Ask HN: Has anyone had success with LinkedIn APIs?

Howdy folks. Has anyone here had success with using LinkedIn APIs to utilize people's Linkedin profile information?

What do I mean exactly? Looking to see if anyone has had success finding LinkedIn APIs to:

1. Pull profile information such as name, company, work history, education (currently, you can do this as a PDF download, but it requires users to manually do this)

2. Pull company information on their company LinkedIn page such as the 'About' section and website

Has anyone had success finding LinkedIn APIs to do this? If so, what did you have to do to get access?

Thank you!