local_enable_api · Vestaboard MCP Server MCP: Risk & Policy

WHAT IT DOES

What local_enable_api does on Vestaboard MCP Server

AI agents use local_enable_api to create or update resources in Vestaboard MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Vestaboard MCP Server environment.

WHY IT NEEDS A POLICY

Why local_enable_api needs a policy

This tool enables a local API endpoint, which is a configuration/write action that activates functionality on the device. It is reversible (the API can presumably be disabled again) and modifies device state rather than deleting data or executing arbitrary code. Misuse could expose the local device API to unintended access, hence medium severity.

From the tool's definition Enable the Local API using an enablement token

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

local_enable_api Rate-limited

local_enable_api 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": {
    "local_enable_api": {
      "limits": [
        {
          "counter": "local_enable_api_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 Vestaboard MCP Server, so you can run agents against it safely.

FAQ

Questions about local_enable_api

What does the local_enable_api tool do? +

Enable the Local API using an enablement token. It is categorised as a Write tool in the Vestaboard 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 local_enable_api? +

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

What risk level is local_enable_api? +

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

Can I rate-limit local_enable_api? +

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

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

local_enable_api is provided by the Vestaboard MCP Server MCP server (lintility/vestaboard-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.