It appears from the API Docs and searching the Dev forum that this API is available but not documented. It also appears according to the article below to not allow access to the content itself but rather a link. We would move our glossary, blog and release notes to Hubspot potentially if this API were more robust. We currently use contentful to manage content and provide API access to it.
Thank you all for posting about how you would use knowledge base APIs. I'm updating this post to "Not currently planned" - emphasis on currently! - so you know what to expect for the near future.
That said, I completely agree with @tjkns - any content in HubSpot should be available via APIs. Any action, for that matter, that you can take in the UI should also be possible via APIs (I know this opinion is shared by many, if not all, of my colleagues). Right now our teams are focused on completing some other big projects. We'll be re-evaluating priorities as these projects are completed and I will update this thread when I have more information for you.
Until then, I appreciate your patience! Upvotes and new posts about use cases are welcome, we use these posts in the Community to guide our roadmap.
Have there really been no updates on the Knowledge Base API? Five years is quite a long time, especially considering how frequently it's been requested.
This is really required for us to move content over. The KB can't be customized so it makes sense within our website, we want to pull just the content and handle display ourselves while using KB content for support flows in Service Hub.