This record as markdown: /tools/io-github-alxpark-propresenter-mcp/playlists-trigger.md
What playlists_trigger does on Propresenter
AI agents invoke playlists_trigger 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 playlists_trigger is rated High
Triggering a playlist in a presentation software (ProPresenter 7) is an Execute action—it runs/initiates an external operation whose effects depend on which playlist is targeted. While it doesn't modify underlying data and isn't financial/destructive, it directly triggers presentation state changes that affect the running service.
From the tool's definition Tool name 'playlists_trigger' with description 'Trigger a specific playlist' indicates execution of a media operation. This action directly controls ProPresenter 7 presentation playback/media sequencing.
Attacks that exploit this kind of access
The rule that runs playlists_trigger 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 playlists_trigger, this is the rule to start with:
playlists_trigger 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 playlists_trigger call is checked against it from then on.
Questions about playlists_trigger
Trigger a specific 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_trigger: 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_trigger 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_trigger 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_trigger. 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_trigger 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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