The 1911 text itself is public domain, so anyone is free to use it.

What I’ve built here is a structured edition — the parsing, reconstruction, linking, indexing, etc. I haven’t published a formal license for that yet.

For casual or small-scale use there’s no issue at all. For bulk use (e.g. dataset / training / redistribution), I’d prefer people get in touch so I can figure out a sensible way to support that.