computer_batch · Computer Use MCP Server MCP: Risk & Policy

WHAT IT DOES

What computer_batch does on Computer Use MCP Server

AI agents invoke computer_batch to trigger actions in Computer Use MCP Server. 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 computer_batch needs a policy

This tool allows execution of arbitrary sequences of desktop actions whose effects depend entirely on the arguments provided. An AI agent could use this to automate complex sequences of clicks, keystrokes, and window manipulations to exfiltrate data, manipulate applications, or perform other harmful operations.

From the tool's definition The tool executes a sequence of desktop automation actions (mouse, keyboard, window control, etc.) in a single call, as evidenced by its description 'Execute a sequence of actions in ONE tool call' and its context as part of a macOS desktop automation server…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

computer_batch Rate-limited

computer_batch 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": {
    "computer_batch": {
      "limits": [
        {
          "counter": "computer_batch_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 Computer Use MCP Server, so you can run agents against it safely.

FAQ

Questions about computer_batch

What does the computer_batch tool do? +

Execute a sequence of actions in ONE tool call. It is categorised as a Execute tool in the Computer Use MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on computer_batch? +

Register the Computer Use MCP Server MCP server in PolicyLayer and add a rule for computer_batch: 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 Computer Use MCP Server. Nothing to install.

What risk level is computer_batch? +

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

Can I rate-limit computer_batch? +

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

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

computer_batch is provided by the Computer Use MCP Server MCP server (syedazharmbnr1/computer-use-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.