List all currently active Plex playback sessions — who is watching what, on which device, with playback progress and stream decision (direct play vs transcode). Does not include DVR recordings; those appear in get_activities.
AI agents call get_active_sessions to retrieve information from Plex without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves current playback session information (who is watching, device, progress, stream type) without modifying any data. It is purely informational—a read operation. While the information could be considered sensitive (revealing user activity), the risk of misuse is low because it only reports on existing sessions and cannot modify playback, delete content, or trigger actions.
From the tool's definition Tool description explicitly states 'List all currently active Plex playback sessions' and 'Does not include DVR recordings'. The phrasing 'list' and 'get' indicate a read operation. Server description confirms 'all read-only against your local Plex instance.'
Attacks that exploit this kind of access
List all currently active Plex playback sessions — who is watching what, on which device, with playback progress and stream decision (direct play vs transcode). Does not include DVR recordings; those appear in get_activities. It is categorised as a Read tool in the Plex MCP Server, which means it retrieves data without modifying state.
Register the Plex MCP server in PolicyLayer and add a rule for get_active_sessions: 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 Plex. Nothing to install.
get_active_sessions is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_active_sessions 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 get_active_sessions. 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.
get_active_sessions is provided by the Plex MCP server (x10send/plex-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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