select_avatar · BotUyo MCP Server MCP: Risk & Policy

WHAT IT DOES

What select_avatar does on BotUyo MCP Server

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

WHY IT NEEDS A POLICY

Why select_avatar needs a policy

This tool creates or modifies agent metadata (the avatar property) in a reversible manner. Selecting a different avatar or updating the avatar reference is a write operation that changes agent state but does not execute arbitrary code, delete data irreversibly, or trigger financial actions.

From the tool's definition Tool description states 'Selecciona un avatar 3D para un agente' (Selects a 3D avatar for an agent), indicating it modifies agent configuration by setting/updating an avatar attribute.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

select_avatar Rate-limited

select_avatar 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": {
    "select_avatar": {
      "limits": [
        {
          "counter": "select_avatar_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 BotUyo MCP Server, so you can run agents against it safely.

FAQ

Questions about select_avatar

What does the select_avatar tool do? +

Selecciona un avatar 3D para un agente. Puede ser del catálogo (por ID) o una URL custom (.glb/.vrm). It is categorised as a Write tool in the BotUyo MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on select_avatar? +

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

What risk level is select_avatar? +

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

Can I rate-limit select_avatar? +

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

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

select_avatar is provided by the BotUyo MCP Server MCP server (marcoar1/botuyo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.