set_timer · Betaflight MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_timer does on Betaflight MCP Server

AI agents use set_timer 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_timer needs a policy

This tool creates or modifies drone timer configuration settings (a flight control parameter) without permanently destroying data. Timer configuration changes are reversible and can be undone by reconfiguration or restoring a backup. While drone configuration errors could affect flight safety, the tool itself is a Write operation as it configures a parameter.

From the tool's definition Tool name 'set_timer' and description 'Configurar un timer' (Configure a timer) indicates a configuration modification operation on a drone flight controller. The tool modifies timer settings which are reversible flight controller parameters.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_timer Rate-limited

set_timer 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_timer": {
      "limits": [
        {
          "counter": "set_timer_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 Betaflight MCP Server, so you can run agents against it safely.

FAQ

Questions about set_timer

What does the set_timer tool do? +

Configurar un timer. 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_timer? +

Register the Betaflight MCP Server MCP server in PolicyLayer and add a rule for set_timer: 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_timer? +

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

Can I rate-limit set_timer? +

Yes. Add a rate_limit block to the set_timer 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_timer completely? +

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

set_timer 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.