| name | update-readme |
| description | Create or update a professional root-level README.md for a repository. Use when creating a README, updating a README, generating a README, improving a README, making a professional README, crafting an open-source README, or adding badges, diagrams, and quick-start sections to a project's main README file. |
README Generation & Maintenance
Guide for creating and maintaining professional, comprehensive root-level README.md files for open-source and internal projects.
When to Use
- Creating a new
README.md for a repository
- Updating or improving an existing root-level README
- Making a project's README more professional or complete
When NOT to Use
- For
docs/ folder structure and internal documentation → use update-docs
- For feature-specific documentation → use
update-docs
- For architecture decision records → use
update-docs
Workflow
- Analyze the repository — scan language, framework, project structure, purpose, existing docs
- Identify gaps — compare current README (if any) against the standard sections below
- Generate/update — produce a complete, professional README following the template
README Sections Template
A professional open-source README should include these sections in order:
1. Title + Badges
# Project Name
[](link)
[](link)
[](link)
[](link)
Use shields.io for consistent badge styling. Common badges: build/CI status, version/release, license, test coverage, downloads.
2. Description
One-liner describing what the project does, followed by a brief paragraph expanding on the value proposition.
> A brief, compelling one-line description of what this project does.
Project Name does X by Y, enabling Z. It is designed for [target audience] who need [capability].
3. Key Features
Bullet list of the most important features. Keep to 5-8 items.
## Features
- **Feature A** — short description
- **Feature B** — short description
- **Feature C** — short description
4. Architecture Overview
Always include at least one mermaid diagram showing the system architecture.
## Architecture
<!-- Use graph-generation skill for complex visualizations -->
```mermaid
graph TD
A[Client] --> B[API Gateway]
B --> C[Service A]
B --> D[Service B]
C --> E[(Database)]
`` `
Common README diagrams:
- System architecture — C4 context or container diagram
- Data flow — how data moves through the system
- Deployment overview — infrastructure and deployment topology
Use the graph-generation skill for complex or multi-diagram visualizations.
5. Quick Start / Getting Started
Keep to 5 steps or fewer. Show the fastest path from zero to running.
## Quick Start
### Prerequisites
- Node.js >= 18
- Docker (optional)
### Installation
`` `bash
git clone https://github.com/org/project.git
cd project
npm install
`` `
### Run
`` `bash
npm start
`` `
6. Usage / Examples
Show practical code snippets demonstrating common use cases.
## Usage
`` `javascript
import { Project } from 'project-name';
const result = Project.doSomething({ option: 'value' });
console.log(result);
`` `
7. Configuration
Document environment variables, config files, and key settings.
## Configuration
| Variable | Description | Default |
|----------|-------------|---------|
| `PORT` | Server port | `3000` |
| `DATABASE_URL` | Database connection string | — |
| `LOG_LEVEL` | Logging verbosity | `info` |
8. API Reference
Brief overview with link to full docs if extensive.
## API Reference
See the [full API documentation](docs/api.md) for details.
### Key Endpoints
| Method | Path | Description |
|--------|------|-------------|
| GET | `/api/v1/items` | List all items |
| POST | `/api/v1/items` | Create an item |
9. Project Structure
Tree view of key directories to orient new contributors.
## Project Structure
`` `
├── src/
│ ├── api/ # REST API routes
│ ├── services/ # Business logic
│ ├── models/ # Data models
│ └── utils/ # Shared utilities
├── tests/ # Test suites
├── docs/ # Documentation
└── scripts/ # Build and deploy scripts
`` `
10. Contributing
## Contributing
Contributions are welcome! Please see [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
1. Fork the repository
2. Create your feature branch (`git checkout -b feature/amazing-feature`)
3. Commit your changes (`git commit -m 'Add amazing feature'`)
4. Push to the branch (`git push origin feature/amazing-feature`)
5. Open a Pull Request
11. License
## License
This project is licensed under the MIT License — see the [LICENSE](LICENSE) file for details.
Best Practices
- Lead with what the project does, not how — readers need to know if this project is relevant before they care about implementation
- Keep Quick Start to <5 steps — if it takes more, simplify or provide a one-line install
- Use badges for at-a-glance project health — build status, coverage, and version tell contributors the project is maintained
- Include screenshots/GIFs for UI projects — visual projects need visual documentation
- Keep it scannable — use headers, bullets, and tables; avoid walls of text
- Link to detailed docs/ rather than duplicating — the README is an entry point, not the full documentation
- Always include at least one architecture diagram — mermaid diagrams render natively on GitHub
- Update the README when the project changes — stale READMEs erode trust
- Test all code examples — broken examples are worse than no examples
- Consider your audience — write for someone seeing the project for the first time
