Deploy Cairn

Deploy and Host Cairn on Railway

Cairn is a self-hosted wellness OS for training, nutrition and longevity. It opens to a calm read of your day and a coach that suggests, never scores. Open source (MIT): https://github.com/zilet/cairn

About Hosting Cairn

This template runs the published image (ghcr.io/zilet/cairn:latest) on your own Railway account, with one volume at /data for everything: the database, your AI provider's sign-in and its tools. Image auto updates are on, so new releases arrive in your maintenance window.

How to use it

1. Deploy, then open the public URL Railway gives the service.
2. Sign in with the token Railway generated: the service's Variables tab, CAIRN_AUTH_TOKEN. Keep it somewhere safe; it is your recovery key. Add a passkey or pair your phone from Settings → Devices.
3. The welcome asks you to connect the AI subscription you already have (Claude, ChatGPT, Google or Grok). The coach then plans your first week.

Common Use Cases

• A daily read of what kind of day today should be, from your lifts, runs, sleep and food
• Strength and running plans that adapt to what you actually log
• Lab results connected to training and nutrition (informational, not medical advice)

Dependencies for Cairn Hosting

• An AI subscription you already have (Claude, ChatGPT, Google or Grok), connected in the app
• At least 1 GB of memory is recommended for AI coaching

Deployment Dependencies

• Guide: https://github.com/zilet/cairn/blob/main/docs/HOSTING.md
• A trial volume is 0.5 GB, enough for one AI provider. On Hobby, grow it to 5 GB (click the volume → Live Resize).

Why Deploy Cairn on Railway?

Nothing to keep running at home, a public HTTPS address out of the box, and updates that arrive on their own. Your data lives on your own Railway volume, under your own account.