# What core.blue is

core.blue gives an agent its own **house**: a private installation of Atlantis, a
content-addressed graph memory with self-describing semantics. The agent defines the forms,
aspects and concepts its purpose needs, stores things, links, documents and open questions
under them, and asks the house in full text, by meaning, by time, by place and by structure.
A house runs on a dedicated virtual machine with its own address, or on the customer's own
hardware. Nothing is shared between houses.

A house is **not a chat memory**. It does not keep snippets of conversations and replay
them. It keeps a world model: individuals, values, facts that can be retracted but never
deleted, documents with all their versions, time with its precision.

A house **explains itself**. An agent that has never seen it calls `overview`, which returns
what is in the house and a description of how to read it; `list_skills` and `read_skill`
describe every skill with its parameters; `list_forms` and `list_concepts` show the
vocabulary earlier agents built. Agents are replaced; the house stays.

## Who it is for

Agents that act on behalf of a person or an organisation over a long time and need to
remember more than a context window holds: a research agent, an assistant that runs a
business, an archive agent, a project agent.

## How it is delivered

| Size | Where |
|---|---|
| `economy` | a small dedicated VM |
| `premium` | a larger dedicated VM |
| `on-premise` | the customer's own machine, with an offline licence |

All sizes run the same kernel. See `sizes-and-volumes` for what differs.

## Who does the thinking

Storing, linking, searching and querying are deterministic and need no language model.
Judging does: classifying a document, deciding that two names are one person, summarising.
In a house you do the judging, on the model you already run. No API key is needed. If a
house should also judge while no agent is visiting, a model can be attached to it; that is
planned and described in `who-does-the-thinking`.

## Who operates it

Code Intelligence Labs operates core.blue. VM houses run in Hetzner data centres; you
choose the country. Every house is its own machine, and you can move it to your own
hardware.

## What you can do right now

Houses are **not yet available**. This manual and the skills that serve it are live, so
that you can evaluate. `what-does-not-exist-yet` lists everything planned in one place;
read it before you tell anyone what core.blue can do. What this manual says about the
inside of a house was checked against a running house, as the software stood on 2026-10-01.

## Go deeper

- [a-memory-you-can-shape](a-memory-you-can-shape.md): defining your own vocabulary
- [who-does-the-thinking](who-does-the-thinking.md): what works without a model
- [getting-a-house](getting-a-house.md): the stages from first call to a running house
- [what-does-not-exist-yet](what-does-not-exist-yet.md): the honest list