Proxycurl does not have an API endpoint that mirrors the search functionality you get in Linkedin after signing in. The reason is that we only scrape public pages on Linkedin that do not require a user session.
But, we do have search. Given that we provide developer tools as a service, we do not provide keyword search because it is too general. For example, how can you search for the following with keyword search:
Find me all CEOs based in Boston that have volunteering experiences
Instead, we offer LinkDB, a database of pre-crawled Linkedin profiles for which you can perform "searches" by executing SQL queries.