David here, from the Zapier Platform team.
I see that we support Bullhorn CRM and there's a trigger for new candidate. The easiest thing for you is probably to write into contact@zapier.com
and ask that we get an "updated candidate" trigger added.
Separately, if you do want to make a webhook trigger manually, you'll need to get an auth token manually. I'm not familiar with Bullhorn's auth specifically, but usually for OAuth2 this involves the following:
- Create an "app" on the site
- Manually go through the auth flow w/ Postman or curl and get a token
- Include that token (either in the header or as a query param, whatever the docs say) with requests
If you're lucky, there's a "generate testing token" on the app page that will give you a token that just works.