alexa_execute_routine · Alexa MCP: Risk & Policy

WHAT IT DOES

What alexa_execute_routine does on Alexa

AI agents invoke alexa_execute_routine to trigger actions in Alexa. 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 alexa_execute_routine needs a policy

This tool triggers execution of arbitrary automation sequences on Alexa devices. While the routine must pre-exist (limiting some attack surface), an AI agent with access to alexa_list_routines could discover and execute any routine, potentially triggering unintended smart-home actions, announcements, or device state changes.

From the tool's definition Tool description states it 'Execute[s] an existing Alexa routine' and takes an 'automation definition' as input. The word 'Execute' directly indicates code/command execution.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

alexa_execute_routine Rate-limited

alexa_execute_routine 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": {
    "alexa_execute_routine": {
      "limits": [
        {
          "counter": "alexa_execute_routine_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 Alexa, so you can run agents against it safely.

FAQ

Questions about alexa_execute_routine

What does the alexa_execute_routine tool do? +

Execute an existing Alexa routine by providing its automation definition (from alexa_list_routines). It is categorised as a Execute tool in the Alexa MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on alexa_execute_routine? +

Register the Alexa MCP server in PolicyLayer and add a rule for alexa_execute_routine: 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 Alexa. Nothing to install.

What risk level is alexa_execute_routine? +

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

Can I rate-limit alexa_execute_routine? +

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

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

alexa_execute_routine is provided by the Alexa MCP server (serversmx/alexa-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.