leon-ai/leon

What it is

Leon is an open-source personal AI assistant built around tools, context, memory, and agentic execution. It can run locally, use dedicated tools instead of free-form guessing, and work in smart, controlled, or agent modes. The repository's develop branch holds the 2.0 Developer Preview, while the master branch holds the older, more stable pre-agentic version.

Who it's for

• Developers who want to explore or contribute to Leon's new 2.0 core on the develop branch
• Users who want a privacy-aware assistant that can use local models and local context
• Builders interested in extending an assistant through skills, toolkits, bridges, and binaries

Requirements

Setup

1. Clone the repository and install dependencies

   Clone the repo, go to the project root, install pnpm globally, then install dependencies.

   shCopy

   # Clone the repository
   git clone https://github.com/leon-ai/leon.git
   
   # Go to the project root
   cd leon
   
   # Install pnpm
   npm install --global pnpm@latest
   
   # Install dependencies
   pnpm install

2. Run Leon

   Start Leon. By default it runs locally and the app is available on http://localhost:5366.

   shCopy

   # Run Leon
   pnpm start

3. Check your setup

   Verify that the setup went well.

   shCopy

   # Check the setup went well
   pnpm run check

Pros & cons

Images