Flagon: We build software in the open.

Flagon is open source and runs entirely on your own infrastructure. Nothing about the platform requires the hosted service.

What you run

Flagon is a few services around one Postgres database:

app the web UI and gateway.
api the source of truth: it owns all data and logic and hosts the assistant and the MCP server.
packages/ui the shared design system.

The API enforces tenant isolation in Postgres itself, so your data stays separated even if application code forgets to scope a query.

Running locally

One Postgres instance in Docker, with the services run directly:

docker compose up -d postgres
cd api && go run ./cmd/flagon serve
cd app && npm install && npm run dev

That is enough to bring the platform up with sane local defaults. The assistant works locally with no keys against an offline mock, and points at a real model once you configure one.

Going further

Full deployment guidance (managed Postgres, secrets, running the services in production) is being written. For now, the source and its setup live in the repository; see Contributing to get oriented.