There are the following options:
Connect your CMS in Menu -> Connect my Blog if your CMS is in the list
Use Webhooks. SEObot provides two events: created and updated for articles. You can assign the same or different webhook URLs. Use Menu -> Connect my Blog -> Webhooks. Check out the Article Data Structure.
Use the REST API to create a custom integration. Refer to the npm package and check out the Next.js integration example. Use Menu -> Connect my Blog, and select REST API.
Use the Copy RichText/HTML/Markdown options in the SEObot editor to manually copy and paste article content.
Note: You can connect your blog through Menu -> Connect my Blog if no integration exists, otherwise you'll see Menu -> Blog Sync Status where you can manage the existing connection.