Blog
All articles. All pillars. All authors.
The CLI Tool: zerofee-cli
How we built zerofee-cli with Python, Typer, Rich, and httpx -- login, payments, webhook forwarding, log streaming. By Juste Thales Gnimavo and Claude.
A Stripe-Inspired Marketing Website in SolidJS
How we built 0fee.dev's Stripe-inspired marketing website with interactive code examples, pricing calculator, and country map.
The Middleman Callback Pattern: Verifying Every Payment
How 0fee.dev's middleman callback pattern verifies every payment by intercepting provider redirects before reaching the developer.
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.
The Checkout Widget Redirect Problem: Popups, Polling, and postMessage
How we solved the redirect problem in 0fee.dev's checkout widget using popups, polling, and postMessage. By Juste Thales Gnimavo and Claude.
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 Thales Gnimavo.
Why We Built a Payment Orchestrator From Scratch
Why we built 0fee.dev, a payment orchestrator covering 53+ providers across 200+ countries. By Juste Thales Gnimavo and Claude, from Abidjan.
The Developer Console: Tabs, Status Checker, and Widget Preview
How we built the 0fee.dev Developer Console with interactive status checker, widget preview, and downloadable templates. By Juste Thales Gnimavo and Claude.
The Simplified 3-Field API: Amount, Currency, Reference
How 0fee.dev reduced its payment API to 3 required fields: amount, currency, and reference. Hosted checkout as the default. By Juste Thales Gnimavo and Claude.
Architecture Decisions: Python, FastAPI, SolidJS, SQLite
The architecture behind 0fee.dev: why we chose Python FastAPI, SolidJS, SQLite, DragonflyDB, and Celery. By Juste Thales Gnimavo and Claude.
The Middleware Stack: Auth, Rate Limiting, and Idempotency
How 0fee.dev handles API key auth, Redis-based rate limiting, and idempotency keys to prevent duplicate payments. By Juste Thales Gnimavo and Claude.
BUI and PaiementPro: Local Champions for West Africa
How 0fee.dev integrates BUI and PaiementPro for West African mobile money with OTP validation, Wave redirect, and SDK integration.