# transport_play

Play the specified layer (presentation, announcement, or audio)

Agent View of the PolicyLayer registry record for `transport_play`. HTML page: https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/transport-play

## Facts

- Tool: `transport_play`
- Server: Propresenter (`@alxpark/propresenter-mcp`) — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp.md
- Install: `npx -y @alxpark/propresenter-mcp`
- Homepage: https://github.com/alxpark/propresenter-mcp
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "transport_play",
    "arguments": {}
  }
}
```

## Why transport_play is rated High

This tool triggers playback of a media layer in ProPresenter 7, which is an external operation that causes observable effects (starting audio/video/presentation playback). It fits the Execute category as it triggers an external operation whose effects depend on the layer argument. Severity is medium since misuse could cause unintended content to play publicly during a live event.

From the tool's own definition: "Play the specified layer (presentation, announcement, or audio)"

## Use case

AI agents invoke transport_play 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Propresenter:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "transport_play": {
      "limits": [
        {
          "counter": "transport_play_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Propresenter (176)

- `clear_layer` — Destructive — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/clear-layer.md
- `messages_delete` — Destructive — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/messages-delete.md
- `props_clear` — Destructive — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/props-clear.md
- `props_delete` — Destructive — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/props-delete.md
- `props_delete_collection` — Destructive — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/props-delete-collection.md
- `stage_delete_layout` — Destructive — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/stage-delete-layout.md
- `announcement_focus_active` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/announcement-focus-active.md
- `announcement_timeline_operation` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/announcement-timeline-operation.md
- `announcement_trigger_active` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/announcement-trigger-active.md
- `announcement_trigger_cue` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/announcement-trigger-cue.md
- `announcement_trigger_next` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/announcement-trigger-next.md
- `announcement_trigger_previous` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/announcement-trigger-previous.md
- `audio_focus_active_playlist` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-focus-active-playlist.md
- `audio_focus_next_playlist` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-focus-next-playlist.md
- `audio_focus_playlist` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-focus-playlist.md
- `audio_focus_previous_playlist` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-focus-previous-playlist.md
- `audio_trigger_active_next` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-trigger-active-next.md
- `audio_trigger_active_playlist` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-trigger-active-playlist.md
- `audio_trigger_active_previous` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-trigger-active-previous.md
- `audio_trigger_focused_next` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-trigger-focused-next.md
- `audio_trigger_focused_playlist` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-trigger-focused-playlist.md
- `audio_trigger_focused_previous` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-trigger-focused-previous.md
- `audio_trigger_playlist` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-trigger-playlist.md
- `audio_trigger_playlist_item` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/audio-trigger-playlist-item.md
- `capture_operation` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/capture-operation.md
- `clear_trigger_group` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/clear-trigger-group.md
- `find_my_mouse` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/find-my-mouse.md
- `focus_active_presentation` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/focus-active-presentation.md
- `focus_next_presentation` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/focus-next-presentation.md
- `focus_presentation` — Execute — https://policylayer.com/tools/io-github-alxpark-propresenter-mcp/focus-presentation.md
- …and 146 more: https://policylayer.com/tools/io-github-alxpark-propresenter-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-alxpark-propresenter-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-alxpark-propresenter-mcp