Start with a thought. Write a question, a half-formed idea, or something you don’t want to forget. It doesn’t need a title.
01 / Shan is a Shared Human–Agent Notebook
AI Native.
Your agent runs in a purpose-built sandbox. Work with your notes the way you work with a coding agent.
02 / Shan is private
Commit your note.
One note, one file. Every change, a commit. Saved locally and synced to your own GitHub repository. Your thoughts stay yours.
03 / Shan only uses your Codex token plan
Codex Token Plan.
Shan puts your unused tokens to work behind the scenes, connecting your notes and exploring topics that spark your curiosity—all without you having to ask.
04 / Shan has magic tags
Magic Tag.
All-uppercase tags have a little magic. They often trigger interesting agent workflows. You’ll discover more along the way.
Forget Markdown. It won’t necessarily help you.
Give your curiosity a task. Add #ASK to a note to ask your agent: “Explore my notes. What’s one idea worth thinking about more deeply?”
Let connections find you. When you create a note, your agent gathers relevant information and connects it with earlier memories. Its reply is saved as a deeper note tagged #CONTEXT.
Search where you write. Use the bottom field to search your notes—or turn a new thought into a note.
Connect your thoughts. Type @ while writing to reference another note. Bring an earlier idea into your current thought.
Keep a history of your thinking. Each note is a file. Each change is a commit. Your GitHub repository keeps the history.