AI agents call prowlarr.indexer_status 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.
Status checks are informational queries that retrieve current state without modification. Given the pattern of sibling tools (artist_albums, library_search, scan_library, users_list) on this media management server, indexer_status almost certainly queries the health or availability of configured Prowlarr indexers rather than modifying or executing operations.
From the tool's definition Tool name 'prowlarr.indexer_status' indicates a status query operation. The lack of description prevents confirmation, but 'status' typically implies read-only retrieval of state information without side effects.
Attacks that exploit this kind of access
prowlarr.indexer_status. 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.indexer_status: 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.indexer_status 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.indexer_status 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.indexer_status. 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.indexer_status 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.
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