Skills: 21% → 95%
The single biggest lever. Scroll to watch accuracy climb.
21%
Before Skills, the agent guessed at structure. Aggregate accuracy sat at just 21%.
Skills are procedural knowledge — markdown folders Claude reads on demand, encoding how a senior analyst actually works.
Knowledge Skills act as routers, narrowing hundreds of tables down to about 30 curated reference files.
Unbook Skills capture senior-analyst workflows: adversarial review, reusable patterns and known gotchas.
Together they collapse ambiguity into governed answers. Accuracy climbed past 95%.
From 21% to 95% — same model, same data. The win was structure, not raw access.