Production-Ready Dart Packages for Every Backend Need

14 battle-tested packages for authentication, file management, security middleware, and more. Build robust Dart backends in record time.

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Complete Auth Stack

Email/password registration, OAuth2 with PKCE (Google, GitHub), JWT tokens, refresh token rotation, and TOTP two-factor authentication.

File Management

Upload and manage files with pluggable storage backends. Support for local disk, AWS S3, Cloudflare R2, and DigitalOcean Spaces.

Security Out of the Box

CSRF protection, CORS handling, rate limiting, security headers (CSP, HSTS), and session management. All as composable middleware.

Developer Experience

Type-safe environment loading, structured error handling, comprehensive logging, and user-agent parsing. No boilerplate.

All Packages

Each package works standalone or together as a complete ecosystem.

env
Type-safe environment variable loading from .env files
Core
errors
Structured exceptions with HTTP status codes and validation
Core
kd_bcrypt
Pure Dart bcrypt hashing with timing-safe verification
Core
kd_totp
RFC 6238 TOTP and RFC 4226 HOTP two-factor authentication
Core
user_agent
Browser, OS, device detection and bot identification
Core
auth
Email/password + OAuth2 authentication with JWT tokens
Feature
media
File uploads with S3, R2, and local storage backends
Feature
users
User profile management with auth integration
Feature
spark_logging
Structured logging with pluggable handlers
Middleware
spark_cors
CORS middleware with dynamic origin matching
Middleware
spark_csrf
CSRF token generation and validation
Middleware
spark_rate_limiter
Rate limiting by IP with path-specific rules
Middleware
spark_session
Cookie-based sessions with multiple store backends
Middleware
spark_security_headers
CSP, HSTS, and security headers middleware
Middleware

Simple Pricing

One plan, full access to every package.

200€
per year, VAT excluded
✓Access to all 14 packages
✓1 developer seat per license
✓2 hours of support included
✓Regular updates
Get Started

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