treehouse_create · Treehouse Worktree MCP: Risk & Policy

WHAT IT DOES

What treehouse_create does on Treehouse Worktree

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

WHY IT NEEDS A POLICY

Why treehouse_create needs a policy

This tool creates new git worktrees, which are reversible modifications to the repository structure (they can be removed with treehouse_remove). The ability to lock worktrees for exclusive agent use introduces coordination concerns, but the core action is creating data structures, not executing arbitrary code or irreversibly destroying data.

From the tool's definition Tool name 'treehouse_create' and description 'Create a new worktree for parallel development. Optionally lock it for an agent.' - creates new git worktree structures and can lock them for exclusive use.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

treehouse_create Rate-limited

treehouse_create 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": {
    "treehouse_create": {
      "limits": [
        {
          "counter": "treehouse_create_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 Treehouse Worktree, so you can run agents against it safely.

FAQ

Questions about treehouse_create

What does the treehouse_create tool do? +

Create a new worktree for parallel development. Optionally lock it for an agent. It is categorised as a Write tool in the Treehouse Worktree MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on treehouse_create? +

Register the Treehouse Worktree MCP server in PolicyLayer and add a rule for treehouse_create: 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 Treehouse Worktree. Nothing to install.

What risk level is treehouse_create? +

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

Can I rate-limit treehouse_create? +

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

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

treehouse_create is provided by the Treehouse Worktree MCP server (mark-hingston/treehouse-worktree). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.