Blog
All articles. All pillars. All authors.
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 Feature Request Module: Developer Feedback Loop
How we built the 0fee.dev feature request system with 4 tables, 20 API routes, upvoting, and priority levels. By Juste A. Gnimavo.
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 Numbers: 86 Sessions, 70,000+ Lines of Code
The complete statistical breakdown of 0fee.dev: 86 sessions, 70,000+ lines, 90+ endpoints, 8 SDKs, and more. By Juste A. Gnimavo.
App Lifecycle From the Terminal
How we built sh0 restart, stop, start, delete, and domains -- five CLI commands for managing application lifecycle with safety-first confirmation patterns.
Currency Conversion Across 25+ Currencies
How 0fee.dev handles currency conversion across 25+ currencies with free APIs, caching, and locale detection. By Juste A. Gnimavo and Claude.
Hosted Checkout Pages: The Redirect Flow
How 0fee.dev built server-rendered hosted checkout pages with Jinja2, multi-language support, dark mode, and sandbox mode.
Invoice System and PDF Generation With WeasyPrint
How 0fee.dev generates professional invoices with WeasyPrint, merchant branding, search/filter, and email delivery. By Juste A. Gnimavo and Claude.
The Checkout Widget: 21KB IIFE That Handles Everything
How we built 0fee.dev's 21KB checkout widget as a Vite IIFE library build with country selection, OTP support, and phone input.
The Intelligent Payment Routing Engine
How 0fee.dev routes payments across 117 methods and 53+ providers using priority-based selection with automatic fallback. By Juste A. Gnimavo and Claude.
Building a SolidJS Dashboard From Scratch
How we built 0fee.dev's SolidJS dashboard with stores, component architecture, real API integration, and 3-layout routing system.
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.