Need access to Archicad 9 API / SDK documentation for porting project to Archicad 29

[Steve Sunny]

I’m currently porting an old Archicad add-on from version 9 to version 29. Unfortunately, I no longer have access to the Archicad 9 API / SDK documentation or header files, and I can’t find any official source online.

Could you please advise if there is any way to access or request the Archicad 9 Developer Kit (DevKit) or its documentation?
Even archived or read-only materials would be very helpful for understanding API changes and migration paths.

Thanks in advance for your help!
@ Akos Somorjai

[Ralph Wessel · Accepted solution]

Archicad 9 - that's a blast from the past! I still have some old archived dev-kits - I've attached what I believe is the right version. I believe the dev-kit version was 6.1 (for AC9).