Focus the active presentation playlist
AI agents invoke playlists_focus_active_presentation 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.
'Focus' implies triggering a UI action or state change in ProPresenter (directing attention/control to a specific playlist), which is an external operation that affects the running application's state. It does not read data, write/create content, or delete anything, making Execute the best fit. Blast radius is low as it only affects which playlist is focused in a presentation software.
From the tool's definition Focus the active presentation playlist
Documented attack patterns abuse exactly the kind of access playlists_focus_active_presentation gives an agent:
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 playlists_focus_active_presentation:
{
"version": "1",
"default": "deny",
"tools": {
"playlists_focus_active_presentation": {
"limits": [
{
"counter": "playlists_focus_active_presentation_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
} playlists_focus_active_presentation 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.
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Focus the active presentation playlist. 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 playlists_focus_active_presentation: 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.
playlists_focus_active_presentation 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 playlists_focus_active_presentation 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 playlists_focus_active_presentation. 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.
playlists_focus_active_presentation 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.
Start from Propresenter, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
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