level is viewport_set_size? +

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

Can I rate-limit viewport_set_size? +

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

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

viewport_set_size is provided by the Godot MCP server (chanceflow/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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