RTK
Coding Assistant
Free
CLI proxy that intercepts dev commands and compresses their output before it reaches your LLM, cutting token usage by 60–90% with under 10ms overhead.
Key features
- 100+ supported commands — git, cargo, pytest, docker, AWS CLI, and more
- Single Rust binary, zero external dependencies
- Auto-rewrite hook transparently intercepts commands without changing your workflow
- Works with Claude Code, Copilot, Cursor, Gemini CLI, and 10+ other agents
- rtk gain dashboard shows real-time token savings analytics
- Cross-platform: macOS, Linux, Windows
Pros
- Measurable 60–90% token savings with no workflow changes
- Zero-config after hook setup
- Open source and free
- Extremely low latency overhead (<10ms)
Cons
- CLI only — no GUI
- Savings vary by command; some commands see less compression
clitoken-optimizationrustopen-sourcedeveloper-toolsai-coding
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