messages_trigger

What messages_trigger does on Propresenter

AI agents invoke messages_trigger to trigger actions in Propresenter. 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 messages_trigger is rated High

This tool triggers external operations (displaying messages in a presentation control system) whose effects are determined by arguments (which message, what token values). The outcome depends entirely on how an AI agent uses it. While not destructive or financial, it performs an action with real-world side effects in a live presentation context, making it Execute rather than Write or Read.

From the tool's definition Tool name 'messages_trigger' and description 'Trigger (show) a specific message with optional token values' indicate the tool executes an action that causes a presentation message to be displayed, affecting the state of the ProPresenter application and what…

The rule that runs messages_trigger safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Propresenter, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For messages_trigger, this is the rule to start with:

{
  "version": "1",
  "default": "deny",
  "tools": {
    "messages_trigger": {
      "limits": [
        {
          "counter": "messages_trigger_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

Questions about messages_trigger