All Articles
Building a Stripe Subscription SaaS with Claude Code: Webhooks, Auth, and Production Pitfalls
A complete implementation guide for building a Stripe subscription SaaS with Claude Code on Cloudflare Workers. Covers Webhook signature verification, two-layer KV + Cookie auth, and the production pitfalls that official docs won't warn you about.
Claude Code × Cursor × Windsurf: Hybrid AI Development Workflow — Maximizing Speed by Combining All Three Tools in 2026
A practical guide to building a hybrid AI development environment by understanding the strengths of Claude Code, Cursor, and Windsurf — and knowing when to use each. Covers cost optimization, team operations, and configuration sync.
Gemini 2.5 Pro vs Claude Sonnet 4.6: Real Coding Task Comparison for Japanese Developers
A hands-on comparison of Gemini 2.5 Pro and Claude Sonnet 4.6 across real coding tasks: bug fixing, feature implementation from Japanese specs, and code review. Find out which model fits your workflow.
Card Declined on Claude? Here's How to Fix It by Cause
Getting a payment declined error when renewing Claude Pro? This guide breaks down the most common causes — issuer blocks, 3-D Secure failures, debit and prepaid quirks, and billing limits — and walks you through fixing each one.
Building iOS 18 Widgets & App Intents with Claude Code: A Complete Implementation Guide
Accelerate WidgetKit and App Intents development with Claude Code. A hands-on guide covering interactive widgets, Live Activities, and Siri integration—with working code and real-world pitfalls.
Claude Code for Mobile App Development in 2026: A Practical SwiftUI & Kotlin Workflow
How to actually integrate Claude Code into iOS (SwiftUI) and Android (Kotlin) development. Real patterns from an indie developer maintaining multiple apps.
Three Months of Cutting Technical Debt in Half with Claude Code — A Practical Record
A three-month hands-on record of tackling accumulated technical debt using Claude Code. Covers visualization, prioritization, and automated refactoring — with real numbers showing what actually changed.
Building a Real-Time AI Processing Pipeline with Claude API and Apache Kafka
Learn how to integrate Claude API into Apache Kafka event streams with production-grade patterns. Implement smart buffering, model routing, and Dead Letter Queues to run large-scale real-time AI analysis at low cost.
From Spec to Production: Spec-Driven Development with Claude Code
Write a YAML spec and Claude Code auto-generates tests, implementation, and documentation. A practical guide to Spec-Driven Development covering spec formats, TDD automation, and CI/CD pipeline integration with real code examples.
Building a Custom Autonomous Agent Loop with Claude Code SDK — Beyond the CLI
Understand the internals of the Claude Code SDK and build custom autonomous agent loops in Python and TypeScript. Covers tool permissions, error recovery, and streaming, plus the cost instrumentation and monthly model audits I rely on in real operation.
Auto-Organizing Dropbox with Cowork — File Classification, Duplicate Removal, and Naming Conventions
When your Dropbox starts feeling chaotic, let Cowork handle it. Learn how to build an automated system for file classification, duplicate detection, and bulk renaming — and schedule it to run weekly.
Upgraded to Claude Pro but Limits Haven't Changed — How to Diagnose and Fix It
Claude Pro or Max upgrade not reflecting? Learn how to diagnose whether payment completed, refresh your session, clear browser cache, and contact Anthropic support to get your plan unlocked.