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Cosmos vs Claude Projects.
Claude Projects help organize a Claude workspace. Cosmos is a local app and MCP server that indexes your projects and notes on-device for multiple tools.
Different layers
Claude Projects are useful inside Claude. Cosmos is a local memory layer underneath your AI tools, designed to expose codebase context and project lessons through MCP.
Choose Cosmos when
- You want memory shared across AI coding clients.
- You need local code indexing and runtime lessons.
- You want to keep project context on your machine by default.