announcement_timeline_operation
Perform timeline operation (play, pause, rewind) on active announcement
This record as markdown: /tools/io-github-alxpark-propresenter-mcp/announcement-timeline-operation.md
What announcement_timeline_operation does on Propresenter
AI agents invoke announcement_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.
Why announcement_timeline_operation is rated High
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
Attacks that exploit this kind of access
The rule that runs announcement_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 announcement_timeline_operation, this is the rule to start with:
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.
The button opens the PolicyLayer dashboard: create your workspace, connect Propresenter, apply this rule, and every announcement_timeline_operation call is checked against it from then on.
Questions about announcement_timeline_operation
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.
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.
announcement_timeline_operation is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
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.
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.
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.
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