Engineering notes
Articles for people who
ship the stack
Rewrites on React, Node.js, TypeScript and AI. A translated body is shown when it exists. If it does not, you see the English text and a note that says so.
Tagged: tutorial
Build a Mini AI Assistant From Scratch With Agents, Tools and Skills
A small Python project that routes a prompt to agents, calls a calculator and unit-converter tool, runs a summariser skill and sends the rebuilt prompt to an LLM.
12 min readBuilding Your First LangChain Agent with LangGraph in 2026
Build a LangChain agent step by step with LangGraph, tools, memory and tracing, avoid four common mistakes, and see how a bootcamp support desk used one.
10 min readMCP From Scratch Part 3: Connect a Client to Your Server
MCP from scratch, part 3: a stdio client that launches hr_server.py itself, calls the search_employee tool through asyncio and returns the results to you.
3 min read
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Yes. Each piece is an original English rewrite prepared for this site. Structure and code examples follow the source material; prose is rewritten and checked for overlap before export.
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New drafts land in the publish queue as they pass editorial checks. Running the site import picks up only new or changed slugs — nothing is duplicated.
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