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You must have access to a Bullhorn ATS account with API permissions to complete this setup.

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Providing the API user credentials

This method requires the API user’s username and password (the Username and Password fields). StackOne uses them to complete Bullhorn’s login automatically, so the connection can be established without a login page.

Note: The API user must be API-enabled and must not sign in via SSO or MFA. Avoid signing in to the Bullhorn application with this user - API user passwords never expire when used only for API access, but a direct sign-in starts a recurring expiry cycle. Bullhorn also locks accounts after 10 failed login attempts or 90 days without a successful login; a Bullhorn admin can unlock them.

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Find your authorization and REST URLs

Bullhorn uses different data centers with unique URLs. Call the loginInfo endpoint with your API username to find yours: GET https://rest.bullhornstaffing.com/rest-services/loginInfo?username=<your-api-username>

  • Authorization Server URL: the oauthUrl in the response, base URL only, for example https://auth-emea.bullhornstaffing.com
  • REST API URL: the restUrl in the response, base URL only, for example https://rest-emea.bullhornstaffing.com
1

Connect

  • Click Connect.
  • If applicable, the provider will redirect you to a sign-in or authorization page. Complete the provider’s authorization flow.
  • Once authorization is successful, you will see a confirmation popup.
2

Use Actions

Connect an AI platform to the linked account’s actions. See AI Platforms.Other ways to call actions are listed in Protocols & SDKs.