Rtk Lite Cc — AI skill for Claude Code

CLI proxy that compresses command outputs before they eat your Claude Code context window.

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Stripped-down fork of [rtk-ai/rtk](https://github.com/rtk-ai/rtk). Same filters, none of the overhead.

Single Rust binary, ~3.8 MB, <10ms overhead. No database, no network calls, no telemetry.

How it works

Claude Code runs "git status"
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        v
  Hook intercepts (PreToolUse)
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  "rtk rewrite" returns "rtk git status"
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  rtk executes, filters output, prints compressed version
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  Claude Code sees ~80% fewer tokens

Claude Code doesn't know RTK exists. The hook rewrites commands silently before execution.

Install

# Pre-built binary (Linux/macOS)
curl -fsSL https://raw.githubusercontent.com/sderosiaux/rtk-lite-cc/master/install.sh | sh

# From crates.io
cargo install rtk-lite-cc

# From source
cargo install --git https://github.com/sderosiaux/rtk-lite-cc

Then:

rtk init -g              # install hook + patch settings.json
rtk init -g --auto-patch # same, skip the prompt

This does two things:

1. Installs ~/.claude/hooks/rtk-rewrite.sh
2. Adds a PreToolUse entry in ~/.claude/settings.json

To undo: `rtk init -g --uninstall`

Usage

After `rtk init -g`, commands are transparently rewritten:

git status   -->  rtk git status    (filtered)
cargo test   -->  rtk cargo test    (only failures)
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