Ranjan Kumar
AI & ML Engineer · Author · Educator
I help AI builders design, build, and ship production-grade AI systems that actually work, cost-effectively, through hands-on writing, books, and practical engineering guidance.
Latest Posts
View all →MCP Went Stateless: Your 2026-07-28 Migration Guide
The 2026-07-28 spec removes the handshake and the session. Your servers keep running. The architecture you copied is now the deprecated path.
ai-engineeringLLM Chatbot Intent Classification: The Label Isn't Enough
In a regulated chatbot, the classifier's label is a request, not an order. What keeps the bot safe is the confidence, the validated slots, and a contract that refuses to act.
ai-engineeringLLM Chatbot Intent Classification: The Label Isn't Enough
In a regulated chatbot, the classifier's label is a request, not an order. What keeps the bot safe is the confidence, the validated slots, and a contract that refuses to act.
ai-engineeringHeadless Claude Code: When the Human Leaves the Loop, Hooks Are All You Have Left
Running Claude Code in CI strips away every safety net that needs a human - approval, rewind, reading the output. What's left is what you enforced in advance.
My Books
The ChatML Handbook
Structured Prompting & LLM Conversations
Learn how to structure prompts using ChatML for predictable, production-ready LLM behavior.
Building Real-World Agentic AI Systems
From Prototypes to Production
A practitioner's guide to designing, deploying, and operating reliable agentic AI systems in the real world.
Chat Templates
Ready-to-Use LLM Prompt Templates
A curated collection of battle-tested templates for common LLM tasks and workflows.
My Toolkit
A collection of tools I've built to boost productivity and simplify workflows.
Developer & AI Tools
Test Your Knowledge
Quiz yourself on AI engineering, observability, and production LLM systems
MedhaV - मेधावी
Start every day with clarity
Imagelly
AI-Based SaaS Image Edit/Enhancement Tool
Mermaid Diagram Generator
Create flowcharts, sequence diagrams, and more
MermAniSt — Mermaid Animation Studio
Turn Mermaid diagrams into animated presentations
LinkedIn Text Formatter
Format your LinkedIn posts with bold, italic, and more
MarkMelon: Markdown Editor
Edit, generate docs from Markdown and more
Slides Creator from Markdown
Generate beautiful presentations from Markdown
What I Write About
AI & ML Engineering
Production-ready AI systems, LLMs, and machine learning deployment strategies.
System Design
Scalable architectures, distributed systems, and infrastructure for AI applications.
Real-World Projects
Case studies, lessons learned, and practical insights from production deployments.