set_vtx_power · Betaflight MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_vtx_power does on Betaflight MCP Server

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

WHY IT NEEDS A POLICY

Why set_vtx_power needs a policy

This falls under Write rather than Execute because it modifies a discrete configuration parameter rather than triggering an external operation with unpredictable effects. The change is reversible and does not permanently destroy data or system state.

From the tool's definition Tool modifies VTX (Video Transmitter) power level setting on the drone flight controller. The name 'set_vtx_power' and description 'Change VTX power level' indicate a configuration change that is reversible—the power level can be adjusted up or down by…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_vtx_power Rate-limited

set_vtx_power 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": {
    "set_vtx_power": {
      "limits": [
        {
          "counter": "set_vtx_power_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Betaflight MCP Server, so you can run agents against it safely.

FAQ

Questions about set_vtx_power

What does the set_vtx_power tool do? +

Change VTX power level. It is categorised as a Write tool in the Betaflight 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 set_vtx_power? +

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

What risk level is set_vtx_power? +

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

Can I rate-limit set_vtx_power? +

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

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

set_vtx_power is provided by the Betaflight MCP Server MCP server (jir13/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.