Is there a public API to retrieve Trailhead module data and metadata?

Hi everyone, 

I am currently working on a personal project and I'm looking for a way to programmatically fetch data regarding Trailhead content. 

Specifically, I am trying to access metadata for modules and trails, such as:

• Module titles and descriptions
• List of units within a module
• Estimated time and points
• Tags, roles, or level categories

I am aware of the APIs used to fetch user profile/badges data, but I haven't found official documentation for a public API that provides the learning catalog or module metadata

itself. 

Does Salesforce expose a REST API for this? If not, are there any known workarounds or specific endpoints that the community recommends for accessing this data? 

Thanks in advance for the help!