AI agents call plex_get_unwatched to retrieve information from Nas without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a Plex media server to retrieve a list of unwatched content. It performs a read-only operation with no side effects, no data modification, no code execution, and no destructive actions. The retrieval of unwatched content is informational only.
From the tool's definition Tool name 'plex_get_unwatched' and description 'Récupère les films ou séries non vus' (Retrieves unwatched movies or series) indicate a query operation that retrieves/lists data without modification.
Attacks that exploit this kind of access
Récupère les films ou séries non vus. It is categorised as a Read tool in the Nas MCP Server, which means it retrieves data without modifying state.
Register the Nas MCP server in PolicyLayer and add a rule for plex_get_unwatched: 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 Nas. Nothing to install.
plex_get_unwatched 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 plex_get_unwatched 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 plex_get_unwatched. 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.
plex_get_unwatched is provided by the Nas MCP server (matthieurosset/nas-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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