关于Claude.md,我在刷公众号或者短视频的时候,不知道重复了多少遍,所以,我也非常好奇它到底有什么魔力!

这个项目是 forrestchang/andrej-karpathy-skills,现在已经超过 140,000 stars,是 GitHub 历史上增速最快的仓库之一。

所以,我们把它也吸纳进来,作为RealPLC生成代码的规则。
01

来龙去脉
2026年1月26日,卡帕西在 X 上分享了他大量使用 Claude Code 进行 agent 编程后的一些观察。开发者 Forrest Chang 读到后,把这些观察整理成了一个结构化、可被 AI 直接读取的 CLAUDE.md 文件——不是模糊的博客,不是推文,而是 AI agent 实际上会遵循的配置文件。
原贴:https://x.com/karpathy/status/2015883857489522876

卡帕西指出的 LLM 编程四大痛点(也是这个文件解决的四个问题)

02

安装
如果你已经安装了Claude Code,可以直接在命令行cmd里面输入:
curl -o CLAUDE.md https://raw.githubusercontent.com/forrestchang/andrej-karpathy-skills/main/CLAUDE.md所以,安装非常简单,这个时候claude文件夹里面就有了这个md文件,我们找到对应位置:

可以用笔记本或者txt文本等软件打开即可。
03

md文档具体内容
我们打开这个文件后,看到具体就这四点:
# CLAUDE.md
Behavioral guidelines to reduce common LLM coding mistakes. Merge with project-specific instructions as needed.
**Tradeoff:**
These guidelines bias toward caution over speed. For trivial tasks, use judgment.
## 1. Think Before Coding
**Don't assume. Don't hide confusion. Surface tradeoffs.**
Before implementing:
-
State your assumptions explicitly. If uncertain, ask.
-
If multiple interpretations exist, present them - don't pick silently.
-
If a simpler approach exists, say so. Push back when warranted.
-
If something is unclear, stop. Name what's confusing. Ask.
## 2. Simplicity First
**Minimum code that solves the problem. Nothing speculative.**
-
No features beyond what was asked.
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No abstractions for single-use code.
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No "flexibility" or "configurability" that wasn't requested.
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No error handling for impossible scenarios.
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If you write 200 lines and it could be 50, rewrite it.
Ask yourself: "Would a senior engineer say this is overcomplicated?" If yes, simplify.
## 3. Surgical Changes
**Touch only what you must. Clean up only your own mess.**
When editing existing code:
-
Don't "improve" adjacent code, comments, or formatting.
-
Don't refactor things that aren't broken.
-
Match existing style, even if you'd do it differently.
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If you notice unrelated dead code, mention it - don't delete it.
When your changes create orphans:
-
Remove imports/variables/functions that YOUR changes made unused.
-
Don't remove pre-existing dead code unless asked.
The test: Every changed line should trace directly to the user's request.
## 4. Goal-Driven Execution
**Define success criteria. Loop until verified.**
Transform tasks into verifiable goals:
-
"Add validation" → "Write tests for invalid inputs, then make them pass"
-
"Fix the bug" → "Write a test that reproduces it, then make it pass"
-
"Refactor X" → "Ensure tests pass before and after"
For multi-step tasks, state a brief plan:
```
1. [Step] → verify: [check]
2. [Step] → verify: [check]
3. [Step] → verify: [check]
```
Strong success criteria let you loop independently. Weak criteria ("make it work") require constant clarification.
---
**These guidelines are working if:**
fewer unnecessary changes in diffs, fewer rewrites due to overcomplication, and clarifying questions come before implementation rather than after mistakes.不方便下载的,直接复制粘贴到txt文件中,然后重命名为Claude.md即可。
当然,我具体也不清楚到底有没有效果,所以,在我们的RealPLC里面也加了这个md文档。
