AI agents call bazarr_get_movies 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 retrieves or queries existing movie and subtitle information from Bazarr (a subtitle management service). It has no side effects, does not create, modify, or delete data, and does not execute arbitrary code or trigger external operations. It is a straightforward read/list operation, comparable to a GET API call.
From the tool's definition Tool name 'bazarr_get_movies' and description 'Liste les films avec leurs informations de sous-titres' (List movies with their subtitle information) indicate a retrieval operation that queries and returns movie and subtitle metadata without modifying data.
Attacks that exploit this kind of access
Liste les films avec leurs informations de sous-titres. 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 bazarr_get_movies: 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.
bazarr_get_movies 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 bazarr_get_movies 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 bazarr_get_movies. 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.
bazarr_get_movies 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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