This page will help you get started with Awesome New API.
Lead Assign API
Base Url & company_slug
All required API information can be accuired by logging into the application (ie login as a company admin to app.leadassign.com)
company_slug indicates the company that you want to send leads into, you can see your company_slug in the url after you login to the site.

The Base URL will be before the '/'. The Company Slug will be immediately after and go until the next '/'
X-Auth-Token
Visit – https://app.leadassign.com/company_slug/apikey/ – this is also accessible in the “Integrations” tab. If you need to refresh your auth token, please contact support. Refreshing your auth token will stop all older API endpoints from working.