AZBox TV API is released by OpenSat:

To all developers,

Here is the AZBox TV SDK, with it you can manage:

* Channel List
* EPG
* Reserved Recordings
* Reload files

From your plugins

To reload the channel list without reboot you just need to call:
Code:
#define TVSDK_SYNC_ID_NONE 0
#define TVSDK_SYNC_ID_CHANNEL 1
#define TVSDK_SYNC_ID_EPG 2
#define TVSDK_SYNC_ID_RESERVED 3

err = TVSDK_Sync(TVSDK_SYNC_ID_CHANNEL) ;

http://azbox.com/forum/viewtopic.php?f=38&t=1143