unity_undo_last

SERVERUnity MCP Server SOURCEanklebreaker-studio/unity-mcp-server

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/anklebreaker-studio-unity-mcp-server/unity-undo-last.md

WHAT IT DOES

What unity_undo_last does on Unity MCP Server

AI agents invoke unity_undo_last to trigger actions in Unity MCP Server. 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.

RISK

Why unity_undo_last is rated High

unity_undo_last 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.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs unity_undo_last safely

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

unity_undo_last Rate-limited

unity_undo_last 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": {
    "unity_undo_last": {
      "limits": [
        {
          "counter": "unity_undo_last_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Unity MCP Server, apply this rule, and every unity_undo_last call is checked against it from then on.

FAQ

Questions about unity_undo_last

What does the unity_undo_last tool do? +

Revert the latest verified MCP Undo group, optionally by agentId. Newer MCP/native groups require force:true. Only Unity-registered changes are covered; this revert creates no Redo step. Use unity_undo for normal Undo/Redo. Reads and execute-code are not targets. It is categorised as a Execute tool in the Unity MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on unity_undo_last? +

Register the Unity MCP Server MCP server in PolicyLayer and add a rule for unity_undo_last: 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 Unity MCP Server. Nothing to install.

What risk level is unity_undo_last? +

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

Can I rate-limit unity_undo_last? +

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

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

unity_undo_last is provided by the Unity MCP Server MCP server (anklebreaker-studio/unity-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Unity MCP Server, and thousands of servers like it.

This server

All 339 Unity MCP Server tools → High-risk tools on this server →

Across the catalogue

All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →