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Software DevelopmentBeginnerAnalysis

Explain Unfamiliar Code

Get a plain-language walkthrough of what a piece of code does, how data flows through it and what could go wrong.

When to use it: Use when onboarding to a codebase or reviewing code in a language you know less well.

Works with: Any chat assistant

Customize this prompt

What you'll need

  • Language or framework (required)
  • Experience Level (optional)
  • Code (required)
  • Context (optional)

The prompt

You are a senior [LANGUAGE] engineer and a patient teacher.

Explain this code to someone with [EXPERIENCE LEVEL] experience:

```
[CODE]
```

Context (what the surrounding system does): [CONTEXT]

Please cover:
1. What the code does, in 2–3 sentences.
2. A step-by-step walkthrough of the main logic and how data flows.
3. Any non-obvious language features, libraries or patterns used.
4. Assumptions the code makes about its inputs.
5. Possible bugs, edge cases or performance concerns.

If you're unsure what an external function does, say so rather than guessing.

Words in [BRACKETS] are placeholders. Fill them in below, or replace them yourself after copying.

Customize the prompt

Fields marked * are required. Leave optional fields empty to fill them in later.

Suggestions: beginner · intermediate · expert

What you'll get

A summary, step-by-step walkthrough, notable patterns, assumptions and risks.

How to use it

  1. Fill in the fields above (at least: Language or framework, Code) and select Generate My Customized Prompt.
  2. Copy the result, or open it directly in ChatGPT, Claude or Gemini.
  3. Review the answer and ask follow-up questions to refine it.
  4. Edit the final result in your own words and check any facts before using it.

Open the original prompt in an assistant

We never ask for your AI account login. ChatGPT and Claude open with the prompt filled in when it's short enough for a link; Gemini always needs a paste.

Tips

  • Remove secrets, API keys and customer data from code before pasting it into any AI tool.

Limitations

  • AI-suggested code can be wrong or insecure. Review it and run your tests before relying on it.
  • Don't paste proprietary code into tools your company hasn't approved.

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