"Self-hosting requires implementing your own backend"

No. Self-hosting is one Docker image: docker run ghcr.io/ambroselli-io/i18n-keyless. It runs the same server as i18n-keyless.com — the API, the dashboard and the MCP server — on SQLite or Postgres, with the AI provider of your choice. Set API_URL in the SDK's init and nothing else changes. Fully free, unlimited projects, donations optional. Guide: Self-hosting.

The "implement these routes" section in some documentation describes a separate, advanced feature: plugging the SDKs into a custom backend you write yourself. That is not the self-host path.