trigger_focused_previous

Trigger the previous slide in the focused presentation

SERVERPropresenter SOURCE@alxpark/propresenter-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-alxpark-propresenter-mcp/trigger-focused-previous.md

WHAT IT DOES

What trigger_focused_previous does on Propresenter

AI agents invoke trigger_focused_previous 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.

RISK

Why trigger_focused_previous is rated High

This tool executes a presentation control command (slide navigation) whose effects depend on the current presentation state. While not destructive, it performs an external operation on a presentation system. It modifies the current display state irreversibly in the sense that the user must navigate forward again to undo it, making it an Execute-category action.

From the tool's definition Tool name 'trigger_focused_previous' and description 'Trigger the previous slide in the focused presentation' indicate an action that changes presentation state by navigating to a previous slide.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs trigger_focused_previous 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 trigger_focused_previous, this is the rule to start with:

trigger_focused_previous Rate-limited

trigger_focused_previous 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": {
    "trigger_focused_previous": {
      "limits": [
        {
          "counter": "trigger_focused_previous_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Propresenter, apply this rule, and every trigger_focused_previous call is checked against it from then on.

FAQ

Questions about trigger_focused_previous

What does the trigger_focused_previous tool do? +

Trigger the previous slide in the focused presentation. It is categorised as a Execute tool in the Propresenter MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on trigger_focused_previous? +

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

What risk level is trigger_focused_previous? +

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

Can I rate-limit trigger_focused_previous? +

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

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

trigger_focused_previous is provided by the Propresenter MCP server (@alxpark/propresenter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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