Translations:Frequently asked questions/46/en
From Pixelmon Wiki
How do I access the Pixelmon source files?
Pixelmon is closed-source, so source files are not available to the public.
Can I develop a sidemod for Pixelmon?
It is possible to reference the Pixelmon JAR to develop a Pixelmon sidemod, but the Pixelmon API is not currently documented because Pixelmon is closed-source. If you wish to ask questions about the Pixelmon API, visit the Pixelmon Discord.