DayMug is an open-source workspace for Claude and Codex that you host yourself — shared by your whole team on laptop, phone or tablet, and right inside your chat apps. Together. In sync. Yours to keep. Pour one and pass it around.
AI is amazing when you're alone with it. DayMug makes it amazing when you're not. Bring everyone into the same conversations, pick up where someone else left off, keep your work close at hand.
Give every person their own AI — with its own name, its own job, its own rules about what it can touch. Set up a skill once and the whole team can reach for it — no copy-pasting prompts between teammates.
See the answer arrive as it's being thought of — including the thinking. Two people can watch the same conversation at once. Stop it mid-sentence, slip in a correction without starting over, or hand it to a colleague and pick up later from another device.
Conversations, files, history — they all live on a computer you choose. No tracking, no middleman, no surprise bills. Updates land with one click, and you can go back if something feels off.
Open it in any browser — laptop, phone, tablet, the cafe screen. Nothing to download. The conversation you started on the couch is still right there when you sit down at your desk.
Put an agent in Slack, 飞书, Telegram or 微信 and talk to it there. Each thread keeps its own memory, replies stream into the message as it works, and the same conversation is waiting in the browser when you want the bigger screen.
Claude and Codex both work, side by side, picked per conversation. Share one subscription across the team and the next person waits in a visible queue, or give everyone their own. Agents can be fenced into a single folder so nobody wanders into someone else's files.
Your conversation on one side, the files being worked on right beside it. Switch between your agents with a click. See what's happening in real time — no need to ask "did you change that yet?"
From signing up to your first conversation in about a minute. Nothing to read, nothing to memorise — you'll figure it out as you go.
Choose an agent for the job. Define its role, and decide exactly what it's allowed to touch.
Point each conversation at a folder. Pick a different one next time — every conversation stays in its own lane, with no spill-over between projects.
Type what you want and watch the answer come together. Hand it off to a teammate, or pick it up later from another device — the conversation is waiting where you left it.
The whole thing is on GitHub. Download a release or build it yourself — a Go server with the web app embedded and SQLite inside. No Docker, no external database, no cloud account.
# 1. prerequisites: Node.js 18+ and the Claude Agent SDK $ npm i -g @anthropic-ai/claude-agent-sdk # 2. install into ~/.daymug (runs as your user, not root) $ curl -fsSL https://daymug.com/install.sh | bash # 3. put your username under admin.bootstrap_usernames $ nano ~/.daymug/config.yaml # 4. start it and open http://127.0.0.1:8090 $ systemctl --user start daymug.service
One-line installer, first admin, then your own domain or LAN only.
install.html → 02 · configWhere the file lives, how to change it safely, recipes, and every field explained.
config.html → 03 · providersConnect Claude, Codex or a compatible endpoint, log in from the browser, set prices.
providers.html → 04 · chat appsSlack, 飞书, Telegram and 微信 setup, channel rules, allow-lists, bot hand-offs.
im-bots.html → 05 · accessInvite the team, sign in with OIDC, and fence each agent into its own folder.
security.html → 06 · operateOne-click upgrades with rollback, logs, backups, and fixes for common problems.
operations.html →Short answers to the things people usually wonder about. If yours isn't here, drop us a line.
AI on its own forgets. DayMug remembers — your conversations, your files, what your team has been working on. It's the difference between asking a stranger and asking a colleague who knows the room.
And because it's a website, you don't need to learn anything new. Open the link, talk to your agent, hand the conversation to a teammate when you're done.
On a computer you choose — conversations, files and history sit in a SQLite database and folders on that machine. There is no telemetry or analytics. DayMug only talks to the AI providers and chat apps you connect, plus the release server when an admin checks for updates.
Yes — DayMug works with whatever AI plan you're already on. Claude and Codex both plug in, and you can run them side by side, choosing per conversation. We don't sell credits or stand between you and your agent; DayMug just adds the friendly room around it.
Yes. If one teammate is using it, the next one waits in a polite line — and they can see how soon they're up. Or give each person their own account if you want stricter separation. Whatever fits.
Yes. Point an agent at Slack, 飞书, Telegram or 微信 and it answers there — each thread is its own conversation with its own memory, and the reply fills in as it works. Nothing is exposed to the internet to make this happen: DayMug dials out to the chat service, so it works from a laptop behind a router.
The same conversations are in the web app, so you can start something in a thread and finish it on the big screen.
Yes — open it in your phone's browser and you'll get a layout made for the smaller screen. Catch up from the train, the couch, the queue at a cafe. The conversation is the same one you started on your laptop, just sized for your hand.
Five minutes to set up. Zero minutes to learn. Open source, on your own machine — for the whole team.
