Projects in Claude — organizing work and knowledge

Projects are self-contained workspaces with their own memory, chat history, knowledge base, and configured instructions. Think of them as dedicated environments for specific lines of work. Projects are ideal for storing knowledge that Claude should reference, for organizing related chats around a specific topic, and for collaborating with colleagues who need access to a single shared context. Projects are especially valuable when you are working on something ongoing, rather than asking a one-off question. Create a project when you have reference materials that you will use repeatedly: meeting notes, research results, reports, historical data. You also need a project when there are persistent requirements for how Claude should respond: always use formal language, always cite sources, always follow your template. Finally, a project is indispensable for teamwork when several people need to work on a shared foundation.

Setting up a project takes a few minutes. Hover over the left sidebar and click "Projects," or go to claude dot ai slash projects. Click "New project" in the upper right corner. Give the project a descriptive name, for example "Q4 Marketing Campaign" or "Product Documentation." Then click on "Instructions" and write how Claude should behave across all conversations in this project. Good project instructions usually include context: "This project is for creating marketing materials for our software product." Process instructions: "First prepare an outline of the article, then write a draft." Tone and style preferences: "Use a professional but conversational tone." Specific requirements: "Always add a call to action at the end of marketing copy." Once the instructions are written, go to the knowledge base. Click the plus button to upload documents: brand guidelines, reference materials, templates, technical specifications. Name files descriptively — Claude uses file names to find the relevant information.

When you upload many documents to a project, a question may arise: what happens when context window limits are reached? Projects automatically scale through a feature called Retrieval Augmented Generation, or RAG. When a project's knowledge base approaches the context window limit, Claude smoothly activates RAG mode. Instead of loading all of the project's content into memory at once, Claude intelligently searches and retrieves only the most relevant information needed to answer your questions. This expands your project's capacity up to tenfold while preserving response quality. You will see a visual indicator when your project is operating in RAG mode, but the experience should feel the same: you can still upload documents, converse with Claude, and receive context-aware responses. This allows you to build truly large knowledge bases without worrying about technical limits. The main practical implication: the more precisely you name files, the better Claude finds the right information in RAG mode.

For users on Team and Enterprise plans, projects become even more powerful thanks to collaboration features. There are three levels of access when sharing a project. "View" level: participants can see the project's content, use the knowledge base, and talk to Claude, but cannot make changes. This is read-only access with the right to discuss. "Edit" level: participants have full collaboration capabilities. They can modify instructions, update the knowledge base, manage other participants, and actively contribute to the project. "Owner" level: project creators control everything, including who can see the project. They can share it with specific people or make projects visible to the entire organization. To share a project, open it, click the "Share project" button, and add participants by name or email. Team members will receive email notifications when you share a project with them, and they can find shared projects on the "Shared with me" tab.

To get the most out of projects, follow a few proven principles. First: start focused, then expand. It's better to start with a specific use case than to try to create one project for everything. You can always add more content as needed. Second: keep the knowledge base up to date. Outdated documents lead to outdated responses. Periodically review and update the project's knowledge. Third: write clear instructions. Be specific about what you want. Vague instructions lead to inconsistent results. Fourth: group related documents together. This helps Claude draw connections between different sources and give more complete answers. Fifth: name documents in your questions. When asking questions, mention specific documents to help Claude focus its search: "Based on our Q3 report, what were the top customer requests?" A well-configured project works like a smart colleague who is always in context and never forgets the rules of your work.