TerminalOpen

SERVERDutyDeck SOURCEtaokoplay/DutyDeck

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/dutydeck/terminalopen.md

WHAT IT DOES

What TerminalOpen does on DutyDeck

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

RISK

Why TerminalOpen is rated Medium

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

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs TerminalOpen safely

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

TerminalOpen Rate-limited

TerminalOpen 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": {
    "TerminalOpen": {
      "limits": [
        {
          "counter": "terminalopen_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 DutyDeck, apply this rule, and every TerminalOpen call is checked against it from then on.

FAQ

Questions about TerminalOpen

What does the TerminalOpen tool do? +

Open a visible terminal Tab in the Agent right workspace. cwd controls the initial directory and must resolve within the current session’s authorized directories; it is not an OS sandbox. ${defaultShellBehavior} This tool opens an interactive terminal but does not run a command. It is categorised as a Write tool in the DutyDeck MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on TerminalOpen? +

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

What risk level is TerminalOpen? +

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

Can I rate-limit TerminalOpen? +

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

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

TerminalOpen is provided by the DutyDeck MCP server (taokoplay/DutyDeck). 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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