adjust_local_spot · Rawtherapee MCP: Risk & Policy

WHAT IT DOES

What adjust_local_spot does on Rawtherapee

AI agents use adjust_local_spot 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 adjust_local_spot needs a policy

This tool creates or modifies image processing parameters within a RAW photo development profile in a reversible manner. It does not execute arbitrary code, delete data, or cause financial impact. The modification of spot adjustment parameters in a photo editing profile is a typical Write operation—changes can be undone, reverted, or overwritten.

From the tool's definition The tool modifies parameters of an existing Locallab spot in a PP3 profile, as indicated by 'Modify parameters' in the description. PP3 files are RawTherapee project settings that are reversibly editable.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

adjust_local_spot Rate-limited

adjust_local_spot 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": {
    "adjust_local_spot": {
      "limits": [
        {
          "counter": "adjust_local_spot_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 adjust_local_spot

What does the adjust_local_spot tool do? +

Modify parameters of an existing Locallab spot in a PP3 profile. 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 adjust_local_spot? +

Register the Rawtherapee MCP server in PolicyLayer and add a rule for adjust_local_spot: 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 adjust_local_spot? +

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

Can I rate-limit adjust_local_spot? +

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

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

adjust_local_spot 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.