volume_ramp
Generic volume ramp to a target percent over N minutes (up OR down, step-controlled, optional end-state pause/play) — a superset of schedule_wind_down (which is down-only with floor+pause). Quota: stepped PUT /me/player/volume writes (ceil(minutes/step_minutes) calls), in-process, cancel-safe (re...
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What volume_ramp does on Spotify
AI agents invoke volume_ramp to trigger actions in Spotify. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why volume_ramp is rated High
Triggers repeated API calls to modify playback volume over time via external Spotify player.
From the tool's definition stepped PUT /me/player/volume writes, cancel-safe, restart replaces
Attacks that exploit this kind of access
The rule that runs volume_ramp safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Spotify, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For volume_ramp, this is the rule to start with:
volume_ramp stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Spotify, apply this rule, and every volume_ramp call is checked against it from then on.
Questions about volume_ramp
Generic volume ramp to a target percent over N minutes (up OR down, step-controlled, optional end-state pause/play) — a superset of schedule_wind_down (which is down-only with floor+pause). Quota: stepped PUT /me/player/volume writes (ceil(minutes/step_minutes) calls), in-process, cancel-safe (restart replaces). It is categorised as a Execute tool in the Spotify MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Spotify MCP server in PolicyLayer and add a rule for volume_ramp: 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 Spotify. Nothing to install.
volume_ramp is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the volume_ramp 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 volume_ramp. 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.
volume_ramp is provided by the Spotify MCP server (@novalux12/spotify-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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