Turn your space into editable 3D.
Describe your room or add photos and measurements. Sepja helps you arrange furniture, try colours and materials, and save a room you can keep changing.
Your ideas. A room you can change.
Build one room or several, with custom layouts, doors, windows, furniture and appliances. Move objects yourself or work with an AI assistant. Share a space with someone else and return to earlier designs through saved edit history.
Use Sepja with your AI
Sepja provides an authenticated Model Context Protocol (MCP) server at https://sepja.com/mcp. A compatible assistant can create a saved room, edit its objects and materials, inspect references, and return a Sepja link where you can see and edit the result.
Connect through OAuth and approve access to your Sepja account. The assistant and the browser canvas read and edit the same saved scene. The open canvas checks for updates approximately every ten seconds.
Read the MCP guide and available tools or read the agent overview (llms.txt) .
The interactive 3D canvas needs JavaScript and WebGL. This overview and the MCP guide work without JavaScript. Photos provide a starting point; add measurements for a better fit.