Check which project experience you use
Claude’s current documentation distinguishes existing projects from a staged beta that adds parallel cloud threads and a Library. Do not assume every account has the same interface or capabilities. Shared projects and member editing are documented features.
Memory is not always isolated
Claude documents project memory alongside account-memory settings. To keep a project’s memory fully separate, its guide says to turn off Use account memory. Hjarni sign-in connections use account access by default; limit each connection to selected folders, read-only access, or both at sign-in or in Settings > Connections. Follow the folder-access walkthrough to check the boundary. Manual agent tokens also provide folder and read/write grants for compatible clients.
Keep retrieval reviewable
Hjarni keeps notes, tags, folder instructions and attributed edit history. Ask your connected assistant to retrieve a relevant note before answering, then inspect changes. Folder instructions guide behavior but do not enforce access or ensure a tool call.