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Memory for your AI.

Mind Layer is open source. It stores memories and personality settings for AI characters and agents, so they can use that context in later conversations.

Run it on your own machine and connect your model. The standalone edition is Apache-2.0 and needs no Sonzai account.

See what Moss remembers.

Tell Moss a fact, correct it, and inspect the context behind its reply.

MossA conversation with memory
You

My greenhouse is Fern House. I want to grow basil.

Illustrated example · Actual recorded reply

Keep the context between conversations.

A model can use an earlier conversation only when your application supplies the context. Mind Layer stores facts and retrieves relevant memories for a later reply.

Use the REST API or Go library for a personal assistant, a game character, or an agent that needs a history with its users. Keyword retrieval runs locally; model replies and semantic search need a configured provider.

Set it up with your coding agent

Paste into ChatGPT, Claude, or any coding agent.

Our work

Sonzai builds games and AI characters. Mind Layer grew out of that work.

Pocket Souls

AI companions with memories of the conversations you share.

Mind Layer

The memory and personality software behind our character work, now available as a standalone edition.