photoshop_undo · Photoshop MCP Windows-First MCP

WHAT IT DOES

What photoshop_undo does on Photoshop MCP Windows-First

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

WHY IT NEEDS A POLICY

Why photoshop_undo needs a policy

Undo modifies the active Photoshop document by reverting applied edits, making it a Write action. The severity is medium because misuse would affect image content but is easily reversible and has limited blast radius.

From the tool's definition Tool name is 'photoshop_undo' and description states 'Undo the last operation(s) - equivalent to Ctrl/Cmd+Z'. While undo reverses an operation, it is fundamentally a write-class action that modifies document state by changing what has been applied.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

photoshop_undo Rate-limited

photoshop_undo 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": {
    "photoshop_undo": {
      "limits": [
        {
          "counter": "photoshop_undo_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 Photoshop MCP Windows-First, so you can run agents against it safely.

FAQ

Questions about photoshop_undo

What does the photoshop_undo tool do? +

Undo the last operation(s) - equivalent to Ctrl/Cmd+Z. It is categorised as a Write tool in the Photoshop MCP Windows-First MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on photoshop_undo? +

Register the Photoshop MCP Windows-First MCP server in PolicyLayer and add a rule for photoshop_undo: 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 Photoshop MCP Windows-First. Nothing to install.

What risk level is photoshop_undo? +

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

Can I rate-limit photoshop_undo? +

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

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

photoshop_undo is provided by the Photoshop MCP Windows-First MCP server (rookietopred02-gif/photoshop-mcp-windows-first). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.