a memory your agents can work from.

on your device, owned by you.

sol and your journal, all yours: sol lives on your devices, experiences your day with you, and keeps it all in your journal — the memory your agents can finally read. open source, local-first. your journal is always private, only yours.

every agent you run inherits nothing. every session starts cold. your journal changes that: your projects, the people, what you decided last time, context your agents can work from. none of it leaves your control. and it's just files: dated folders of plain markdown and json you can read, grep, and back up yourself. no proprietary format, no database lock-in.

solstone is the platform. sol is the app. the journal is the memory it keeps.

open source and yours. your journal always lives on your device, and how sol thinks is your choice — local by default. sol pbc can never sell your data, and any future acquisition is conditional on the successor being legally bound to preserve the same protections. these aren't promises; they're irrevocable covenants in the articles of incorporation.

early days. solstone is open source and hands-on, so expect time in the terminal and a few rough edges as we build.