Your AI pair programmer, running locally. Ship code faster with surgical AI edits that actually work.
KeyStone Lite is a desktop code editor with built-in AI that understands your codebase and makes precise, line-level changes. No more copy-pasting from ChatGPT. No more broken suggestions. Just ask, review, apply.
- Actually understands your files - Your active file is automatically included with line numbers, so the AI knows exactly where to make changes
- Surgical precision - No more "here's the whole file rewritten." KeyStone uses INSERT, REPLACE, DELETE operations on specific lines
- 11+ LLM providers - Groq, OpenAI, Anthropic, Gemini, Mistral, Cohere, DeepSeek, or your own local Ollama instance
- Two modes for two mindsets - Debug mode lets you review before applying. Keystone mode auto-applies for rapid iteration
- Ship MVPs faster - Stop context-switching between AI chat and your editor. It's all in one place
- Bring your own keys - Use your existing API keys. Pay for what you use, no per-seat SaaS pricing
- White-label ready - Fork it, brand it, ship it as your own dev tool (see licensing)
- Get an API key from aiassist.net
- Download the latest release for your platform
- Open a project folder and start coding with AI
# Or run from source
cd keystone-lite
npm install
npm run dev # Start Vite dev server
npm start # Launch Electron (in another terminal)
| Feature | Description |
|---|---|
| Multi-file context | Add multiple files to AI context with one click |
| Surgical edits | Line-precise INSERT, REPLACE, DELETE operations |
| Mode toggle | Debug (review first) or Keystone (auto-apply) |
| Project templates | Static HTML/TailWindCSS, React, Express, FastAPI, Electron starters |
| Monaco editor | Full VS Code editing experience |
| Custom endpoints | Connect any OpenAI-compatible API |
| Secure by default | Files sandboxed to project, keys encrypted locally |
Click "Open Folder" or drag a directory. Your file tree appears in the sidebar.
Open a file - it's automatically added to the AI's context with line numbers. Ask questions or request changes.
The AI responds with precise edit blocks:
<<<EDIT app.tsx>>>
<<<REPLACE lines 15-20>>>
const handleSubmit = async (data: FormData) => {
const response = await api.post('/submit', data);
return response.json();
};
<<<END>>>
In Debug mode, click "Apply All" to apply. In Keystone mode, changes apply instantly.
| Provider | Models |
|---|---|
| Groq | Llama 3.3 70B, Mixtral, Gemma 2 |
| OpenAI | GPT-4o, GPT-4 Turbo, o1 |
| Anthropic | Claude 3.5 Sonnet, Claude 3 Opus |
| Gemini 1.5 Pro, Gemini 2.0 Flash | |
| Mistral | Mistral Large, Codestral |
| xAI | xAI Grok |
| TogetherAI | Open-source at scale |
| OpenRouter | Multi-provider access |
| DeepSeek | DeepSeek Coder, DeepSeek Chat |
| Fireworks AI | Fast open-source |
| Perplexity | Search-augmented AI |
| PIN Network | Decentralized inference |
npm run dist # Build for current platform
npm run dist:all # Build for Mac, Windows, Linux
Installers are output to the dist/ folder.
keystone-lite/
├── src/
│ ├── main/ # Electron main process
│ │ ├── index.ts # IPC handlers, file ops
│ │ └── preload.ts # Context bridge
│ └── renderer/ # React frontend
│ ├── components/ # ChatPanel, EditorTabs, ModelSelector
│ ├── lib/ # surgical-edit.ts parser
│ └── pages/ # MainLayout
├── templates/ # Project starters
└── assets/ # Icons and images
| File | Purpose |
|---|---|
ChatPanel.tsx |
AI chat, API calls, system prompts |
ModelSelector.tsx |
Provider/model selection |
surgical-edit.ts |
Edit parsing and application |
MainLayout.tsx |
App layout and state |
index.ts (main) |
File system operations |
- API keys encrypted at rest via electron-store
- All file operations sandboxed to opened project
- No telemetry, no tracking, no phone-home
- Context isolation enabled in Electron
Business Source License 1.1 - See LICENSE
- Free for personal use, development, and evaluation
- Production use requires AiAS API keys or commercial license
- Forks for distribution require written authorization from Interchained LLC
- Converts to MIT License on January 1, 2030
For commercial licensing: dev@interchained.org
- API Keys & Platform: aiassist.net
- Issues & PRs: GitHub
- Enterprise Licensing: dev@interchained.org
Built by AiAssist Secure (AiAS) of Interchained LLC - Powering the next generation of AI-assisted workflows.