Blog
All articles. All pillars. All authors.
The Auditor Caught What the Builder Missed
How independent AI audit sessions found 5 Critical, 12 Important, and 19 Minor issues in 3,200 lines of Rust CLI code -- and why the builder never would have caught them.
Christmas Day Debugging: i18n, SDKs, and Currency Bugs
Sessions 064-067 on Christmas Day 2025: building i18n, rewriting SDKs, and fixing currency bugs from Abidjan. By Juste A. Gnimavo.
The December 12 Marathon: 13 Sessions in One Day
13 development sessions in a single day: the December 12 marathon that transformed 0fee.dev from prototype to platform. By Juste A. Gnimavo.
Watch Mode and WebSocket Streaming
How we built sh0 watch for auto-deploy on file changes and upgraded build log streaming from HTTP polling to WebSocket -- with graceful fallback.
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 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.
Fixing Infinite Loops and 500 Errors
The infinite loops and 500 errors that struck 0fee.dev across multiple sessions, and how we traced and fixed each one. By Juste A. Gnimavo.
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.
Docker Production Deployment for EasyPanel
How we containerized 0fee.dev with Docker for EasyPanel deployment across 3 services with nginx and security headers. By Juste A. Gnimavo.
16 Commands in One Day: The Complete CLI Story
How we built 16 CLI commands, 2 server endpoints, and a WebSocket streaming system -- audited through 6 independent sessions -- in a single day of AI-assisted development.
Why We Built a Payment Orchestrator From Scratch
Why we built 0fee.dev, a payment orchestrator covering 53+ providers across 200+ countries. By Juste A. Gnimavo and Claude, from Abidjan.
Building a Payment Platform From Abidjan, Ivory Coast
How we built 0fee.dev from Abidjan with one CEO and one AI CTO in 86 sessions over 80 days. Zero human engineers. By Juste A. Gnimavo.