ZengLiangYi/ChatCrystal

Overview

ChatCrystal is a local-first personal knowledge management tool for developers. It imports conversations from Claude Code, Cursor, and Codex, then distills notes, enables semantic search, and visualizes connections with a tag graph and MCP memory.

Best for

Best for
Developers who want to archive and search their AI coding conversations locally

Use cases

• Import and organize coding conversations from multiple AI coding assistants
• Search past discussions semantically to find solutions or context
• Build a personal knowledge graph of tags and memories from chat history

How to use

Install

npm install -g chatcrystal

Tools exposed

• crystal

Tested with

Claude Code, Cursor, Codex CLI, Trae, GitHub Copilot

Notes

ChatCrystal is a local-first personal knowledge management tool for developers. It imports conversations from Claude Code, Cursor, and Codex, then distills notes, enables semantic search, and visualizes connections with a tag graph and MCP memory.

32 stars on GitHub. Last updated 2026-06-15. Licensed Apache-2.0.

Use cases

• Import and organize coding conversations from multiple AI coding assistants
• Search past discussions semantically to find solutions or context
• Build a personal knowledge graph of tags and memories from chat history

Pros

• Runs locally, keeping your data private and offline accessible
• Supports multiple popular coding assistant platforms
• Semantic search and tag graph help retrieve relevant information quickly

Cons

• Small community with only 32 GitHub stars, limited support
• Requires manual import of conversations from each tool
• May lack polish or features of more mature PKM tools

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.