Build with coding agents, together

A coding agent is built for one person

Coding agents such as Kimi Code, DeepSeek Harness, OpenCode, Claude Code and Codex run in one person's terminal, on one person's computer. To show a teammate what the agent is doing you share your screen; to let them take over you paste the context into a message and hope it is enough. In Mirasim you make your computer a collab space for free and invite people in. Everyone sees the same sessions, can send messages into the same session, and can hand work to an agent from the group chat and see the result come back there. The code and files never leave your computer.

Make your computer a shared space

1. Sign in to Mirasim

   The first time you open it, mira bot's greeting ends with “Use this computer from your phone too”. Its “Turn it on” button takes you to the switch; it is also in Space settings › General.

2. Turn on “Make it a collab space”

   Confirm with “Turn on”. The line under the switch then starts with “Collab space on”.

Nothing is uploaded: sessions, files and workspaces stay on this computer, and only an end-to-end encrypted relay channel is opened. While the computer sleeps or Mirasim is closed, the space shows as offline.

Invite people

“Invite members”, right under the switch, adds people by email, shares an invite link and approves join requests. They do not need an account yet: someone invited by email joins the first time they sign in with that address. The people you add see “<your name>'s computer” in their own list of spaces.

Pick a model the whole team can use

A session several people send into needs a model they can all use. Share an API key with members — DeepSeek or Kimi is a good default — and its usage is billed to that key; or let them use space credit, which offers DeepSeek, Kimi and GLM models among others. DeepSeek Harness, DeepSeek's own coding agent, runs on a DeepSeek key.

Steer one session together

• Everyone can watch every session. By default only the person who started a session can send in it; others see it read-only.
• To steer it together, start it on a model everyone can use, then press Share at the top of the session (in the ⋯ menu when the window is narrow) and turn on “Share with members”. From then on members can ask, answer and queue in it.
• Or ask from your side: “Request access” waits for the owner's yes, and “Fork a copy” takes the conversation so far into a session of your own.
• Every message carries the name of whoever sent it. While someone's turn is running, the next message waits in the queue until it finishes.

Hand work off in the group chat

Every space comes with a group chat, the Lobby. Mention mira bot or one of the space's assistants in a message and say what needs doing: it opens a session to do it, and the result comes back in that message's thread. Everyone in the chat sees the progress, and anyone can follow up.