The AI memory you can see.

Crystalbrain gives the AI in your product a separate memory for each of your customers, and a dashboard where you see, fix and organise everything it knows about them.

Join the early accessFree while in beta.

One memory per customer.

Each of your customers gets their own brains. Your AI never mixes one customer’s context with another’s.

You see everything.

Every memory, decision and document, per customer and per topic. Who wrote it, when, and how often your AI used it.

You fix it in one click.

A wrong fact, an outdated preference: edit or archive it. Your AI follows on the next request.

Your AI stops treating customers like strangers.

Step 1

Connect your AI

Two API calls, search and save, with your customer’s ID. Or an MCP link for Claude.

Step 2

It learns each customer

Conversations become short, structured memories: starting points, conclusion, reasoning. Filed in the right brain automatically.

Step 3

You stay in control

See all your customers in one admin view, analyse what is used, export to Excel, and correct anything the AI got wrong.

No memory infrastructure to build.

Pass your customer’s ID on each call. Unknown customers are created on their first save; searches never cross customers. Embeddings, deduplication and structuring are handled for you.

REST API with one key per account, or an MCP server for Claude and other assistants.

POST /api/v1/save
{ "user": "cus_123",
  "type": "decision",
  "title": "Invoices in EUR",
  "content": "...",
  "source_text": "..." }

POST /api/v1/search
{ "user": "cus_123",
  "query": "How do I invoice them?" }

Early access.

Free while in beta

For solo founders and SaaS teams that put AI in front of their customers. We onboard a few products at a time.