save_settings · Betaflight MCP Server MCP: Risk & Policy

WHAT IT DOES

What save_settings does on Betaflight MCP Server

AI agents use save_settings 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 save_settings needs a policy

This tool writes configuration data to EEPROM (persistent storage), making changes permanent and irreversible until overwritten. While not destructive in the sense of data deletion, it commits state changes to hardware. Given the drone control context, misconfigured settings could impact flight safety.

From the tool's definition Tool name 'save_settings' with description 'Save current settings to EEPROM' - persists configuration changes to non-volatile memory on a flight controller, modifying the drone's operational parameters.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

save_settings Rate-limited

save_settings 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": {
    "save_settings": {
      "limits": [
        {
          "counter": "save_settings_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 save_settings

What does the save_settings tool do? +

Save current settings to EEPROM. Call this after making changes. 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 save_settings? +

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

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

Can I rate-limit save_settings? +

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

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

save_settings 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.