RTK (Rust Token Killer)

Simply put, it's a "filter" installed between your terminal and AI coding assistants (like Claude Code or Cursor). When you run commands like git status, ls, or tests, it automatically strips out the noise from the terminal output and feeds only the essential information to the AI.

The biggest pain point with AI coding assistants today is wasting money and context window on useless data. AI tools will dutifully read thousands of lines of logs, dependency lists, or directory trees you print in the terminal, burning through tokens and AI attention for no reason. RTK intercepts the output right after command execution but before it reaches the AI, drastically compressing the information so you can run the same dev workflow for less.

Developers who frequently use AI coding assistants (e.g., Claude Code, Windsurf, Cursor); users sensitive to AI subscription fees or API token costs; programmers who habitually run Git, tests, or file listings in the terminal.

1. Automatically filter out irrelevant dependency loading info and repetitive logs when running git diff or cargo test.

2. Compress massive tree outputs into clean directory structures when asking AI to analyze your project layout.

3. Keep AI focused on core error messages during debugging, ignoring walls of debug prints.

A single-file Rust binary with zero dependencies; nearly invisible overhead (<10ms latency) after installation; requires zero workflow changes as it acts as a transparent proxy; supports 100+ common dev commands right out of the box.

Almost zero. Just one command to install (via Homebrew or a quick script), and it works automatically once your terminal environment variables are set. No coding required, no self-hosting, and no extra API keys needed.