Publishing to WordPress or a webhook
WordPress: create an application password in WordPress (Users → Profile → Application Passwords) and enter the site URL, your username and that password. Posts are created through POST /wp-json/wp/v2/posts as drafts (default) or published posts. Re-publishing updates the same post. Use Check to verify the credentials.
Webhook: we POST JSON with the article's title, slug, meta description, Markdown and HTML. The header x-draftfield-signature: t=TIMESTAMP,v1=HEX is HMAC-SHA256 of TIMESTAMP + "." + body with your signing secret.
Scheduling (times in UTC) publishes automatically at that time if the article is unchanged. Failed scheduled publishes are retried, then the article returns to Approved and admins get an email. Addresses must be public https URLs.