Gopal Katariya - AI & Python Developer Blog https://gopalkatariya.com/blogs Practical guides on AI engineering, Python backend systems, and shipping products to production. en-us Build a WhatsApp Bot with n8n › https://gopalkatariya.com/blog/n8n-whatsapp-bot-demo A beginner-friendly demo of building a WhatsApp bot using n8n + WhatsApp Cloud API: webhook, parsing, simple reply logic, and sending responses back to WhatsApp. Tue, 04 Aug 2026 00:00:00 GMT https://gopalkatariya.com/blog/n8n-whatsapp-bot-demo Gopal Katariya Tutorial FastAPI Basics (with Best Practices): Build a Clean, Production-Ready API https://gopalkatariya.com/blog/fastapi-basics-best-practices Learn FastAPI fundamentals with best practices: project structure, Pydantic models, dependency injection, validation, error handling, logging, settings, testing, and deployment tips. Tue, 04 Aug 2026 00:00:00 GMT https://gopalkatariya.com/blog/fastapi-basics-best-practices Gopal Katariya Tutorial Most Common n8n Tools (Nodes) and the Useful Ones to Learn First https://gopalkatariya.com/blog/most-common-n8n-tools-nodes A practical guide to the most commonly used n8n nodes—HTTP Request, Webhook, Set, IF, Merge, Code, Google Sheets, Slack, and more—plus when to use each. Tue, 04 Aug 2026 00:00:00 GMT https://gopalkatariya.com/blog/most-common-n8n-tools-nodes Gopal Katariya Tutorial