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Guides, tutorials, and insights on AI coding tools and API providers.

· 5 min read

The First Real Question: Is This Thing Just Another Black Box?

"Let me tell you something—I did something absolutely insane recently. I spent just three yuan, the price of a cheap cup of milk tea, and trained an AI model fr

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· 4 min read

Meituan LLM Algorithm Interview: 3 Tough Function Call Questions

I’d barely sat down, my back not even touching the chair. The interviewer glanced at my resume, and when his eyes landed on the “tool calling” project experienc

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· 2 min read

First, those 140 billion tokens: the number is real, but you have to know how to read it

Guess what? It’s not what you think! Speaking of which, I still remember exactly how I felt scrolling through my feed that day. It was an ordinary weekday eveni

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· 7 min read

Agent Engineer Interview Questions on Tool Use

A friend texted me late last night. He said he was training a group of interviewers from several big tech companies for Agent positions. He flipped through the

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· 6 min read

How AutoGPT Works: A Deep Dive Into Its Architecture

You’ve probably seen that scene before—last spring, AutoGPT suddenly took over my feed, GitHub stars jumped by ten thousand in a day, and everyone in my朋友圈 was

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· 6 min read

/btw: Sneak Questions Into Your Code

You won't believe it! The other day at the office, I saw a coworker who had been using Claude Code for three hours straight, completely rewriting a project. I w

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· 4 min read

Recently, it seems like everyone around me is using Cursor to write code

Recently, it seems like everyone around me is using Cursor to write code. Last year, I did something—I gathered the entire team in the conference room, slammed

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· 6 min read

How LLM Function Calling Works: Principles and Implementation

Do you have any idea how broken I was back in June 2023? A user casually throws out, "What's the weather like in Beijing today?" and I’ve got to write a regex

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· 5 min read

The Day OpenAI Cut Us Off, I Actually Felt Relieved

Alright, sure. I read through this article twice, and the facts hold up—the data points and timeline line up. Now I'm going to take a pass at editing it, focusi

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· 5 min read

The Core of LLM Agents Is Still Prompts?

Let me tell you a story. A while back, a friend came to me and asked: "Bro, I want to build an Agent project. How do I write the prompt to make it awesome?" I l

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· 5 min read

One – First, let's talk about how interviews have changed

Hey! Last month, I went for an interview at a big tech company. The interviewer leaned back in his chair and just threw this at me: "Design a customer service A

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· 5 min read

How to Write claude.md for Maximum Claude Code Efficiency

Last month I nearly threw my keyboard across the room because of one project. Here's what happened: Claude Code jumps in, immediately runs yarn install, and han

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