KAPEX by Sandstone Cloud
Layers of stone Pale layers of stone at the top, darker layers below, drawn as a cross-section.

An AI that remembers you the way a person would.

Memory middleware for the people who build those apps. It is not open for signup yet.

What it feels like

A short example. Someone talks to an app that uses KAPEX, then comes back a month later.

  • It keeps what you would want a friend to keep.Names, plans, the things you care about. Not every word you ever typed.
  • It asks before it brings something up.Some things you want remembered quietly. It checks.
  • You can see everything it remembers, and change it.Keep it, hide it, fix it, or delete it. A delete request removes the record and writes the removal to a ledger.

First week in a new apartment

Moved into the new place. Boxes everywhere and I already miss the old neighborhood.
Big change. Do you want to talk about the old neighborhood, or leave it for now?
Leave it. Tell me a decent way to unpack a kitchen.
Plates and one pan first, so you can eat tonight. Everything else can wait a week.

A month later

Finally cooked a real dinner here.
So the kitchen is unpacked. How is the new place feeling now?

It remembered the move. It did not bring up the old neighborhood, because you asked it not to. And it asked instead of assuming. Written to show the intent, not captured from a running system.

Who makes it

Three people, one small company, no venture money. We answer our own email.

Oliver La Roche

Co-founder. Builds the memory engine and decides what it should never do.

Jemell Sanders

Co-founder. Builds the apps people actually use, and keeps everything secure.

Tosin Oyewole

Talks with the people who use it and the people who want to.

Building something yourself? KAPEX is a container that runs beside your app and talks to it over REST, or through its MCP server. The Python and TypeScript clients are in the repository and are not published to PyPI or npm yet, and the image is not on a registry, so today this is the shape of it rather than something you can pull.

Read the docs

Get in touch.

There is nothing to sign up for yet: the hosted sandbox is not running and self-service signup is closed. The waitlist is how access opens. If you would rather talk first, write to us. A person reads it.

Join the waitlistWrite to us