Mercury turns Spotify into personal DJ

Hot take: this is a strong “agent as interface” example, but the real product value is the memory/persona layer underneath, not Spotify control by itself.

• –It gives Mercury a practical, daily-use integration that makes the agent feel less like a chat bot and more like an always-on assistant.
• –The DJ mode framing is the sharpest part: queueing, skipping, and adjusting energy in-session is more compelling than a basic music remote.
• –Free-tier read access lowers the bar for trying it, while Premium-only playback keeps the feature set aligned with Spotify’s API limits.
• –The pitch is differentiated if Mercury can genuinely use stored preferences and identity signals to influence music selection, but that claim will need real user proof.