transmit_dart_auth_sdk 0.0.2

A Dart SDK for Transmit Authentication, enabling secure server-side authentication and user management for Dart-based backend applications.

Transmit Dart Auth SDK

Overview

The Transmit Dart Auth SDK provides seamless authentication and token management for Transmit’s API services in both server-side Dart applications and Flutter clients. With this SDK, you can:

• Authenticate via API key, OAuth 2.0 (authorization code & client credentials), and JWT bearer flows
• Cache, refresh, and revoke access tokens automatically
• Store tokens securely with a pluggable storage interface
• Attach auth headers to http requests with minimal boilerplate
• Perform admin operations (service account creation, key rotation) via Transmit’s Management API

Whether you’re building a backend service in Dart or a cross-platform Flutter app, this SDK handles the heavy lifting of Transmit authentication.

Features

• Multiple Auth Flows

  • API Key header injection
  • OAuth 2.0: Authorization Code (PKCE) & Client Credentials
  • JWT Bearer for server-to-server interactions

• Token Lifecycle Management

  • Automatic caching & expiry checks
  • Silent refresh before token expiration
  • Manual revoke and logout helpers

• Secure Token Storage

  • Built-in FileTokenStorage and MemoryTokenStorage
  • Pluggable TokenStorage interface for custom backends (e.g., keychain, database)

• Request Interceptor

  • AuthHttpClient wraps http.Client and adds Authorization headers automatically

• Admin API Helpers

  • Create, list, and rotate service account API keys
  • Fetch user and service account details

• Platform Support

  • Dart VM (server)
  • Flutter Mobile (iOS/Android)
  • Flutter Web

Getting Started

1. Prerequisites

• Dart SDK ≥ 2.14.0 or Flutter SDK ≥ 3.0
• A Transmit API project with client credentials (Client ID & Client Secret) or an API key

2. Configure Your Transmit App

• In the Transmit Developer Portal, register your application
• Note your Client ID, Client Secret, and OAuth Redirect URI
• Generate an API Key if you plan to use the API Key flow

Installation

Add the SDK to your project:

# Dart:
dart pub add transmit_dart_auth_sdk

# Flutter:
flutter pub add transmit_dart_auth_sdk