AI agents call get_listening_genres to retrieve information from Rewind without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and aggregates existing listening history data organized by time periods. It performs no side effects, does not execute code or external operations, does not modify data, and does not involve financial transactions. The worst-case misuse is exposure of personal listening preferences, which is a data confidentiality concern but not a capability risk. It is classified as Read with low severity.
From the tool's definition Tool description explicitly states 'Get genre breakdown' and 'from Last.fm listening history' — retrieval operations with no modification or execution.
Attacks that exploit this kind of access
Get genre breakdown over time from Last.fm listening history, grouped by week/month/year. Designed for stacked chart visualization. It is categorised as a Read tool in the Rewind MCP Server, which means it retrieves data without modifying state.
Register the Rewind MCP server in PolicyLayer and add a rule for get_listening_genres: 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 Rewind. Nothing to install.
get_listening_genres 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 get_listening_genres 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 get_listening_genres. 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.
get_listening_genres is provided by the Rewind MCP server (rewind-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_listening_genres is one line of Rewind's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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