• Picks
  • Discover
  • Alternatives
  • About

© 2026 Willet

  • Newsletter
  • About
  • FAQ
  • Terms
  • Privacy & Cookies
Join the Discord (opens in a new tab)
rtk-ai avatar

RTK

Shell output compressor that cuts tokens coding agents read

  • AI coding agents
  • Developer tools
View on GitHub
Website

What it is

A single Rust binary that hooks into AI coding agents and rewrites common shell commands so their output is filtered and condensed before it enters the model's context. It trims git diffs and logs, collapses passing tests to a count, groups grep and linter results by file, and reports estimated savings in a dashboard. Developers running Claude Code, Codex, Cursor, Gemini CLI and similar agents install it to keep context windows smaller and API costs lower.

Images

Facts

Stars
84,064 GitHub stars.
84,064

Forks
5,339
Commits
2,459
Contributors
181
Language
Rust
License
Apache-2.0
Last commit
Oct 20, 2026
On GitHub since
January 2026
First release
January 2026
Platforms
macOS, Windows, Linux, CLI
Self-hostable
No
Tags
  • coding-agent
  • agent-plugins
  • context-engineering

Last synced from GitHub on Oct 20, 2026

The 10 best overlooked open-source projects, every Monday.

Share and more

Comments

No comments yet. Start the conversation.

Similar projects

  • Julius Brussee avatar

    Caveman

    Token-cutting skill and local proxy that makes coding agents terse

    114k

What people are saying

Updated Oct 21, 2026
  • Hacker NewsRtk – reduce Claude Code token usageFeb 28, 2026 · 18 points · 3 comments (opens Hacker News in a new tab)
  • Hacker NewsShow HN: RTK – Wrap your CLI commands, save 60-90% of tokens in AI coding agentsFeb 11, 2026 · 4 points · 4 comments (opens Hacker News in a new tab)
  • Hacker NewsCLI proxy that reduces LLM token consumption by 60-90% on common dev commandsApr 10, 2026 · 5 points · 2 comments (opens Hacker News in a new tab)
  • Bluesky“rtk-ai / rtk: CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies ★83819”Oct 18, 2026 · 4 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Coding agents burn a shocking number of tokens just reading shell output. rtk sits in front of every bash call and compresses the result before the agent ever…”Aug 31, 2026 · 4 likes · 0 replies (opens Bluesky in a new tab)
  • Hacker NewsRTK: Rust Token KillerMay 19, 2026 · 2 points · 2 comments (opens Hacker News in a new tab)
  • Hacker NewsCLI proxy that reduces LLM token consumption by 60-90% on common dev commandsMar 29, 2026 · 4 points · 0 comments (opens Hacker News in a new tab)
  • Hacker NewsRust Token Killer – High-performance CLI proxy to minimize LLM token consumptionFeb 19, 2026 · 3 points · 1 comment (opens Hacker News in a new tab)
  • Hacker NewsRtk – High-performance CLI proxy to minimize LLM token consumptionFeb 18, 2026 · 4 points · 0 comments (opens Hacker News in a new tab)
  • Hacker NewsRtk – CLI proxy that reduces LLM token consumption by 60-90%Mar 17, 2026 · 3 points · 0 comments (opens Hacker News in a new tab)
  • Hacker NewsRtk – reduce up to 90% of CLI noise and save agent tokensMar 3, 2026 · 2 points · 0 comments (opens Hacker News in a new tab)
  • Hacker NewsRtk CLI ProxyFeb 13, 2026 · 2 points · 0 comments (opens Hacker News in a new tab)
  • Bluesky“RTK: an open-source Rust tool that compresses LLM context to cut token consumption 60-90%. Free.”Sep 26, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“I've already saved 35K tokens this week using rtk 💜”Sep 16, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“i use to save up on tokens, mb some other tools out there”Aug 24, 2026 · 0 likes · 1 reply (opens Bluesky in a new tab)
  • Bluesky“rtk – Your AI coding agent deserves less CLI noise — rtk compresses CLI output before it reaches your AI agent's context window. Better reasoning, longer…”May 1, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“Take a look at www.rtk-ai.app”Apr 9, 2026 · 1 like · 0 replies (opens Bluesky in a new tab)
  • Bluesky“You could never catch my RTK-using ass overrunning on tokens:”Oct 15, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“It's "Rust Token Killer" but not actually specific to rust code -”Oct 5, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)
  • Bluesky“rtk-ai/rtk: CLI proxy that reduces LLM token consumption by 60-90% on common dev commands. Single Rust binary, zero dependencies ほーん”Sep 21, 2026 · 0 likes · 0 replies (opens Bluesky in a new tab)