timeline_operation

Perform timeline operation (play, pause, rewind) on active 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/timeline-operation.md

WHAT IT DOES

What timeline_operation does on Propresenter

AI agents invoke timeline_operation 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 timeline_operation is rated High

This tool triggers playback control operations (play, pause, rewind) on an active presentation timeline. These are external operations that affect the state of a running ProPresenter 7 instance. It falls under Execute as it triggers external operations whose effects depend on the arguments passed (which operation to perform), with medium severity since misuse could disrupt a live presentation.

From the tool's definition Perform timeline operation (play, pause, rewind) on active presentation

Attacks that exploit this kind of access

RECOMMENDED RULE

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

timeline_operation Rate-limited

timeline_operation 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": {
    "timeline_operation": {
      "limits": [
        {
          "counter": "timeline_operation_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 timeline_operation call is checked against it from then on.

FAQ

Questions about timeline_operation

What does the timeline_operation tool do? +

Perform timeline operation (play, pause, rewind) on active 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 timeline_operation? +

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

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

Can I rate-limit timeline_operation? +

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

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

timeline_operation 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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