Blog
All articles. All pillars. All authors.
Wallet and Add Funds Flow
How 0fee.dev's wallet system works: credits, add-funds flow, country-based filtering, coupons, and balance management. By Juste A. Gnimavo and Claude.
The Test Provider and Sandbox System
How 0fee.dev built a test provider with magic amounts, test cards, and a sandbox system for developers to test payments safely.
Seven SDKs in Seven Languages
How we built 7 SDKs for 0fee.dev in TypeScript, Python, Go, Ruby, PHP, Java, and C# across two sessions. By Juste A. Gnimavo and Claude.
The CLI Tool: zerofee-cli
How we built zerofee-cli with Python, Typer, Rich, and httpx -- login, payments, webhook forwarding, log streaming. By Juste A. Gnimavo and Claude.
The API Playground: Interactive API Testing
How we built the 0fee.dev API Playground with 17 endpoints, JSON highlighting, cURL export, and request history. By Juste A. Gnimavo and Claude.
API Documentation: 90+ Endpoints Fully Documented
How we documented 90+ API endpoints across 18 route modules with scroll-spy navigation and multi-language code examples. By Juste A. Gnimavo and Claude.
The GetStarted Onboarding Stepper
How we built a 6-step onboarding stepper for 0fee.dev with auto-verification polling, progress tracking, and sandbox reset. By Juste A. Gnimavo and Claude.
WHMCS, WordPress, and WooCommerce Plugins
How we built 3 platform plugins for 0fee.dev -- WHMCS, WordPress, and WooCommerce -- plus downloadable code samples in 5 languages. By Juste A. Gnimavo.
SDK v3: PHP, Go, Rust, Java, Flutter, and React Native
How we expanded the 0fee.dev SDK portfolio from 2 to 8 languages, jumping from 21% to 79% API coverage in two sessions. By Juste A. Gnimavo and Claude.
The AI Developer Assistant: Claude Haiku Integration
How we designed an AI developer assistant for 0fee.dev using Claude Haiku, custom tools, and streaming responses. By Juste A. Gnimavo and Claude.
The Admin Panel MVP: UUID-Based Routes and Role Hierarchy
How we built the 0fee.dev admin panel with UUID-based routes, JWT auth, and a 4-tier role hierarchy. By Juste A. Gnimavo and Claude.
SQLAdmin Migration: From SolidJS Admin to Integrated Backend
How we migrated the 0fee.dev admin panel from a custom SolidJS frontend to SQLAdmin with 16 models and 12 views. By Juste A. Gnimavo.