crow_navidrome_now_playing
Show currently playing tracks across all Navidrome clients
This record as markdown: /tools/kh0pper-crow/crow-navidrome-now-playing.md
What crow_navidrome_now_playing does on Crow
AI agents call crow_navidrome_now_playing to retrieve information from Crow without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why crow_navidrome_now_playing is rated Low
This tool retrieves current playback state information from Navidrome music server clients. It performs a read-only query with no side effects, no data modification, no code execution, and no destructive or financial implications. The blast radius of misuse is minimal—exposure would only reveal what music is currently playing, which is non-sensitive metadata in most contexts.
From the tool's definition Tool name 'crow_navidrome_now_playing' and description 'Show currently playing tracks across all Navidrome clients' indicate a query/retrieval operation with no modification, deletion, or execution of commands.
Attacks that exploit this kind of access
The rule that runs crow_navidrome_now_playing safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crow_navidrome_now_playing, this is the rule to start with:
crow_navidrome_now_playing is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Crow, apply this rule, and every crow_navidrome_now_playing call is checked against it from then on.
Questions about crow_navidrome_now_playing
Show currently playing tracks across all Navidrome clients. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.
Register the Crow MCP server in PolicyLayer and add a rule for crow_navidrome_now_playing: 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 Crow. Nothing to install.
crow_navidrome_now_playing 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 crow_navidrome_now_playing 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 crow_navidrome_now_playing. 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.
crow_navidrome_now_playing is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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