# LeanCTX — Full Documentation Index

> Open-source cognitive context layer for AI coding agents. Reduces Claude Code, Cursor, GitHub Copilot, and Windsurf token costs by up to 99%. Single Rust binary, zero telemetry. Version 3.7.0.

## Documentation

- [Getting Started](https://leanctx.com/docs/getting-started/): Installation, setup, and first steps
- [Configuration](https://leanctx.com/docs/configuration/): config.toml, security, environment variables, hooks
- [Tool API Reference](https://leanctx.com/docs/tools/): All 68 MCP tools with schemas and examples
- [CLI Reference](https://leanctx.com/docs/cli-reference/): Terminal commands and flags
- [Quick Reference](https://leanctx.com/docs/quick-reference/): Daily workflow cheat sheet
- [Security](https://leanctx.com/docs/security/): PathJail, shell allowlist, sandbox, roles, secret detection
- [Budgets & SLOs](https://leanctx.com/docs/budgets-and-slos/): Token/cost budgets and service level objectives
- [Observatory](https://leanctx.com/docs/observatory/): Real-time dashboard and analytics
- [Changelog](https://leanctx.com/docs/changelog/): Version history with detailed release notes

## Features

- [How It Works](https://leanctx.com/how-it-works/): Data flow, compression pipeline, quality preservation
- [Architecture](https://leanctx.com/context-os/): The Cognitive Context Layer — architecture and capabilities
- [Compatibility](https://leanctx.com/compatibility/): 24+ AI coding tools with setup commands

## Concepts

- [Read Modes](https://leanctx.com/docs/concepts/read-modes/): 10 modes for different file reading strategies
- [Token Savings](https://leanctx.com/docs/concepts/token-savings/): How compression works and what it saves
- [Protocols](https://leanctx.com/docs/concepts/protocols/): CEP, CCP, and TDD communication protocols

## Tool Categories

- [Core Tools](https://leanctx.com/docs/tools/core/): ctx_read, ctx_shell, ctx_search, ctx_tree, ctx_overview, ctx_multi_read, ctx_expand, ctx_preload, ctx_prefetch, ctx_delta, ctx_dedup, ctx_compress, ctx_fill, ctx_context, ctx_provider, ctx_cache
- [Session Tools](https://leanctx.com/docs/tools/session/): ctx_session, ctx_agent, ctx_handoff, ctx_share
- [Memory Tools](https://leanctx.com/docs/tools/memory/): ctx_knowledge, ctx_compress_memory
- [Intelligence Tools](https://leanctx.com/docs/tools/intelligence/): ctx_intent, ctx_graph, ctx_graph_diagram, ctx_index, ctx_symbol, ctx_impact, ctx_callers, ctx_callees, ctx_callgraph, ctx_semantic_search, ctx_discover, ctx_discover_tools
- [Analysis Tools](https://leanctx.com/docs/tools/analysis/): ctx_architecture, ctx_analyze, ctx_smells, ctx_review, ctx_outline, ctx_routes, ctx_benchmark, ctx_metrics, ctx_cost, ctx_heatmap, ctx_gain
- [Workflow Tools](https://leanctx.com/docs/tools/workflow/): ctx_workflow, ctx_task, ctx_verify, ctx_proof, ctx_execute, ctx_pack, ctx_wrapped, ctx_call, ctx_response, ctx_feedback, ctx_artifacts

## API

- [MCP Tools Manifest](https://leanctx.com/generated/mcp-tools.json): Machine-readable tool schemas (JSON)
- [API Reference](https://leanctx.com/docs/api-reference/): HTTP API documentation

## Resources

- [GitHub Repository](https://github.com/yvgude/lean-ctx): Source code, issues, discussions
- [npm Package](https://www.npmjs.com/package/lean-ctx-bin): Binary distribution
- [crates.io](https://crates.io/crates/lean-ctx): Rust crate
- [Pi Package](https://pi.dev/packages/pi-lean-ctx): Pi.dev distribution
- [AUR Package](https://aur.archlinux.org/packages/lean-ctx): Arch Linux
- [Homebrew](https://github.com/yvgude/homebrew-lean-ctx): macOS/Linux via Homebrew
- [Discord](https://discord.gg/pTHkG9Hew9): Community and support
- [Privacy Policy](https://leanctx.com/privacy/): Data handling
- [Terms of Service](https://leanctx.com/terms/): Usage terms

## Optional

- [Home](https://leanctx.com/): Overview and quick start
- [What is Context Engineering?](https://leanctx.com/what-is-context-engineering/): Concept explainer
- [Comparison](https://leanctx.com/compare/): Feature comparison with alternatives