Which demos do you mean?
Yes, I’m using it on a website with 100k+ visits per month.
It’s a WordPress plugin, so no other CMS.
I think his issue is the new Guttenberg editor breaks the forms and as such the plugin no longer functions.
Shame I only just found this as there appears to only be one other plugin like this.
Thanks for reporting. A PR is welcome! 
「いいね！」 1
Can I create something like additional field/excerpt and export it as an JSON ?
that is, for example instead of the whole post i would like to have content that is in a new separate field ?
button -> create new topic
Type title:
Custom field: —> json
category/tags:
content
If you can retrieve the data needed with a SQL query through Data Explorer plugin, then you can read it as JSON with this plugin as well.
Not sure if you’re still maintaining this plugin, but I submitted a PR to support the header-based API authentication required in 2.5
「いいね！」 6
プラグインをオープンソース化しましたが、人々からの関心が低いため、開発を中止しました。
プラグインの現在の状態は不明ですが、以前はそれが可能でした。
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