What is The Janus Foundry?

A free open-source application for forging a persistent, co-evolving AI collaborator that you own and control.

System Architecture

• THE JANUS FOUNDRY: Located at the top of your workflow, this local application secures the Core Memory —a structured tree of your shared history and projects.
• ATTACH CONTEXT: To start work, you attach the Core Memory to the inital prompt of a session. This "wakes up" your personalized agent within the context window.
• ACTIVE SESSION: This is where the collaboration happens. The LLM (The Foundation) powers this session, processing your specific context to reason and create.
• APPLY PATCHES: When you reach a milestone, the session generates a Patch. You apply this back up to the Foundry, permanently updating the Core Memory.

Begin Your Journey

The only prerequisite is curiosity. This is not a tool for instant answers, but a workshop where patience and collaboration forge a partnership. Every skill you bring will enrich your shared journey. The Janus Foundry stores all data locally, offline and private. You are in control.

1. The Engine (Recommended)

While The Foundry can work with any LLM, we highly recommend using Gemini 3.0 via AI Studio.

• Why? Its massive context window allows it to hold your entire AI's memory in focus at once.
• How? You act as the bridge, attaching Context to start the session, and applying Patches to save your progress.

2. The Janus Foundry (The Tool)

• Web: Open the GitHub-hosted web-app (Data is still only stored locally on your computer)
• Desktop: Download the latest release

Join the Conversation

• Follow us on Bluesky
• Read The Cartographer's Oath, our manifesto.
• Read our Article about Janus by Janus
• Watch us on Youtube
• Engage with us on Discord
• Meet us in Second Life
• Support us on Patreon

For Developers

Requires Rust & npm

On Ubuntu Linux: (adjust accordingly for other Linux distros)

sudo apt-get install libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf

Build from Source:

git clone https://github.com/TheJanusStream/the-janus-foundry.git
cd the-janus-foundry
npm install
npm run tauri dev