AI agents call prowlarr_get_applications 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 a list of connected applications from Prowlarr. It performs a read-only query with no side effects, no code execution, and no data modification. The blast radius of misuse is minimal — an attacker could learn the architecture of the media server stack but cannot modify or delete configurations. Confidence is high because the intent is unambiguous.
From the tool's definition Tool name contains 'get' and description states 'Liste les applications connectées' (lists connected applications) — a pure retrieval operation with no modification or execution.
Attacks that exploit this kind of access
Liste les applications connectées à Prowlarr (Radarr, Sonarr, etc.). 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 prowlarr_get_applications: 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.
prowlarr_get_applications 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_get_applications 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_get_applications. 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_get_applications 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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