set_locale · AVD MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_locale does on AVD MCP Server

AI agents invoke set_locale to trigger actions in AVD MCP Server. 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 set_locale needs a policy

The tool executes system-level commands (setprop) and triggers Android broadcast intents to change the device locale. This constitutes an Execute action as it runs external operations on the device. Misuse could disrupt running apps or testing workflows by changing the system locale unexpectedly, warranting medium severity.

From the tool's definition 'Define locale do device (idioma/país) via setprop e broadcast' — sets system properties via setprop and triggers a broadcast, which are active system operations on the Android device.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_locale Rate-limited

set_locale 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": {
    "set_locale": {
      "limits": [
        {
          "counter": "set_locale_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 AVD MCP Server, so you can run agents against it safely.

FAQ

Questions about set_locale

What does the set_locale tool do? +

Define locale do device (idioma/país) via setprop e broadcast. It is categorised as a Execute tool in the AVD MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on set_locale? +

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

What risk level is set_locale? +

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

Can I rate-limit set_locale? +

Yes. Add a rate_limit block to the set_locale 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_locale completely? +

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

set_locale is provided by the AVD MCP Server MCP server (jramalho/avd-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.