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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.90

/powerup — Interactive Feature Tutorials

What

A new /powerup command that launches a set of 10 interactive lessons teaching Claude Code features that "most people miss." Each power-up includes animated terminal demos, explanatory text, and can be marked as completed.

Usage
/powerup
Details
  • 10 lessons covering: @ file mentions, permission modes (shift+tab), undo/rewind, background tasks, CLAUDE.md memory, MCP tool integration, skills & hooks, subagents, remote control/teleport, and model/effort switching
  • Progress is persisted — unlocked power-ups carry across sessions (stored via powerupsUnlocked in local settings)
  • A celebration animation plays when all 10 are completed ("All powered up")
  • Suggested to new users on the welcome screen when the terminal is tall enough (≥44 rows): "New here? Run /powerup to learn the features most people miss."
  • Telemetry events: tengu_powerup_lesson_opened, tengu_powerup_lesson_completed
Evidence

Power-up command and lesson system (search for "Discover Claude Code features through quick interactive lessons")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.90 →