Comment by tlamponi
5 hours ago
> if you run a copyleft service and connect to it via API, is that extending it
No, it isn't; a client talking to an AGPLv3 service over a network API stays a separate program and is not touched by the license at all. Section 13 places obligations solely on whoever runs a modified version of the service, while remote users, API clients included, only gain the right to receive that service's source. So nothing on the client side must suddenly become AGPLv3, and the only thing that ever has to be shared is the AGPL'd program itself, not anything across the API boundary. The first half of your post is basically unfounded FUD; the second half tracks.
You may think this. I may think this. But what really matters is if the lawyers for your customers think this. It may be pure FUD, but AGPL projects have a tough time getting adoption in companies because they would rather avoid the problem than be wrong.
This is true, unfortunately. I've have had to walk away from a client because their software-illiterate lawyer didn't want me to build with copyleft dependencies.
It wasn't the only red flag in this case, but frustrating nonetheless.