batch_process · Rawtherapee MCP: Risk & Policy

WHAT IT DOES

What batch_process does on Rawtherapee

AI agents invoke batch_process to trigger actions in Rawtherapee. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why batch_process needs a policy

This tool runs the RawTherapee CLI to process multiple RAW photo files, which constitutes executing an external operation. The blast radius is high because it operates on multiple files simultaneously, potentially overwriting or generating numerous output files. It is not Destructive in the irreversible-deletion sense, but it does execute batch external operations whose effects depend on the arguments provided.

From the tool's definition 'Process multiple RAW files with the same PP3 profile' — triggers RawTherapee CLI execution across multiple files

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

batch_process Rate-limited

batch_process stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "batch_process": {
      "limits": [
        {
          "counter": "batch_process_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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 batch_process

What does the batch_process tool do? +

Process multiple RAW files with the same PP3 profile. It is categorised as a Execute tool in the Rawtherapee MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on batch_process? +

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

batch_process is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit batch_process? +

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

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

batch_process 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.