Talk to Alice, on your own keys.

Alice is not a chatbot with a long prompt. She runs on a graph that accumulates what you actually said, narrows it to what matters for the message in front of her, and hands the model only that. Tell her something in March and she still has it in December.

The part that matters here: it runs on your keys and your database. Your conversations land in a Neo4j instance you own, and the thinking is billed to your own Anthropic account. Nothing of yours sits in anybody else's database, including ours. That is the whole arrangement — it is why there is no per-message price.

What you need first

Three things. All three have a free tier, and none of them need a card.

ONE
An Anthropic API key — this is Alice's voice and reasoning.
console.anthropic.com → API keys → Create key. Starts with sk-ant-.
TWO
A Google Gemini API key — this is how she finds a memory by meaning rather than by keyword.
aistudio.google.com/apikey → Create API key. Optional: without it she still remembers, she just searches by keyword instead of meaning.
THREE
A Neo4j database — this is the memory itself, and it stays yours.
neo4j.com/cloud/aura-free → create a free AuraDB instance. It shows you the password exactly once, so keep the file it offers to download — you will need the URI, the username and that password.

Then

Press the button. You get an account and a key straight away — no card, no checkout. The next page is where you paste those three things, and it checks them against your database before it accepts them, so a typo fails there rather than halfway through your first conversation.

After that there is a Test my brain button that writes a fact, asks for it back, and deletes it — proof she remembers before you have said anything real to her. Then Continue to Alice hands you over and you are talking.

Required. It is how we reach you if your brain stops working — which is the one failure you would not otherwise notice, because Alice keeps answering normally when her memory goes. It is also the only way a lost key can be replaced. We keep it, we will occasionally write to you about the product, and you can ask to be removed at any time. See terms & privacy.

Your keys are encrypted and used only to answer your turns; your conversations are written to your database, not ours. Terms & privacy.

Anything goes wrong, email alice@13rt.com — a person reads it and replies.

Building an app rather than looking for a companion? The same brain is an HTTP API — start here instead.