animation_preview · UI/UX MCP Server MCP: Risk & Policy

WHAT IT DOES

What animation_preview does on UI/UX MCP Server

AI agents invoke animation_preview to trigger actions in UI/UX 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.

WHY IT NEEDS A POLICY

Why animation_preview needs a policy

Generating an animation preview implies executing/running an animation sequence to produce output, likely involving rendering or browser automation. This goes beyond a simple read/query and involves triggering an external operation. Severity is medium as misuse could produce unwanted outputs or consume resources, but the blast radius is limited.

From the tool's definition Generate preview of animation sequence

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

animation_preview Rate-limited

animation_preview 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": {
    "animation_preview": {
      "limits": [
        {
          "counter": "animation_preview_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 UI/UX MCP Server, so you can run agents against it safely.

FAQ

Questions about animation_preview

What does the animation_preview tool do? +

Generate preview of animation sequence. It is categorised as a Execute tool in the UI/UX 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 animation_preview? +

Register the UI/UX MCP Server MCP server in PolicyLayer and add a rule for animation_preview: 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 UI/UX MCP Server. Nothing to install.

What risk level is animation_preview? +

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

Can I rate-limit animation_preview? +

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

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

animation_preview is provided by the UI/UX MCP Server MCP server (willem4130/ui-ux-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.