apply_local_preset · Rawtherapee MCP: Risk & Policy

WHAT IT DOES

What apply_local_preset does on Rawtherapee

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

WHY IT NEEDS A POLICY

Why apply_local_preset needs a policy

Based on the tool name and server context, 'apply_local_preset' likely applies a local editing preset to an image, which is a write/modify operation on photo development settings. Confidence is low due to the empty description.

From the tool's definition Tool name 'apply_local_preset' and empty description; sibling tools include 'add_device_preset_tool', 'adjust_local_spot', 'adjust_profile' suggesting preset/profile application to images

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apply_local_preset Rate-limited

apply_local_preset 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_local_preset": {
      "limits": [
        {
          "counter": "apply_local_preset_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 Rawtherapee, so you can run agents against it safely.

FAQ

Questions about apply_local_preset

What does the apply_local_preset tool do? +

apply_local_preset. It is categorised as a Write tool in the Rawtherapee 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_local_preset? +

Register the Rawtherapee MCP server in PolicyLayer and add a rule for apply_local_preset: 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 Rawtherapee. Nothing to install.

What risk level is apply_local_preset? +

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

Can I rate-limit apply_local_preset? +

Yes. Add a rate_limit block to the apply_local_preset 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_local_preset completely? +

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

apply_local_preset is provided by the Rawtherapee MCP server (lucamarien/rawtherapee-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.