announcement_timeline_operation

THE RISK

High Risk

Why announcement_timeline_operation needs a policy

This tool triggers external operations (play, pause, rewind) on ProPresenter's announcement timeline. These are runtime control actions affecting an external A/V presentation system, making it an Execute category. Misuse could disrupt live presentations but effects are generally reversible, warranting medium severity.

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

Documented attack patterns abuse exactly the kind of access announcement_timeline_operation gives an agent:

POLICY

How to control announcement_timeline_operation

PolicyLayer is an MCP gateway — it sits between your AI agents and Propresenter, and nothing reaches the server without passing your rules. This is the rule we recommend for announcement_timeline_operation:

policy.json

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

announcement_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.

Create a free account and register Propresenter — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Propresenter tools

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All 177 Propresenter tools →

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Go deeper

High-risk tools in Propresenter → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about announcement_timeline_operation

What does the announcement_timeline_operation tool do? +

Perform timeline operation (play, pause, rewind) on active announcement. 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 announcement_timeline_operation? +

Register the Propresenter MCP server in PolicyLayer and add a rule for announcement_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 announcement_timeline_operation? +

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

Can I rate-limit announcement_timeline_operation? +

Yes. Add a rate_limit block to the announcement_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 announcement_timeline_operation completely? +

Set action: deny in the PolicyLayer policy for announcement_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 announcement_timeline_operation? +

announcement_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.

Enforce policy on every Propresenter tool call.

Start from Propresenter, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →