apply_patch · Godot Sentinel MCP: Risk & Policy

WHAT IT DOES

What apply_patch does on Godot Sentinel MCP

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

WHY IT NEEDS A POLICY

Why apply_patch needs a policy

This tool modifies code files by applying patches, making it a Write action rather than Read. It does not irreversibly delete data (so not Destructive), nor does it execute arbitrary code directly (so not Execute—though patches can contain significant changes).

From the tool's definition Tool applies a unified diff patch on a git branch, modifying file contents. The description confirms it performs patch application, which creates or modifies data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apply_patch Rate-limited

apply_patch 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": {
    "apply_patch": {
      "limits": [
        {
          "counter": "apply_patch_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 Sentinel MCP, so you can run agents against it safely.

FAQ

Questions about apply_patch

What does the apply_patch tool do? +

Apply a unified diff patch on a new git branch. It is categorised as a Write tool in the Godot Sentinel MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on apply_patch? +

Register the Godot Sentinel MCP server in PolicyLayer and add a rule for apply_patch: 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 Sentinel MCP. Nothing to install.

What risk level is apply_patch? +

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

Can I rate-limit apply_patch? +

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

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

apply_patch is provided by the Godot Sentinel MCP server (snack-jpg/godot-sentinel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.