Blog
All articles. All pillars. All authors.
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.
Architecture Decisions: Python, FastAPI, SolidJS, SQLite
The architecture behind 0fee.dev: why we chose Python FastAPI, SolidJS, SQLite, DragonflyDB, and Celery. By Juste A. Gnimavo and Claude.
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.
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.
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.
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 A. 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.
Documentation as Product
How we documented 30 CLI commands across a marketing page, dashboard page, and 4 doc pages in 5 languages -- treating documentation as a product feature, not an afterthought.
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 A. Gnimavo and Claude.
SQLite to PostgreSQL: 39 ORM Models and 1,204 Rows
How we migrated 0fee.dev from SQLite to PostgreSQL with 39 ORM models and 1,204 rows of data. By Juste A. Gnimavo and Claude.
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.
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.