AI agents call get_listening_streaks 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 historical listening streak statistics from Last.fm (number of consecutive days with scrobbles and longest streak record). It performs a read-only query of personal music history data without creating, modifying, deleting, or executing any operations. The blast radius of misuse is minimal—an attacker gains only visibility into the user's music listening patterns, which is informational only.
From the tool's definition Tool name 'get_listening_streaks' and description 'Get listening streak data from Last.fm -- current consecutive days with scrobbles and the longest streak ever' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Get listening streak data from Last.fm -- current consecutive days with scrobbles and the longest streak ever. 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_streaks: 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_streaks 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_streaks 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_streaks. 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_streaks 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_streaks 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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