AI agents call radarr.movie_lookup to retrieve information from Arr Stack without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name indicates a lookup operation on Radarr (a movie management platform). Lookup operations are fundamentally read-only queries that retrieve information about movies without modifying, executing, or deleting anything. No description is available, which slightly lowers confidence, but the naming pattern and Radarr's function as a media database strongly indicate this is a search/query tool.
From the tool's definition Tool name 'radarr.movie_lookup' contains 'lookup', which is a read-only query operation typical of retrieval tools. The Radarr context (a media management system) supports this as a search/query function.
Attacks that exploit this kind of access
radarr.movie_lookup. It is categorised as a Read tool in the Arr Stack MCP Server, which means it retrieves data without modifying state.
Register the Arr Stack MCP server in PolicyLayer and add a rule for radarr.movie_lookup: 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 Arr Stack. Nothing to install.
radarr.movie_lookup 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 radarr.movie_lookup 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 radarr.movie_lookup. 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.
radarr.movie_lookup is provided by the Arr Stack MCP server (new-usemame/arr-stack-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →