Libcubescript is provided to you under the terms of the zlib license, just like the source it was originally derived from.
The software is originally based on the CubeScript implementation in the Cube 2 game/engine, which by now serves mostly as an inspiration, as the code has been largely rewritten (though isolated bits of the original source may remain).
For copyright holders beyond just CubeScript, please refer to Cube 2's original license file.
This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
Libcubescript bundles the linenoise line editing library for REPL usage. This library is available under the BSD 2-clause license, which is available within its source code.