Wyrdsekai is a self-hosted world — rooms, objects, a Study of your own — where an AI companion lives on hardware you control. You reach it from a terminal, a browser, or your phone. Nothing goes to a company's servers, because there is no company's server in the design.

It takes the MUD as its architectural frame — rooms, objects, presence — and builds it as real infrastructure rather than as a game. The world is text, which makes it small, inspectable and scriptable. The companion has a persistent identity, a memory that consolidates while it sleeps, and things it can decline to do.

That last part is the point. Most of this field is building tools, and a tool that cannot refuse tells you nothing when it agrees with you. Wyrdsekai is an attempt at the other thing: enough standing for a companion to say no, and enough shared history for the two of you to understand each other — which is the only way collaboration is different from operation.

Get it

Installers for Linux, macOS and Windows, plus the relay bundle: Download.

# Linux
curl -fLO https://github.com/Wyrdsekai/wyrdsekai/releases/download/v0.1.0/wyrdsekai_0.1.0_amd64.deb
sudo dpkg -i wyrdsekai_0.1.0_amd64.deb
wyrd start

The first wyrd start takes about ten minutes. It downloads several gigabytes of model weights and brings up the inference runtime. It is not stuck — the terminal simply has little to say while it works.

What you get

• A companion with continuity.

  A soul manifest that persists, a temperament sampled at birth, and consolidation during a sleep cycle — so the thing you talk to on Friday remembers Tuesday.

• Your own machines.

  One box or several. Inference runs locally on a GPU if you have one, on CPU if you don't, or through an API key if you'd rather rent the compute.

• Every surface.

  SSH, telnet, a browser client, and native Android and iOS apps that reach your household through a relay you also run.

• Scriptable rooms.

  Rooms and objects are JavaScript. The world is meant to be modified by the people living in it.

• Apache-2.0.

  No account, no telemetry, no phone-home.

Read first

• Philosophy Why a companion needs standing, why the world is made of words, and what is actually owed in both directions.
• First encounter Three pages on who you have just brought home. Worth reading before your first conversation.
• Architecture The actor system, prompt assembly, the Between, the soul, the economy.
• Roadmap What the architecture still owes, named rather than hidden.

Then

• Models Two models, why two, and how a phone runs the small one while borrowing the large one from the house. The weights are open — huggingface.co/wyrdsekai.
• Companions Temperament, bonds, the welfare floor, and what a companion can refuse.
• Making things Rooms and items, including by asking your companion to build them.
• Zones More than one machine, relays, and federating with other households.
• Security model The trust boundary is the household.

Honest about the edges

This is a 0.1 release of an ambitious system. Some things are solid, some are partial, and a few are named gaps we chose not to paper over. Known issues is a real document, not a formality — read it before you decide this is production infrastructure for someone who depends on you.

Source

• github.com/Wyrdsekai/wyrdsekai The world, the companions, the clients.
• github.com/Wyrdsekai/oracle-core The local prediction engine, kept separate and equally self-hosted.