Define your tables once, and Daptin runs the backend around them: every schema becomes a permission-aware JSON:API resource with CRUD, relationships, filtering, and pagination, plus an optional GraphQL surface over the same model. Users, groups, and row-level permissions gate who can read or change each record, with JWT login, one-time codes, and OAuth and OIDC endpoints for sign-in. Files ride along as asset columns backed by local or cloud storage through rclone, with presigned uploads and storage sync. Actions chain validation, conditions, and ordered outcomes into reusable operations, scheduled tasks run them on a cron clock as a chosen user, and state machines track each record's lifecycle with an audit trail. Changes stream out live over WebSockets and feeds, while FTP, calendar and contacts routes, and an OpenAI-compatible LLM gateway expose the same model to other tools. Plans, quotas, and metering let you charge for API and model usage from the same server. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. LGPL-3.0 licensed.