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 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 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.
Session 4: CLI Tool, Hosted Checkout, and API Documentation
How we built the zerofee-cli, hosted checkout pages, and 5 API documentation files in one session. Session 004 deep dive. By Juste A. Gnimavo and Claude.
Session 3: Marketing Website, 5 New SDKs, and Docker
How we built the 0fee.dev marketing website, 5 SDKs (Go, Ruby, PHP, Java, C#), and Docker stack in one session. By Juste A. Gnimavo and Claude.
PayPal Integration: Orders API and Redirect Flow
How 0fee.dev integrates PayPal Orders API v2 for global wallet payments with redirect flow, capture on return, and webhook handling.
Payment Links: Shareable URLs for Any Payment
How 0fee.dev payment links work: shareable URLs, customer data collection, currency conversion, and invoice generation. By Juste A. Gnimavo and Claude.
One Command to Deploy: How We Built sh0 push
How we built sh0 push -- a single command that detects your stack, packages files, uploads, builds, and returns a live URL in under 40 seconds.
Session 2: Dashboard, SDKs, Checkout Widget, and Celery in 60 Minutes
How we built the 0fee.dev dashboard, checkout widget, 2 SDKs, and Celery tasks in 60 minutes. Session 002 deep dive. By Juste A. Gnimavo and Claude.
Hub2: Covering Francophone Africa
How 0fee.dev integrates Hub2 for mobile money payments across 8 Francophone African countries with Orange, MTN, Wave, and Moov.
Webhook Delivery and Retry System
How 0fee.dev delivers webhooks with HMAC-SHA256 signatures, exponential backoff retries, and auto-disable after failures. By Juste A. Gnimavo and Claude.
Stripe Integration: Global Card Payments
How 0fee.dev integrates Stripe Checkout Sessions for global card payments, handling zero-decimal currencies and middleman callbacks.