Projects: Persistent Context for Ongoing Work

A Project is a workspace that keeps context persistent across chats. Instead of re-explaining your codebase, client, or writing style every time, you set it once — as an uploaded knowledge base plus custom instructions — and Claude already knows it in every new chat inside that Project.

When to Use One

• You keep pasting the same background into new chats.
• You work on something ongoing — a codebase, a book, a specific client or brand.
• You want consistent tone and rules applied every time.

Projects are available on the Pro and Team plans. For a full, step-by-step walkthrough of setting one up — what goes in the knowledge base versus the instructions, and the mistakes to avoid — see our guide: How to Use Claude Projects for Long-Running Work.