What are the main features of stack-auth/stack-auth?

The main features of stack-auth/stack-auth are: Authentication-as-a-Service, Team Member Management, Team Member Invitations, Webhook Delivery, Webhook Event Receivers, Team Management, Team Creators, Team Deleters.

Stack Auth | Awesome Repos

Stack Auth is an open-source authentication and authorization platform that provides pre-built UI components, OAuth integration, team management, and session handling for web applications. It offers a complete authentication lifecycle covering sign-in, sign-up, session management, password recovery, and multi-factor security, with support for passkey authentication and OAuth providers including Google, GitHub, and Apple.

The platform includes a team-based permission system with role-based access control, allowing users to be organized into teams with granular permissions for membership management and resource access. It provides server-side session management with cookie-based token exchange, API-key-based authentication for programmatic access, and webhook event delivery with signed, tamper-proof HTTP callbacks and automatic retries. The system also captures client-side analytics and session replays for debugging and usage analysis.

Beyond authentication, Stack Auth handles billing and payments with support for subscriptions, one-time charges, and usage metering for individuals or teams. It includes an email notification system with customizable templates, themes, and user-controlled preferences, along with data storage capabilities for JSON metadata and encrypted secrets on user and team records. The platform offers a production mode with a pre-launch checklist for domain setup, callback locking, and secret rotation.

Features

Authentication-as-a-Service - Provides pre-built authentication flows with OAuth, passkeys, and session management for web apps.
Team Member Management - Organizes users into teams with role-based access control, invitations, and member management.
Team Member Invitations - Sends email invitations to join teams with role-based access control and a team switcher.
Webhook Delivery - Sends real-time backend notifications via POST requests with signed JSON payloads to configurable endpoints.
Webhook Event Receivers - Receives POST requests with JSON payloads at configured server URLs for user and team events.
Team Management - Creates teams, manages members, assigns role-based permissions, and stores team-specific profiles.
Team Creators - Creates new teams and optionally adds the creator with default permissions from the dashboard.
Team Deleters - Deletes teams, requiring the delete team permission on the client side.
Team-Scoped Access Control - Groups users into teams with granular permissions for membership management and resource access control.
Webhook Configuration - Ships interfaces for defining and managing webhook endpoints and routing parameters.
Signed Webhook Deliveries - Sends signed, tamper-proof webhooks with automatic retries and dashboard-based endpoint management.
Webhook Event Consumers - Processes incoming webhook payloads to drive system integrations.
API Key Authentication - Validates incoming API calls by checking the provided API key against stored user or team credentials.
API Key Management - Generates and manages scoped API keys for programmatic access to user and team resources.
Key Lifecycle Dashboards - Ships a dashboard for generating and rotating scoped API keys programmatically.
Pre-built Authentication Components - Ships ready-made sign-in, sign-up, and user management components that drop into any page.
Server-Side Session Stores - Creates and maintains authenticated sessions using server-side storage and cookie-based token exchange.
Open-Source Authentication Platforms - An open-source authentication and authorization platform with pre-built UI components and team management.
OAuth Token Exchanges - Provides an API to retrieve current OAuth access tokens for authorized external API calls.
OAuth Provider Integrations - Integrates with Google, GitHub, and Apple so users can sign in with existing accounts.
Passkey Authentication - Lets users sign in using device-based biometric or PIN authentication without a password.
Unified Passkey and OAuth Sign-in Flows - Handles sign-in flows including passkeys, OAuth providers, and CLI authentication with a single drop-in component.
Embedded Authentication Forms - Renders pre-built forms for user authentication, including credential and magic link sign-in options.
Team Action Permission Checks - Verifies a user has the required permission before performing an action on a team.
Role-Based Access Control - Defines and enforces granular access permissions for users and teams based on assigned roles.
Route Protection - Redirects unauthenticated visitors to the sign-in page using client hooks, server calls, or middleware.
Session Authentication - Creates, maintains, and terminates authenticated sessions across client and server components.
Full Lifecycle Managers - Creates, maintains, and terminates authenticated sessions across the application for each user.
Sign-Up Form Customizations - Builds a custom sign-up form by replacing the default component with a tailored implementation.
Webhook Integrations - Fires HTTP callbacks on user events so external systems react to sign-ups, logins, and other actions.
Authentication UI Components - Renders pre-built authentication forms and management interfaces as replaceable React components with customizable styling.
Sign-In Page Customizations - Builds a custom sign-in page by replacing the default component with a tailored implementation.
Email and Notifications - Sends transactional and marketing emails with customizable themes, templates, and user preference management.
Customizable Email Notification Platforms - Provides an email system with customizable templates, SMTP integration, and user-controlled preferences.
User Activity Dashboards with Session Replays - Provides live active-user counts, session replays, and dashboard building with plain-English or SQL queries.
Billing and Usage - Handles subscriptions, one-time charges, and usage metering with credits for users or teams.
Usage Metering & Billing - Handles subscriptions, one-time charges, and usage-based billing for individuals or teams.
Transactional Emailing - Sends automated emails for user verification, password resets, and other account-related events.
Unified Email Dispatch Services - Delivers both transactional and marketing emails from one API with AI template editing and tracking.
Prebuilt Management Interfaces - Provides ready-made UI components for users and teams to manage their own API keys.
CLI-Based Authentication - Opens a browser-based login flow from a terminal so users can authenticate with their existing accounts.
Callback Domain Validators - Restricts authentication callbacks to the project's registered domain to block token interception.
API Key Authentication - Generates and manages scoped API keys that authenticate programmatic access to user and team resources.
User Profile Management - Modifies a user's display name, email, or other profile fields through a direct update call.
Account Merging - Links a new OAuth sign-in to an existing account when the provider identity matches.
Custom Provider Configurations - Lets projects use their own OAuth app credentials so the consent screen shows their brand.
Scope Requests - Specifies the permissions an application needs from an external provider during sign-in.
Forgot Password Flows - Provides a customizable forgot password page with a tailored implementation.
User Session Termination - Ends the user's session and redirects them to a configured post-logout page.
Two-Factor Authentication - Requires users to provide a second verification factor during sign-in to strengthen account security.
Account Approval Workflows - Marks new accounts as restricted until an administrator reviews and approves them.
Password Resets - Provides a customizable password reset flow with a tailored implementation.
User Profile Retrieval - Returns the signed-in user's data in a client component, or null when no user is authenticated.
Server-Side Retrievals - Fetches the signed-in user's data once during server-side rendering, without reactive updates.
Sign-up Rule Evaluators - Evaluates sign-up attempts against customizable rules based on email domain or auth method.
Webhook Security - Validates cryptographic signatures on incoming webhook payloads to confirm origin and prevent replay attacks.
Dashboard Builders - Provides live active user counts, session replays, and natural-language querying for building dashboards.
Session Replays - Plays back recorded user sessions with filtering by user, team, duration, and click count.
Analytics - Provides live active-user counts, session replays, and natural-language querying for building dashboards.
Client-Side - Captures client-side events and records user sessions for debugging and usage analysis.
Analytics Tracking - Ships a built-in analytics dashboard that collects and displays usage metrics and user activity data.
Client-Side Analytics Instrumentation - Automatically records browser interactions and session data through an initialized SDK for later query and replay.
Usage Analytics - Collects and displays metrics on user activity, sign-ups, and feature adoption through a dashboard.
User Avatar Dropdowns - Displays the user's avatar and opens a dropdown menu for accessing account settings and preferences.
User Profiles - Shows the currently authenticated user's account information and settings within the application UI.

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