ChatCrystal: Local-first AI PKM for coding conversations: import Claude Code/Cursor/Codex, distill notes, semantic search

by ZengLiangYi · MCP Server · ★ 61

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install ChatCrystal

npm install -g chatcrystal
git clone https://github.com/ZengLiangYi/ChatCrystal.git

Taken from the project's README on GitHub. Check the security audit before running it.

Security audit verdict: SAFE · quality 67/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agent-skillsai-memoryai-toolsclaude-codecodexcursorelectronknowledge-baseknowledge-graphknowledge-management

Quick Facts

Stars61
Forks5
LanguageTypeScript
CategoryMCP Server
LicenseApache-2.0
Quality Score67/100
Open Issues1
Last Updated2026-10-22
Created2026-03-27
Platformsclaude-code, codex, mcp, node
Est. Tokens~16k

About ChatCrystal

ChatCrystal Local-first AI PKM for coding conversations Website · Download Desktop · npm · Docs · 简体中文 ChatCrystal is a local-first AI PKM app for developers who solve real problems with Claude Code, Cursor, Codex CLI, Trae, and GitHub Copilot. It turns scattered AI coding conversations into structured notes, semantic search, a tag knowledge graph, Markdown exports, and MCP memory your agents ca

Compatible Skills

These tools work well together with ChatCrystal for enhanced workflows:

  • roadmap-skill — semantic(0.23)+complementary+same_lang+similar_pop+shared_platform (58%)
  • memex — semantic(0.22)+complementary+rare_topics+same_lang+similar_pop+shared_platform (57%)

ChatCrystal alternative? Top 6 similar tools

Looking for a ChatCrystal alternative? If you're comparing ChatCrystal with other mcp server tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

  • omega-memory by omega-memory · ⭐ 220

    Persistent memory for AI coding agents

  • deterministic-agent-control-protocol by elliot35 · ⭐ 88

    Governance gateway for AI agents — bounded, auditable, session-aware control with MCP proxy, shell proxy & HTT

  • brain-mcp by mordechaipotash · ⭐ 78

    The recorder for your AI conversations — local-first MCP memory that keeps byte-exact copies of your Claude Co

  • roampal-core by roampal-ai · ⭐ 51

    Outcome-based persistent memory MCP server for Claude Code and OpenCode. Good advice promoted, bad advice demo

  • mcp-fusion by vinkius-labs · ⭐ 204

    MCP Fusion - The framework for AI-native MCP servers.

  • notion-mcp-server by awkoy · ⭐ 177

    Notion MCP server with token auth: connect Claude Code, Claude Desktop, Cursor, VS Code and Codex to Notion pa

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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