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Yevgen Somochkin
"ΞΣΣΘ"
CTO ESSO.DEV
Building the Future of AI, Automation & Web3 | Full-stack & DevOps Architect | Scalable, Data-driven Web & Mobile Apps
Hamburg, Germany
Sovereign AI workspace: email, calendar, Rooms, files and AI
A small company in Germany wants email on its own domain, a shared calendar, a team chat, video calls and somewhere to put files, and increasingly an AI that can summarise a thread or draft a reply. The usual answer is Microsoft 365 or Google, which means the confidential part of the business lives outside Europe.
xenaxio is the alternative: email, calendar, Rooms, Meetings, files and an AI assistant in one workspace, in a cloud in Germany or on the company's own servers. By default the model is Mistral, served from the EU; on-premise it can run on the customer's own hardware too.
Each company gets its own portal under company.xenaxio.com or its own domain, with its logo and colour, and the installed app carries the company's name. Outlook, Thunderbird and Apple Mail keep working alongside it.
The platform is a TypeScript monorepo on Fastify and Postgres: the backend-for-frontend, the AI agent, the MCP server, the control plane, the company admin and the operator console. It sits in front of unmodified Stalwart, Matrix and LiveKit servers, and it is the only thing that talks to them.
The web client is a public fork of Bulwark Mail under AGPL-3.0, built as static files. It talks only to the platform's API, holds no mail credentials, and adds its own sign-in, onboarding, workspace admin and the assistant panel.
It summarises threads, drafts replies, creates tasks and runs scheduled jobs, with links to its sources, but it only ever sees what that person can see and never gets admin access to the mail server. Mail it writes stays a draft; the only things that go out are invitations and meeting updates, after the user confirms them. Every tool and model call lands in an audit log the company admin can filter and export.
Add one address as a connector in Claude or another AI chat, sign in, and handle mail, events, tasks, files, contacts, Rooms and bookings by message. The panel and the connector share one tool registry, so what the assistant may do is defined once.
Rooms is a Slack-style team chat on Matrix: channels, threads, mentions, files and push, with other companies only if you allow it. Every company gets its own chat server in its own container, with its own storage and hard CPU and memory limits. Meetings are browser video calls on LiveKit with a waiting room for guests, and customers can book a slot themselves, Calendly-style, straight into the calendar.
Stalwart for mail, Matrix for chat and LiveKit for video each sit behind the platform's own ports, and exactly one adapter package knows about each of them. CI fails the build if anything else imports one, and the agent, MCP and the web client never learn which server is behind the port.
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