One free plugin, one command, and Claude works like a real senior engineer: questions first, then a spec, a plan, tests, and finally sub agents that build and review.
In this video
Commands that start with / go inside Claude Code. The others go in a terminal.
Superpowers
317K ★MITClaude asks what you are building first, writes a spec in short chunks, makes a plan with red/green tests, then sub agents build and review.
Install
/plugin install superpowers@claude-plugins-official
Good to know
- Claude Code needs a paid Claude plan; the plugin itself is free and open source. Star count from 13 Nov 2026.
Facts checked on 13 Nov 2026. Star counts, prices and plans change: check the official page before you pay for anything.