streamfog_toggle_avatar · Streamfog MCP: Risk & Policy

WHAT IT DOES

What streamfog_toggle_avatar does on Streamfog MCP

AI agents invoke streamfog_toggle_avatar to trigger actions in Streamfog MCP. 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 streamfog_toggle_avatar needs a policy

Based on the tool name, this likely toggles a VTuber avatar on/off in an OBS stream, which constitutes triggering an external operation (changing live stream appearance via the Streamer.bot WebSocket bridge). The empty description lowers confidence. Toggling an avatar is a reversible state change affecting a live stream, placing it in Execute rather than Write since it triggers an external system action.

From the tool's definition Tool name 'streamfog_toggle_avatar' — description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

streamfog_toggle_avatar Rate-limited

streamfog_toggle_avatar 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": {
    "streamfog_toggle_avatar": {
      "limits": [
        {
          "counter": "streamfog_toggle_avatar_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 Streamfog MCP, so you can run agents against it safely.

FAQ

Questions about streamfog_toggle_avatar

What does the streamfog_toggle_avatar tool do? +

streamfog_toggle_avatar. It is categorised as a Execute tool in the Streamfog MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on streamfog_toggle_avatar? +

Register the Streamfog MCP server in PolicyLayer and add a rule for streamfog_toggle_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 Streamfog MCP. Nothing to install.

What risk level is streamfog_toggle_avatar? +

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

Can I rate-limit streamfog_toggle_avatar? +

Yes. Add a rate_limit block to the streamfog_toggle_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 streamfog_toggle_avatar completely? +

Set action: deny in the PolicyLayer policy for streamfog_toggle_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 streamfog_toggle_avatar? +

streamfog_toggle_avatar is provided by the Streamfog MCP server (sandraschi/streamfog-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.