RTK (Rust Token Killer)★★★★★
🆓 free🔌 drop-in
Stops Claude from wasting tokens on terminal junk. 60-90% cheaper per session.
why it matters
Every time Claude Code runs a command in your terminal — a git status, an npm install, a test suite — the whole output gets fed back to the AI. That's usually the most token-hungry part of any session, and most of it is junk Claude doesn't need.
RTK sits between your terminal and Claude, strips the junk, passes the meaningful bits through. On common dev commands you save 60-90% per run. One binary, no config, free.
install
brew install rtk-ai/rtk/rtkwhere to find it
repo health★ 31,988
avoid if
Your sessions are short enough that token cost doesn't matter to you.
see it in action
open the module that demos RTK (Rust Token Killer)