Aha
Somehow I understood (hopefully) how to test the API directly. This is what I get for an image
{
"batchcomplete": "",
"query": {
"normalized": [
{
"from": "File:MICRO_FEINMECHANIK_00078_3_ebay_silvanadebego.JPG",
"to": "File:MICRO FEINMECHANIK 00078 3 ebay silvanadebego.JPG"
}
],
"pages": {
"410": {
"pageid": 410,
"ns": 6,
"title": "File:MICRO FEINMECHANIK 00078 3 ebay silvanadebego.JPG",
"imagerepository": "local",
"imageinfo": [
{
"timestamp": "2016-10-02T12:40:43Z",
"user": "Cristian.buru@gmail.com"
}
]
}
}
}
}
Still, no trace of the summary field information...