To get the API Token, open the App Settings and click “API Token” in the App Settings tab.
Click “Generate”, select the Permissions (“Add records” permission is required) and click “Save”.
Do not forget to click “Update App” to apply the update.
Guest Space ID (only when the App is in a guest space) and App ID can be confirmed in the API Token settings.
Supported field types are: Text, Number, Text area, Rich text, Radio button, Drop-down, Link, Date, Time, Date and time. To set a value in Created datetime field or Updated datetime field, “Manage app” permission is required.
Each value must be set in the data format that matches its field type. For example, to set a value in Date and time field, the input must be something like 2015-03-17T10:20:00Z. For more details see the Kintone Reference.