Integrating other systems with Calibre server

ainent · 10-09-2018, 01:29 AM

Hello,

If another system interfaces with Calibre only via the REST API, is it required to be licensed under GPL as well?

What about if it consumes the data generated by Calibre, such as by parsing its data stored in Dropbox?

kovidgoyal · 10-09-2018, 03:53 AM

The GPL does not apply to data or API usage, only distribution of the software itself.

ainent · 10-09-2018, 01:45 PM

Ok, thanks for the info.

Will it need to have any attribution or a “not affiliated with nor endorsed by Calibre” disclaimer or anything like that?

kovidgoyal · 10-10-2018, 12:02 AM

If you are using calibre branding for your product, then yes such a disclaimer should be there. If you are simply usning calibre as a backend that the users of your product are unaware of, noneed.

kovidgoyal · 10-10-2018, 12:03 AM

And I should add, that if you are using calibre as a backend, while not legally required, it would be polite to add some text to your products help/about indicating that it uses calibre at the backend.

ainent · 10-10-2018, 12:39 AM

Will do, for both the disclaimer and the help/about text

If anyone is interested, I’m building an alternative to Calibre Companion for iOS.

10-09-2018, 01:29 AM	#1
ainent Member Posts: 23 Karma: 10 Join Date: Oct 2018 Location: US Device: paper books, iPad, iPhone	Integrating other systems with Calibre server Hello, If another system interfaces with Calibre only via the REST API, is it required to be licensed under GPL as well? What about if it consumes the data generated by Calibre, such as by parsing its data stored in Dropbox?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
calibre-server OPDS catalog - manual move to web server	HaakonME	Related Tools	5	09-21-2012 03:11 AM
500 Internal Server Error accessing content server Calibre 0.8.8	DaddyO57	Calibre	1	07-20-2012 06:08 PM
Seeking recommendations for integrating Calibre database with the Pocket Pro folders	Xochipilli2012	Astak EZReader	7	03-06-2010 12:25 PM
Integrating Content Server with existing webserver?	mmseng	Calibre	3	01-14-2010 10:08 PM
Integrating Readability/TidyRead with calibre news fetching	strico	Calibre	1	09-18-2009 12:54 PM

10-09-2018, 03:53 AM	#2
kovidgoyal creator of calibre Posts: 43,826 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	The GPL does not apply to data or API usage, only distribution of the software itself.

10-09-2018, 01:45 PM	#3
ainent Member Posts: 23 Karma: 10 Join Date: Oct 2018 Location: US Device: paper books, iPad, iPhone	Ok, thanks for the info. Will it need to have any attribution or a “not affiliated with nor endorsed by Calibre” disclaimer or anything like that?

10-10-2018, 12:02 AM	#4
kovidgoyal creator of calibre Posts: 43,826 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	If you are using calibre branding for your product, then yes such a disclaimer should be there. If you are simply usning calibre as a backend that the users of your product are unaware of, noneed.

10-10-2018, 12:03 AM	#5
kovidgoyal creator of calibre Posts: 43,826 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	And I should add, that if you are using calibre as a backend, while not legally required, it would be polite to add some text to your products help/about indicating that it uses calibre at the backend.

10-10-2018, 12:39 AM	#6
ainent Member Posts: 23 Karma: 10 Join Date: Oct 2018 Location: US Device: paper books, iPad, iPhone	Will do, for both the disclaimer and the help/about text If anyone is interested, I’m building an alternative to Calibre Companion for iOS.