grammar-reddit is released under the modified AGPL, as shown below:

grammar is released under the AGPL (Affero General Public License) version 3 with extra conditions:

If you use this software, in a derivative work, to generate content, and you distribute that content, you shall offer to provide the source code to your derivative work.
In other words, if you use this software on a different social network, you must, on your profile of that social network, provide a download to the source code.

All derivative works containing a modified version of this project must be licensed under this license.
Derivative works containing an unmodified version of this project must be licensed under the AGPL license or a compatible license.