Best Claude Code Prompt for “Write a README”

Claude Code is an agentic CLI that autonomously reads files, runs commands, and writes code. The single most important technique is verification-first prompting: start with what 'done' looks like (run tests, verify build) and describe outcomes, not implementation steps. This free template is optimized specifically for Claude Code, achieving approximately 37% token reduction compared to unoptimized prompts while producing higher quality output.

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What Most People Type

Write a README for my open source project

Optimized Claude Code Prompt

```xml
<verification>
Verify that the generated README accurately reflects the project's purpose, installation instructions, usage examples, and contribution guidelines. Ensure all code snippets within the README are syntactically correct and would execute as described.
</verification>
<outcome>
A comprehensive README.md file is created in the root of the project repository. This README clearly explains what the open-source project does, how to install it, provides practical usage examples, details the contribution process, and lists the project's license.
</outcome>
<context>
Review the existing `package.json` for project name, version, and dependencies. Examine `src/` directory structure to understand the project's components. Look at `CONTRIBUTING.md` if it exists for existing contribution guidelines.
</context>
<constraints>
Do not alter any existing source code files. Maintain a professional and informative tone. Adhere to common open-source README conventions. Ensure the license information is correctly stated based on the project's license.
</constraints>
<git>
Commit the changes to the main branch with a clear commit message like "feat: Add comprehensive README.md".
</git>
```

Why This Claude Code Prompt for “Write a README” Works Better

When you type “Write a README for my open source project” into Claude Code, it lacks structure — Claude Code has to guess what format you want, how detailed to go, and what to prioritize. The optimized version removes that guesswork.

It starts with verification criteria (what 'done' looks like), describes the desired outcome rather than implementation steps, and scopes the task to specific files — matching Claude Code's agentic workflow.

This Prompt Optimized for Other AI Models

Each AI model processes instructions differently. See how this same prompt is optimized for:

ChatGPT version →Claude version →Gemini version →Cursor version →

Frequently Asked Questions

What makes a good Claude Code prompt for write a readme?

Can I use this prompt template for free?

Yes — copy the optimized prompt below and paste it directly into Claude Code. For unlimited prompt optimization across all 5 AI models, try PromptOptimizr free with 10 prompts per month. You can also use the Chrome extension to optimize prompts directly inside your AI chat.

Why is this prompt different from a generic one?

Each AI model processes instructions differently. Claude Code has specific formatting preferences — this prompt is structured to work with those preferences, not against them. The result is better output quality with approximately 37% fewer tokens.

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