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Serhii Kalyna

Full-stack developer with 18+ years of experience. Writing about AI tools, Claude API, MCP, and automation for developers at kalyna.pro

Location Kyiv, Ukraine Joined Joined on  Personal website https://kalyna.pro/

Education

Nikopol, Ukraine

Pronouns

he/him

Work

Team Lead | AI driven developer

Vector Databases Comparison: Pinecone vs Chroma vs Weaviate (2026)
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Vector Databases Comparison: Pinecone vs Chroma vs Weaviate (2026)

#ai #python #machinelearning #webdev
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3 min read

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Building a Telegram Bot with Claude API (Python, 2026)
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Building a Telegram Bot with Claude API (Python, 2026)

#python #tutorial #ai #webdev
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2 min read
RAG vs Fine-Tuning: When to Use Which (Developer's Guide)
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RAG vs Fine-Tuning: When to Use Which (Developer's Guide)

#ai #python #machinelearning #tutorial
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3 min read
n8n + Claude API: Complete Automation Guide (2026)
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n8n + Claude API: Complete Automation Guide (2026)

#ai #automation #webdev #tutorial
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2 min read
LangChain for Beginners: Complete Guide (2026)
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LangChain for Beginners: Complete Guide (2026)

#python #ai #tutorial #machinelearning
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2 min read
How to Use Claude API with Node.js (Complete Guide, 2026)
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How to Use Claude API with Node.js (Complete Guide, 2026)

#javascript #node #ai #tutorial
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3 min read
How to Configure Cloudflare for WordPress: Caching & Security Headers
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How to Configure Cloudflare for WordPress: Caching & Security Headers

#webdev #wordpress #cloudflare #devops
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3 min read
How to Build an AI Agent with Python: Step-by-Step Tutorial (2026)
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How to Build an AI Agent with Python: Step-by-Step Tutorial (2026)

#python #ai #tutorial #webdev
Comments
5 min read
Prompt Engineering Guide for Developers: Best Practices & Techniques (2026)
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Prompt Engineering Guide for Developers: Best Practices & Techniques (2026)

#ai #claude #programming #tutorial
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5 min read
RAG Tutorial with Python: Build a Retrieval-Augmented Generation System
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RAG Tutorial with Python: Build a Retrieval-Augmented Generation System

#python #ai #rag #tutorial
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4 min read
How to Build an MCP Server with Claude: Complete Tutorial (2026)
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How to Build an MCP Server with Claude: Complete Tutorial (2026)

#mcp #claude #python #ai
1
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7 min read
Claude API Pricing Explained: What Does It Really Cost in 2025?
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Claude API Pricing Explained: What Does It Really Cost in 2025?

#ai #claude #programming #webdev
1
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3 min read
How to Use Claude API with Python: Complete Beginner's Guide (2026)
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How to Use Claude API with Python: Complete Beginner's Guide (2026)

#python #ai #claude #tutorial
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3 min read
What is Model Context Protocol (MCP)? A Developer’s Guide
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What is Model Context Protocol (MCP)? A Developer’s Guide

#ai #llm #mcp #tutorial
1
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3 min read
How to Update Immich in Docker: Step-by-Step Guide (2026)
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How to Update Immich in Docker: Step-by-Step Guide (2026)

#immich #docker #tutorial
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2 min read
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