BrowserStack SSO Authentication and API Access Key Interoperability for Least-Privilege Automation

Answer

BrowserStack does not provide a public endpoint that exchanges SAML/OIDC assertions from SSO for short‑lived, scoped API tokens. Authentication for the REST API relies on a static username/access‑key pair that remains valid until manually rotated.

Confirmed facts

• The BrowserStack API documentation shows authentication via basic auth using the account username and the access key.
• SSO integration is documented only for dashboard login; no token‑exchange endpoint is listed in the public API reference.
• Role‑based permissions (Admin/Member) are coarse‑grained and apply to the UI and API equally.

Likely explanation (needs verification)

Enterprise‑grade contracts may expose an internal OAuth2 token endpoint that accepts a SAML assertion or JWT, but this feature is not advertised in the public docs and would require contacting BrowserStack support or checking account‑specific documentation.

Recommended steps for least‑privilege automation with static keys

1. Create a dedicated BrowserStack user for automation and assign it the minimal role (Member) needed for the required API calls.
2. Store the access key in a secret manager (e.g., HashiCorp Vault, AWS Secrets Manager, GitHub Secrets) and reference it at runtime.
3. Restrict the key’s usage to specific IP addresses or CI runner ranges if your plan supports IP‑based access controls.
4. Rotate the key regularly (e.g., every 30 days) and use a dual‑key validation window during rollout to avoid pipeline failures.
5. Verify permission boundaries by invoking representative endpoints:
   • Low‑privilege call: GET https://api.browserstack.com/automate/builds/.json (should return 200).
   • High‑privilege call: GET https://api.browserstack.com/subscriptions/plans.json (should return 403 for a Member role).
   Record the HTTP status codes and compare them to the role matrix in your dashboard.

Missing diagnostic detail

If you are on an Enterprise/BrowserStack Enterprise plan, confirm whether a private token‑exchange endpoint is available by contacting BrowserStack support; this would change the recommendation from static‑key hardening to using short‑lived SSO‑derived tokens.