Three ways to build
Cartridge, Layer 2 app or MCP server. Pick the surface first, they are not interchangeable.
Get your repository into memory
What the MCP server answers on its own, why there is a desktop application behind it, and how your source, your commits and your architecture notes actually get in.
Your first cartridge
Open the app, connect your coding agent, paste two prompts. Your cartridge runs inside Mnemosyne OS the same afternoon.
Connect Claude to Mnemosyne OS (MCP)
Give Claude, Cursor, Hermes or any MCP agent access to your local memory. Thirty seconds of config, zero cloud.
Connect your coding agent's memory
Your coding agent writes down the rules, traps and decisions it learns. From 1.4.3, point a vault at the folder of Claude Code, Cursor, Aider or Continue.
Tasks from your coding agent
Ask Claude Code, Cursor, Antigravity, Hermes or any MCP agent to file the tasks you just agreed on straight into your To-do widget, in order, under their steps. Nothing is ever filed under a list the agent invented.
Share your app
You do not need the store to hand someone your cartridge. A public repo link installs straight into Mnemosyne OS.
Support the project
Star the repo, post about it, join the Discord. Mnemosyne OS travels by word of mouth.