I wrote a guide on how to build agents like Claude Code, Codex, and Manus using LangChain & LangGraph.

Hey everyone, I’d like to share a tutorial I wrote on building an AI agent.
https://medium.com/@jiinkim_98821/building-ai-super-agents-from-scratch-claude-code-manus-beyond-part-1-7f4060aff30d

I put some basics together after going through various open-source agent implementations (OpenHands, OpenClaw, leaked Claude Code, etc) and Manus/LangChain talks on Youtube.

It covers topics like LLM/ReAct loop, human-in-the-loop, compaction, prompt caching, and tradeoffs between them.

Hope it helps!

https://i.redd.it/e247829c7mih1.gif