task_launch · Semaphore MCP: Risk & Policy

WHAT IT DOES

What task_launch does on Semaphore

AI agents invoke task_launch to trigger actions in Semaphore. 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 task_launch needs a policy

The tool executes automation workflows (Ansible, Terraform) whose effects are determined by the task definition and arguments. This falls under Execute rather than Write because it triggers active operations with side effects external to the MCP server itself, and the outcome cannot be predicted without knowing the task content.

From the tool's definition Tool name is 'task_launch' on a server that manages 'Ansible, Terraform, and other automation workflows.' Launching a task in this context means triggering execution of automation workflows (Ansible playbooks, Terraform plans, etc.), which run code and…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

task_launch Rate-limited

task_launch 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": {
    "task_launch": {
      "limits": [
        {
          "counter": "task_launch_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 Semaphore, so you can run agents against it safely.

FAQ

Questions about task_launch

What does the task_launch tool do? +

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

How do I enforce a policy on task_launch? +

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

What risk level is task_launch? +

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

Can I rate-limit task_launch? +

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

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

task_launch is provided by the Semaphore MCP server (vitexsoftware/semaphore-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.