timers_stop

Stop a specific timer

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/timers-stop.md

WHAT IT DOES

What timers_stop does on Propresenter

AI agents invoke timers_stop 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 timers_stop is rated High

Stopping a timer is an action that modifies the runtime state of the presentation software and affects live playback/scheduling. It does not permanently delete data (Destructive), does not move money (Financial), and does not merely read state (Read). It executes a command with real-world consequences for the presentation workflow, making it Execute-category.

From the tool's definition Tool name is 'timers_stop' and description states 'Stop a specific timer' — this triggers an external operation (stopping a timer in ProPresenter 7) whose effect depends on which timer is targeted.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

timers_stop Rate-limited

timers_stop 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": {
    "timers_stop": {
      "limits": [
        {
          "counter": "timers_stop_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 timers_stop call is checked against it from then on.

FAQ

Questions about timers_stop

What does the timers_stop tool do? +

Stop a specific timer. 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 timers_stop? +

Register the Propresenter MCP server in PolicyLayer and add a rule for timers_stop: 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 timers_stop? +

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

Can I rate-limit timers_stop? +

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

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

timers_stop 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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