And Now a Question

Works fine for me, under meta section. If no custom fields are there, meta will be empty.

Actually I think the problem is that I am using the ACF Plugin (https://www.ads-software.com/plugins/advanced-custom-fields/) and, I assume, those values are not stored as regular custom fields.

They are stored alongside the usual custom fields, inside wp_postmeta table. Only ACF adds an extra key-value pair to its fields:

meta_id    post_id    meta_key        meta_value
    1607       XX         testimonial     YY
    1608       XX         _testimonial    field_5177d30141f17

Interesting. Well that is good to know, but even still my ACF values are not in the JSON object returned. I’ll keep investigating.

This may be related to issue #10, can you confirm it’s fixed in 0.7?

Confirmed! The issue is resolved. Thanks for the update.

resolved