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rtk (Rust Token Killer) is a CLI proxy tool that intercepts and compresses command outputs before they reach an LLM context window, reducing token consumption by 60-90%. It works as a transparent proxy for common dev commands like git, cargo, pytest, docker, and more. The recommended setup uses a Claude Code PreToolUse hook that automatically rewrites commands (e.g., `git status` → `rtk git status`) without requiring manual intervention. Key features include smart filtering, grouping, deduplication, truncation, a tee feature for full output recovery on failures, token savings analytics via `rtk gain`, and a `rtk discover` command to identify missed savings opportunities. Typical 30-minute Claude Code sessions drop from ~150K tokens to ~45K tokens.

GitHub - rtk-ai/rtk: CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies

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CLI proxy that reduces LLM token consumption by 60-90% on common dev commands

<p>CLI proxy that reduces LLM token consumption by 60-90% on common dev commands</p>

<p><a href="https://app.daily.dev/fabidick22" data-mention-id="CuJEPTEsDJlaKzfXt7xfz" data-mention-username="fabidick22" translate="no">@fabidick22</a> Thanks for talking about it! Feel free to join us at <a href="https://discord.gg/PqHyXKcc" target="_blank" rel="noopener nofollow">https://discord.gg/PqHyXKcc</a>.</p>
