AI agents call prowlarr.search 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.
Search operations are read-only actions that retrieve data without side effects. The empty description lowers confidence slightly, but the tool name 'search' and the context of Prowlarr (used for finding media metadata/torrents) clearly indicate this retrieves information rather than modifying, executing, or deleting anything. Blast radius of misuse is minimal since searches cannot harm data or systems.
From the tool's definition Tool name is 'prowlarr.search' which indicates a search/query operation. Prowlarr is an indexer manager in the Arr-stack ecosystem. The '.search' suffix strongly implies a read-only query operation.
Attacks that exploit this kind of access
prowlarr.search. 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 prowlarr.search: 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.
prowlarr.search 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 prowlarr.search 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 prowlarr.search. 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.
prowlarr.search 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 →