file-untrack

Server Jj jj-mcp-server

Category Execute

Risk class High

Parameters 00 required

WHAT IT DOES

What file-untrack does on Jj

AI agents invoke file-untrack to trigger actions in Jj. 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 file-untrack needs a policy

file-untrack triggers real processes with real consequences. An agent gone sideways doesn't fire it once — it starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

file-untrack Rate-limited

file-untrack 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": {
    "file-untrack": {
      "limits": [
        {
          "counter": "file-untrack_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 Jj, so you can run agents against it safely.

FAQ

Questions about file-untrack

What does the file-untrack tool do? +

Stop tracking specified paths in the working copy of a Jujutsu (jj) repository. The paths must already be ignored via .gitignore or other ignore rules. Parameters: paths (Paths to untrack), repoPath (Optional path to repo root or working directory), cwd (Optional working directory to run the command in). It is categorised as a Execute tool in the Jj MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on file-untrack? +

Register the Jj MCP server in PolicyLayer and add a rule for file-untrack: 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 Jj. Nothing to install.

What risk level is file-untrack? +

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

Can I rate-limit file-untrack? +

Yes. Add a rate_limit block to the file-untrack 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 file-untrack completely? +

Set action: deny in the PolicyLayer policy for file-untrack. 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 file-untrack? +

file-untrack is provided by the Jj MCP server (jj-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.