crystal

Name: crystal
Author: stravu

Warning

(Crystal is now Nimbalyst) Run multiple Codex and Claude Code AI sessions in parallel git worktrees. Test, compare approaches & manage AI-assisted development workflows in one desktop app.

3,096stars

197forks

TypeScript

Installation

# Add to your Claude Code skills
git clone https://github.com/stravu/crystal

Getting Started

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Security ReportWarning

Last scanned: 4/22/2026

{
  "issues": [
    {
      "type": "npm-audit",
      "message": "electron: Electron: AppleScript injection in app.moveToApplicationsFolder on macOS",
      "severity": "high"
    }
  ],
  "status": "WARNING",
  "scannedAt": "2026-04-22T06:01:08.055Z",
  "semgrepRan": false,
  "npmAuditRan": true,
  "pipAuditRan": true
}

README.md

Frequently Asked Questions

What is crystal?

crystal is an open-source ai agents skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by stravu. (Crystal is now Nimbalyst) Run multiple Codex and Claude Code AI sessions in parallel git worktrees. Test, compare approaches & manage AI-assisted development workflows in one desktop app. It has 3,096 GitHub stars.

Is crystal safe to use?

crystal returned warnings in SkillsLLM's automated security scan. It has no critical vulnerabilities, but review the flagged issues in the Security Report section before adding it to your workflow.

How do I install crystal?

Clone the repository with "git clone https://github.com/stravu/crystal" and add it to your Claude Code skills directory (see the Installation section above).

What programming language is crystal written in?

crystal is primarily written in TypeScript. It is open-source under stravu on GitHub, so you can review or fork the full source.

Are there alternatives to crystal?

Yes. SkillsLLM lists many other AI Agents skills you can browse and compare side by side. Open the AI Agents category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh crystal against similar tools.

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Migration

Download Nimbalyst: https://nimbalyst.com/
Documentation: https://docs.nimbalyst.com/
GitHub repository: https://github.com/Nimbalyst/nimbalyst

Nimbalyst Features

AI-native workspace for human + AI collaboration
AI agents that stream edits directly into open editors in real time
Multi-editor environment for code, markdown, spreadsheets, diagrams, and visual docs
Extension-first architecture for custom editor/file-type support
Local-first file model using open formats like Markdown, JSON, and CSV
Code-aware agent orchestration for implementation planning and task execution
Git worktree isolation for safer parallel AI coding sessions
Rich markdown editing with tables, code blocks, embeds, and formatting tools
Monaco-based code editing experience for programming workflows
RevoGrid-powered spreadsheet editing for CSV and tabular workflows
Excalidraw integration for diagram and whiteboard workflows
Visual data modeling tools for schema-centric work
Visual mockup editing for interface ideation and iteration
Unified editor lifecycle with consistent AI integration across editor types
Auto-save and file watching for reliable local development workflows
Project-level workspace management and AI session tracking
Built on production-grade desktop foundations with Electron

FAQ

Is Crystal discontinued? Yes. Crystal is deprecated and replaced by Nimbalyst.
Can I still use Crystal? Yes. You can continue using Crystal, but we recommend moving to Nimbalyst for active updates.
Where is Nimbalyst? https://nimbalyst.com/

For downloads, documentation, and updates, go to https://nimbalyst.com/.