While LibraryFind has always supported SOAP, LibraryFind 0.9 will finish the process of adding json apis for all the SOAP based apis. This process started in LibraryFind 0.8.5.3 and continued in release 0.8.5.8 — but will be finished with 0.9. I’m working up documentation for the Json calls (which basically emulate the SOAP calls for simplicity), so I’ll post the link once its finished.
–TR