select_mask

Select an existing mask by its numeric ID.

SERVERLightroom Classic MCP SOURCE4xiomdev/lightroom-classic-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/4xiomdev-lightroom-classic-mcp/select-mask.md

WHAT IT DOES

What select_mask does on Lightroom Classic MCP

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

RISK

Why select_mask is rated Medium

An AI agent can call select_mask faster than any human can review: one bad instruction and it creates or modifies resources in Lightroom Classic MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs select_mask safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Lightroom Classic MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For select_mask, this is the rule to start with:

select_mask Rate-limited

select_mask 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": {
    "select_mask": {
      "limits": [
        {
          "counter": "select_mask_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 Lightroom Classic MCP, apply this rule, and every select_mask call is checked against it from then on.

FAQ

Questions about select_mask

What does the select_mask tool do? +

Select an existing mask by its numeric ID. It is categorised as a Write tool in the Lightroom Classic 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 select_mask? +

Register the Lightroom Classic MCP server in PolicyLayer and add a rule for select_mask: 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 Lightroom Classic MCP. Nothing to install.

What risk level is select_mask? +

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

Can I rate-limit select_mask? +

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

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

select_mask is provided by the Lightroom Classic MCP server (4xiomdev/lightroom-classic-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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