







Web server applications can use Google API Client Libraries or Google OAuth 2.0 endpoints for OAuth 2.0 authorization to access Google APIs.
Overview | Web guides | Google for Developers
Sign in with Google provides quick and secure user authentication on your website by allowing users to sign in with their Google Account and share profile information.

OAuth 2 in Action
Master OAuth 2! Securely build clients, authorization servers, and resource servers with this practical guide.

OAuth API - Home
The Apigee OAuth API gives you a keychain for authenticating to Twitter, Salesforce, Salesforce Chatter, Facebook, Flickr, and Foursquare. Thousands of developers complain about the complexity of using OAuth. Now you can easily authenticate in one consistent way across several APIs and build apps faster.
OpenAPI 3.x Extensions in API Gateway | Google Cloud Documentation
API Gateway accepts a set of Google-specific extensions to the OpenAPI specification that configure the behaviors of the gateway. These extensions allow you to specify API management settings, authentication methods, quota limits, and backend integrations directly within your OpenAPI document. Understanding these extensions helps you tailor your service behavior and integrate with API Gateway features.
googleapis/google/cloud/secretmanager/v1 at master · googleapis/googleapis
Public interface definitions of Google APIs. Contribute to googleapis/googleapis development by creating an account on GitHub.
Gmail API overview | Google for Developers
The Gmail API is a RESTful API that can be used to access Gmail mailboxes and send mail. For most web applications the Gmail API is the best choice for authorized access to a user's Gmail data and is suitable for various applications, such as:

OAuth — The Open Standard for Authorization
The open standard for authorization on the web. Find what you need:
The OAuth mechanism and its most common flows
Every single time when you want to sign in to an application and you click on “Login with Google”, you are starting a protocol called…




What is OAuth?
Wherein I [try to] answer a seemingly straightforward question: "WTF is OAuth, anyhow?"
API design guide | Cloud API Design Guide | Google Cloud Documentation
A set of guidelines for designing APIs that are consistent with Google AIPs.
How to handle granular permissions | Authorization Resources | Google for Developers
Granular permissions give users more control over the specific data they share with apps, improving transparency, security, and trust.

3) it still doesn't fully cover all use cases well or at all 4) bsky.app still didn't manage to implement OAuth at all Yes, we should all be moving to OAuth w/ scopes, that's the goal, but give people some slack, it's all still rather fresh, we'll get there… (yes, it's me, I'm those people)