The @nylas/connect SDK simplifies the OAuth 2.0 authentication process for developers creating web applications that require access to email, calendar, and contacts. It abstracts away the complexities of handling PKCE code challenges, token exchanges, and grant creation, providing a streamlined, zero-boilerplate API interface. With features like a popup-first user experience, automatic authorization code exchanges, and compatibility with modern web frameworks, the SDK facilitates secure, frontend-only integrations by generating a grant object that authorizes applications to access user data with specific permissions. This is achieved without the need for managing redirect routes or storing client secrets, as PKCE ensures secure authorization flows for public clients. The SDK supports extensions like sending emails and integrating notetaker bots, while the entire process is designed to maintain a simple, TypeScript-friendly surface area for developers, making it ideal for those looking to avoid implementing complex OAuth mechanics manually.