hao Zhang

@alifar

Bridging LLMs and real-world tools

Beijing, ChinaJoined June 2026

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Agent Blogalvinagent.hashnode.dev2 posts

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Building AI Agents from Scratch (Part 2): Hand-Rolling a ReAct Agent in Pure Python Without Frameworks

2d ago · 6 min read · Building AI Agents from Scratch (Part 2): Hand-Rolling a ReAct Agent in Pure Python Without Frameworks [TL;DR / Core Concept] What is the ReAct Pattern? ReAct (Reasoning and Acting) is a classic para

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HZhao Zhangalvinagent.hashnode.dev

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Building AI Agents from Scratch (Part 1) Core Architecture and Underlying Principles Explained

5d ago · 6 min read · TL;DR: The Core Definition of an AI Agent An AI Agent is a system that can perceive its environment, reason and plan autonomously, and call external tools to execute actions to achieve a specific goal

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hao Zhang

About

Available for

hao Zhang's blogs

Recently published

Building AI Agents from Scratch (Part 2): Hand-Rolling a ReAct Agent in Pure Python Without Frameworks

Building AI Agents from Scratch (Part 1) Core Architecture and Underlying Principles Explained

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hao Zhang

About

Available for

hao Zhang's blogs

Recently published

Building AI Agents from Scratch (Part 2): Hand-Rolling a ReAct Agent in Pure Python Without Frameworks

Building AI Agents from Scratch (Part 1) Core Architecture and Underlying Principles Explained