Engineering notes — things I keep re-explaining, written down once.
- A US/EU Failure-Test Matrix for One-Key Node.js SaaS Chatbot APIs
- Node.js Cron Alerts for Metrics API Failure Thresholds
- Why LLM moderation false positives happen, and how to route allow, review, or block
- One API key for OpenAI, Claude, and Gemini: picking a unified LLM backend
- GDPR-compliant speech-to-text API options for an EU startup: what I picked and why
- Multi-label classification in Node.js: exact JSON labels for ecommerce product tagging
- Batch audio transcription for long recordings — async jobs and webhook callbacks
- Cheapest speech-to-text API for a startup: what per-minute pricing really costs