After a few months of daily Claude Code, I noticed I was reaching for the same three or four interaction patterns every session. Not because they were the best tool — just because they worked well enough and I'd stopped thinking about it.
Dakan and Feller's 4D AI Fluency Framework names 11 observable collaboration behaviors across three axes: Description, Discernment, and Delegation. Anthropic ran those behaviors across 9,830 real Claude conversations in February 2026, so there's an actual population baseline to compare against. I wanted to know which of the 11 I was using — and which ones I'd never touched.
skill-tree reads your Claude Code or Cowork session history, classifies all 11 behaviors, assigns one of seven archetype cards (rendered as tarot cards with museum art, live example at skill-tree-ai.fly.dev/fixture/illuminator), and picks a growth quest for your next session.
The quest selection is the part I actually care about most. It doesn't pick something you do passably and suggest you do it better. It looks at the behaviors with zero or near-zero frequency in your sessions and surfaces one of those. The assumption is that your high-frequency behaviors are already locally optimized — pushing harder on them returns less than trying something you've been systematically avoiding. If you never delegate multi-step planning, that's the quest. If you never use discernment behaviors to push back on Claude's first answer, that's the quest.
The quest persists via a SessionStart hook, so it's visible at the top of your next session rather than something you have to remember to re-run.
Full 7-step orchestration (find session files → extract user messages → remote classifier via Claude Haiku on Fly.io → archetype assignment → narrative synthesis → render → return URL) takes 30–60 seconds.
Install in Claude Code:
claude plugin marketplace add robertnowell/ai-fluency-skill-cards && claude plugin install skill-tree-ai@ai-fluency-skill-cards
Also available as an MCP server (npm install skill-tree-ai) for Cursor, VS Code, and Windsurf.
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