Get popular, top rated, upcoming, and now playing movies
AI agents call discover_movies to retrieve information from Yarr Media Stack without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries movie information from media services without side effects. It performs read-only operations against a media database or API, returning information about movies. There is no capability to modify data, execute commands, delete content, or move money. The low severity reflects that misuse would only result in unwanted information retrieval, not system damage or unauthorized actions.
From the tool's definition Tool description states 'Get popular, top rated, upcoming, and now playing movies' - purely retrieval of movie data with no modification, creation, deletion, or execution capabilities.
Attacks that exploit this kind of access
Get popular, top rated, upcoming, and now playing movies. It is categorised as a Read tool in the Yarr Media Stack MCP Server, which means it retrieves data without modifying state.
Register the Yarr Media Stack MCP server in PolicyLayer and add a rule for discover_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 Yarr Media Stack. Nothing to install.
discover_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 discover_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 discover_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.
discover_movies is provided by the Yarr Media Stack MCP server (mcpnexus-registry/yarr). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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