apply_osd_preset · Betaflight MCP Server MCP: Risk & Policy

WHAT IT DOES

What apply_osd_preset does on Betaflight MCP Server

AI agents use apply_osd_preset 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 apply_osd_preset needs a policy

This tool creates or modifies configuration data on a drone flight controller. While the changes are reversible (can apply another preset), they affect the drone's operational display settings.

From the tool's definition Tool modifies OSD (On-Screen Display) layout configuration on a flight controller by applying a preset. The word 'apply' combined with 'preset' indicates configuration changes that are reversible by applying a different preset or restoring from backup.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apply_osd_preset Rate-limited

apply_osd_preset 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": {
    "apply_osd_preset": {
      "limits": [
        {
          "counter": "apply_osd_preset_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 apply_osd_preset

What does the apply_osd_preset tool do? +

Apply a predefined OSD layout preset. 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 apply_osd_preset? +

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

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

Can I rate-limit apply_osd_preset? +

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

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

apply_osd_preset 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.