AiDex logo
AiDex
★ 46
vs
lean-ctx logo
lean-ctx
★ 3.9k

AiDex vs lean-ctx

AiDex: AiDex is an MCP server that gives AI coding assistants instant access to your entire codebase through a persistent, pre-built index. It works with any MCP-compatible AI assistant and reduces context consumption for code navigation by 50-80%. Featuring Tree-sitter parsing, incremental updates, and time-based filtering.; lean-ctx: lean-ctx is an open-source MCP server designed to drastically reduce LLM token costs for AI coding tools like Claude Code, Cursor, and Copilot. It achieves this by transparently compressing CLI output and file context, offering up to 99% savings and making AI coding faster, cheaper, and more effective without changing workflows.

01

TL;DR

AiDex logo
AiDexCode Assistant · ★ 46

Instant code navigation without wasting AI context

lean-ctx logo
lean-ctxMemory & Context · ★ 3.9k

Reducing token costs for Claude Code, Cursor, and Copilot

02

Side-by-Side Comparison

Field
AiDex logoAiDex
lean-ctx logolean-ctx
Category
Code Assistant
Memory & Context
Stars
★ 46
★ 3.9k
License
MIT
MIT
Install Command
npm install -g aidex-mcp
curl -fsSL https://leanctx.com/install.sh | sh && lean-ctx setup && lean-ctx doctor
Updated
4w ago
1d ago
Open Source
Yes
Yes
Tags
ai-coding, claude, claude-code
agentic-coding, ai, ai-coding
03

Features

AiDex logoAiDex
01Tree-sitter Parsing for accurate identifier indexing
02~50 tokens per search vs 2000+ with grep
03Persistent index surviving between sessions
04Incremental updates and time-based filtering
05Zero external dependencies with SQLite WAL mode
lean-ctx logolean-ctx
01Transparent shell hook for CLI output compression
02Context server with 28 intelligent tools
03One-command integration for AI coding agents
04Adaptive LLM communication with Cognitive Efficiency Protocol
05Cross-session memory for context continuity
04

Use Cases

AiDex logoAiDex
↳Instant code navigation without wasting AI context
↳Search across multiple projects with global queries
↳Track session notes and task backlog for continuous development
lean-ctx logolean-ctx
↳Reducing token costs for Claude Code, Cursor, and Copilot
↳Optimizing MCP server performance
↳Saving $30-100+ per month on AI coding API costs
FAQ

FAQ

What is the difference between AiDex and lean-ctx?
Both AiDex and lean-ctx are in the Code Assistant category. AiDex has 46 stars, while lean-ctx has 3.9k stars.
Which is better, AiDex or lean-ctx?
The best choice depends on your use case. Choose AiDex if Instant code navigation without wasting AI context, and lean-ctx if Reducing token costs for Claude Code, Cursor, and Copilot.
Is AiDex free or open source?
Yes, AiDex is open source on GitHub (MIT).
Is lean-ctx free or open source?
Yes, lean-ctx is open source on GitHub (MIT).
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