type · ComputerMate MCP: Risk & Policy

WHAT IT DOES

What type does on ComputerMate

AI agents invoke type to trigger actions in ComputerMate. 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 type needs a policy

Typing text into a computer constitutes executing an external operation whose consequences depend on what is typed and where. In combination with other tools on this server (click, goto, keypress), this could be used to enter commands, fill forms, submit data, or interact with any application.

From the tool's definition 'Type the given text as keyboard input' — directly triggers keyboard input actions on a real or sandboxed computer, with effects entirely dependent on the context and arguments provided.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

type Rate-limited

type 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": {
    "type": {
      "limits": [
        {
          "counter": "type_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 ComputerMate, so you can run agents against it safely.

FAQ

Questions about type

What does the type tool do? +

Type the given text as keyboard input. It is categorised as a Execute tool in the ComputerMate MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on type? +

Register the ComputerMate MCP server in PolicyLayer and add a rule for type: 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 ComputerMate. Nothing to install.

What risk level is type? +

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

Can I rate-limit type? +

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

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

type is provided by the ComputerMate MCP server (one710/computermate). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.