caveman

Verdict

Caveman is a tightly scoped, well-documented token-compression skill with clean hooks, zero runtime network calls, and benchmark numbers that are more carefully qualified than the headline suggests. The 65% token reduction is real for prose replies; the JetBrains-measured 8.5% applies to agentic coding runs, and the README explains both in the same paragraph — an unusual level of honesty for a plugin README. Hooks are purely local, install is standard, and the caveman-stats command gives users an actual receipt of session savings rather than a marketing promise.

Install

/plugin marketplace add JuliusBrussee/caveman
/plugin install caveman@caveman

Source: github.com/JuliusBrussee/caveman

Audit receipts

Every listing is verified against a specific commit. These are the receipts.

Cluster note

Several language-specific ports exist (cavemanov for Russian/Kazakh, others). This is the English original and the best-maintained.