# RTK - Rust Token Killer (Codex CLI)
**Usage**: Token-optimized CLI proxy for shell commands.
## Rule
Always prefix shell commands with `rtk`.
Examples:
```bash
rtk git status
rtk cargo test
rtk npm run build
rtk pytest -q
```
## Meta Commands
```bash
rtk gain # Token savings analytics
rtk gain --history # Recent command savings history
rtk proxy <cmd> # Run raw command without filtering
```
## Verification
```bash
rtk --version
rtk gain
which rtk
```