actor_show

Show previously hidden actors in the editor viewport.

SERVERUefn SOURCEquangdang46/uefn-verse-mcp

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/quangdang46-uefn-verse-mcp/actor-show.md

WHAT IT DOES

What actor_show does on Uefn

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

RISK

Why actor_show is rated Medium

This tool reverses a hidden state on actors, making them visible again in the editor. It modifies editor state (visibility) but is reversible (actors can be hidden again). No data is deleted, no code is executed, and no financial operations are involved. It's a Write operation with low severity since it only affects editor viewport visibility.

From the tool's definition Show previously hidden actors in the editor viewport

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs actor_show safely

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

actor_show Rate-limited

actor_show 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": {
    "actor_show": {
      "limits": [
        {
          "counter": "actor_show_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 Uefn, apply this rule, and every actor_show call is checked against it from then on.

FAQ

Questions about actor_show

What does the actor_show tool do? +

Show previously hidden actors in the editor viewport. It is categorised as a Write tool in the Uefn MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on actor_show? +

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

What risk level is actor_show? +

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

Can I rate-limit actor_show? +

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

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

actor_show is provided by the Uefn MCP server (quangdang46/uefn-verse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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