> For the complete documentation index, see [llms.txt](https://docs.spurtcommerce.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.spurtcommerce.com/api-reference/store/authentication.md).

# Authentication

- [Customer Login And Sessions](https://docs.spurtcommerce.com/api-reference/store/authentication/customer-login-and-sessions.md)
- [OTP And Verification](https://docs.spurtcommerce.com/api-reference/store/authentication/otp-and-verification.md)
- [OAuth Authentication](https://docs.spurtcommerce.com/api-reference/store/authentication/oauth-authentication.md)