# Docs by LangChain: LangSmith REST API

> Markdown index of the LangSmith REST API documentation.

## LangSmith REST API

- [Login](https://docs.langchain.com/langsmith/smith-api/auth/login.md)
- [Send SSO email confirmation](https://docs.langchain.com/langsmith/smith-api/auth/send-sso-email-confirmation.md)
- [Check SSO email verification status](https://docs.langchain.com/langsmith/smith-api/auth/check-sso-email-verification-status.md)
- [Confirm SSO user email](https://docs.langchain.com/langsmith/smith-api/auth/confirm-sso-user-email.md)
- [Get SSO settings](https://docs.langchain.com/langsmith/smith-api/auth/get-sso-settings.md)
- [Lookup SSO by email](https://docs.langchain.com/langsmith/smith-api/auth/lookup-sso-by-email.md)
- [Get public auth info](https://docs.langchain.com/langsmith/smith-api/auth/get-public-auth-info.md)