╭──────────────────────────────────────────╮ ╭──────────────────────────────────────────╮ │ >>>>>>>>>>>>>>> ctx_read >>>>>>>>>>>> │ │ >>>>>>>>>>>>>>> ctx_read >>>>>>>>>>>> │ ┌─────────────┐ │ >>>>>>>>>>>>>>> compress >>>>>>>>>>>> │ ┌──────────┐ ┌─────────────┐ │ >>>>>>>>>>>>>>> compress >>>>>>>>>>>> │ ┌──────────┐ │ 100K tokens │ =========>│ >>> AST >>> cache >>> signal >>> │ =========> │ ~5K tok │ │ 100K tokens │ =========>│ >>> AST >>> cache >>> signal >>> │ =========> │ ~5K tok │ └─────────────┘ │ >>>>>>>>>>>>>>> filter >>>>>>>>>>>> │ └──────────┘ └─────────────┘ │ >>>>>>>>>>>>>>> filter >>>>>>>>>>>> │ └──────────┘ │ >>>>>>>>>>>>>>> dedupe >>>>>>>>>>>> │ │ >>>>>>>>>>>>>>> dedupe >>>>>>>>>>>> │ ╔══════════════╗ ╰──────────────────────────────────────────╯ ╔══════════╗ ╔══════════════╗ ╰──────────────────────────────────────────╯ ╔══════════╗ ║ raw input ║ ─ ─ ─ ─ ─ ─ ─ ─ LeanCTX ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ║ output ║ ║ raw input ║ ─ ─ ─ ─ ─ ─ ─ ─ LeanCTX ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ║ output ║ ╚══════════════╝ ╚══════════╝ ╚══════════════╝ ╚══════════╝ ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄ ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ │░░│ │░░│ │░░│ │░░│ │▓▓│ │▓▓│ │▓▓│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │▓▓│ │▓▓│ │▓▓│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ ───> │▓▓│ │▓▓│ │▓▓│ ───> │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ ───> │▓▓│ │▓▓│ │▓▓│ ───> │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ file file file file read cache send tok tok tok tok tok tok file file file file read cache send tok tok tok tok tok tok ╭──────────────────────────────────────────╮ ╭──────────────────────────────────────────╮ │ >>>>>>>>>>>>>>> ctx_read >>>>>>>>>>>> │ │ >>>>>>>>>>>>>>> ctx_read >>>>>>>>>>>> │ ┌─────────────┐ │ >>>>>>>>>>>>>>> compress >>>>>>>>>>>> │ ┌──────────┐ ┌─────────────┐ │ >>>>>>>>>>>>>>> compress >>>>>>>>>>>> │ ┌──────────┐ │ 100K tokens │ =========>│ >>> AST >>> cache >>> signal >>> │ =========> │ ~5K tok │ │ 100K tokens │ =========>│ >>> AST >>> cache >>> signal >>> │ =========> │ ~5K tok │ └─────────────┘ │ >>>>>>>>>>>>>>> filter >>>>>>>>>>>> │ └──────────┘ └─────────────┘ │ >>>>>>>>>>>>>>> filter >>>>>>>>>>>> │ └──────────┘ │ >>>>>>>>>>>>>>> dedupe >>>>>>>>>>>> │ │ >>>>>>>>>>>>>>> dedupe >>>>>>>>>>>> │ ╔══════════════╗ ╰──────────────────────────────────────────╯ ╔══════════╗ ╔══════════════╗ ╰──────────────────────────────────────────╯ ╔══════════╗ ║ raw input ║ ─ ─ ─ ─ ─ ─ ─ ─ LeanCTX ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ║ output ║ ║ raw input ║ ─ ─ ─ ─ ─ ─ ─ ─ LeanCTX ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ║ output ║ ╚══════════════╝ ╚══════════╝ ╚══════════════╝ ╚══════════╝ ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄ ┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ │░░│ │░░│ │░░│ │░░│ │▓▓│ │▓▓│ │▓▓│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │▓▓│ │▓▓│ │▓▓│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ ───> │▓▓│ │▓▓│ │▓▓│ ───> │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ ───> │▓▓│ │▓▓│ │▓▓│ ───> │░░│ │░░│ │░░│ │░░│ │░░│ │░░│ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ file file file file read cache send tok tok tok tok tok tok file file file file read cache send tok tok tok tok tok tok

Universal Compatibility

Works with every
AI coding tool.

One install. One setup command. LeanCTX adds context intelligence to every AI tool that uses MCP, and even those that don’t, through shell-hook compression.

76 MCP tools + shell hook context layer

Full MCP Support

Aider

Mode-based (Hybrid / MCP)

lean-ctx init --agent aider

Amazon Q Developer

Mode-based (Hybrid / MCP)

lean-ctx init --agent amazonq

Amp

Mode-based (Hybrid / MCP)

lean-ctx init --agent amp

Antigravity IDE

Mode-based (Hybrid / MCP)

lean-ctx init --agent antigravity

Antigravity CLI

Mode-based (Hybrid / MCP)

lean-ctx init --agent antigravity-cli

Augment Code

Mode-based (Hybrid / MCP)

lean-ctx init --agent augment

AWS Kiro

Mode-based (Hybrid / MCP)

lean-ctx init --agent kiro

Claude Code

Mode-based (Hybrid / MCP)

lean-ctx init --agent claude

Cline

Mode-based (Hybrid / MCP)

lean-ctx init --agent cline

Continue

Mode-based (Hybrid / MCP)

lean-ctx setup

Crush

Mode-based (Hybrid / MCP)

lean-ctx init --agent crush

Cursor

Mode-based (Hybrid / MCP)

lean-ctx setup

Emacs

Mode-based (Hybrid / MCP)

lean-ctx init --agent emacs

Gemini CLI

Mode-based (Hybrid / MCP)

lean-ctx init --agent gemini

GitHub Copilot

Mode-based (Hybrid / MCP)

lean-ctx init --agent copilot

Hermes Agent

Mode-based (Hybrid / MCP)

lean-ctx init --agent hermes

JetBrains IDEs

Mode-based (Hybrid / MCP)

lean-ctx init --agent jetbrains

Neovim

Mode-based (Hybrid / MCP)

lean-ctx init --agent neovim

OpenAI Codex

Mode-based (Hybrid / MCP)

lean-ctx init --agent codex

OpenClaw

Mode-based (Hybrid / MCP)

lean-ctx init --agent openclaw

OpenCode

Mode-based (Hybrid / MCP)

lean-ctx init --agent opencode

Pi

Mode-based (Hybrid / MCP)

lean-ctx init --agent pi

Qoder

Mode-based (Hybrid / MCP)

lean-ctx init --agent qoder

QoderWork

Mode-based (Hybrid / MCP)

lean-ctx init --agent qoderwork

Qwen Code

Mode-based (Hybrid / MCP)

lean-ctx init --agent qwen

Roo Code

Mode-based (Hybrid / MCP)

lean-ctx init --agent roo

Sublime Text

Mode-based (Hybrid / MCP)

lean-ctx init --agent sublime

Trae

Mode-based (Hybrid / MCP)

lean-ctx init --agent trae

Verdent

Mode-based (Hybrid / MCP)

lean-ctx init --agent verdent

Windsurf

Mode-based (Hybrid / MCP)

lean-ctx init --agent windsurf

Zed AI

Mode-based (Hybrid / MCP)

lean-ctx setup

No MCP? No problem.

Shell Hook Only

Tools that don't support MCP still benefit from LeanCTX. The shell hook intercepts CLI commands (git, npm, cargo, docker, kubectl, ls, find, and 95+ more) and compresses their output before the AI sees it.

Any CLI-based AI tool

Shell Hook

Intercepts git, npm, cargo, docker, kubectl, pip, go, tsc, and 95+ more commands. Compresses output by 60–90%.

MCP Server

76 specialized tools: ctx_read, ctx_search, ctx_graph, ctx_intent, ctx_session, ctx_task, ctx_cost, and 69 more. Intent-aware compression, session memory, context routing, multi-agent handoffs, knowledge graphs.

lean-ctx setup

$ lean-ctx setup

◆ lean-ctx Setup Wizard

────────────────────────────────────

✓ Shell detected: zsh

✓ Hook installed: ~/.zshrc

✓ AI tool detected: Cursor

✓ Hooks installed: ~/.cursor/hooks.json

✓ AI tool detected: Claude Code

✓ MCP server added: claude mcp add

────────────────────────────────────

Setup complete. Restart your shell.

2 AI tools configured, shell hook active

Zero manual config

How Setup Works

Detects your shell

Finds zsh, bash, or fish and installs the shell hook that intercepts CLI commands.

Finds AI tools

Scans for Cursor, Claude Code, Copilot, Windsurf, Pi, Cline, Zed, and others. Configures MCP for each.

Writes MCP config

Creates the correct JSON config for each tool. No manual editing required.

Built on an Open Standard

MCP (Model Context Protocol) is the open standard for connecting AI tools to external capabilities. Any future tool that supports MCP will work with LeanCTX automatically - no updates needed.

One binary. One protocol. Every AI tool.

Works with your tools. Today.

One install, one lean-ctx setup, and every AI tool you use gets the same context intelligence. No per-tool configuration.

Get Started Star on GitHub

Works with everyAI coding tool.

Full MCP Support

Aider

Amazon Q Developer

Amp

Antigravity IDE

Antigravity CLI

Augment Code

AWS Kiro

Claude Code

Cline

Continue

Crush

Cursor

Emacs

Gemini CLI

GitHub Copilot

Hermes Agent

JetBrains IDEs

Neovim

OpenAI Codex

OpenClaw

OpenCode

Pi

Qoder

QoderWork

Qwen Code

Roo Code

Sublime Text

Trae

Verdent

Windsurf

Zed AI

Shell Hook Only

How Setup Works

Detects your shell

Finds AI tools

Writes MCP config

Built on an Open Standard

Works with your tools. Today.

Works with every
AI coding tool.