flask
Provides comprehensive guidance for Flask framework including routing, templates, forms, database integration, extensions, and deployment. Use when the user asks about Flask, needs to create web applications, implement routes, or build Python web services.
Best use case
flask is best used when you need a repeatable AI agent workflow instead of a one-off prompt. It is especially useful for teams working in multi. Provides comprehensive guidance for Flask framework including routing, templates, forms, database integration, extensions, and deployment. Use when the user asks about Flask, needs to create web applications, implement routes, or build Python web services.
Provides comprehensive guidance for Flask framework including routing, templates, forms, database integration, extensions, and deployment. Use when the user asks about Flask, needs to create web applications, implement routes, or build Python web services.
Users should expect a more consistent workflow output, faster repeated execution, and less time spent rewriting prompts from scratch.
Practical example
Example input
Use the "flask" skill to help with this workflow task. Context: Provides comprehensive guidance for Flask framework including routing, templates, forms, database integration, extensions, and deployment. Use when the user asks about Flask, needs to create web applications, implement routes, or build Python web services.
Example output
A structured workflow result with clearer steps, more consistent formatting, and an output that is easier to reuse in the next run.
When to use this skill
- Use this skill when you want a reusable workflow rather than writing the same prompt again and again.
When not to use this skill
- Do not use this when you only need a one-off answer and do not need a reusable workflow.
- Do not use it if you cannot install or maintain the related files, repository context, or supporting tools.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/flask/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How flask Compares
| Feature / Agent | flask | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Provides comprehensive guidance for Flask framework including routing, templates, forms, database integration, extensions, and deployment. Use when the user asks about Flask, needs to create web applications, implement routes, or build Python web services.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
## When to use this skill
Use this skill whenever the user wants to:
- Build Python web applications with Flask routing and templates
- Configure WSGI, blueprints, extensions, and deployment
- Integrate Flask-SQLAlchemy, Flask-Login, or other extensions
- Create REST APIs or serve server-rendered pages with Jinja2
## How to use this skill
### Workflow
1. **Create app** — instantiate Flask and define routes
2. **Add templates** — use Jinja2 for HTML rendering
3. **Organize with blueprints** — split features into blueprint modules
4. **Configure and deploy** — set environment config, deploy with Gunicorn
### Quick Start Example
```python
# app.py
from flask import Flask, render_template, request, jsonify
app = Flask(__name__)
app.config['SECRET_KEY'] = 'change-me-in-production'
@app.route('/')
def index():
return render_template('index.html', title='Home')
@app.route('/api/items', methods=['GET', 'POST'])
def items():
if request.method == 'POST':
data = request.get_json()
# Process and save item
return jsonify({'status': 'created', 'item': data}), 201
return jsonify({'items': []})
if __name__ == '__main__':
app.run(debug=True)
```
### Application Factory Pattern
```python
# __init__.py
from flask import Flask
def create_app(config_name='default'):
app = Flask(__name__)
app.config.from_object(config[config_name])
# Initialize extensions
db.init_app(app)
login_manager.init_app(app)
# Register blueprints
from .auth import auth_bp
app.register_blueprint(auth_bp, url_prefix='/auth')
from .main import main_bp
app.register_blueprint(main_bp)
return app
```
```bash
# Development
flask --app app run --debug
# Production
gunicorn -w 4 -b 0.0.0.0:8000 "app:create_app()"
```
### Blueprint Example
```python
# auth/routes.py
from flask import Blueprint, render_template, redirect, url_for
auth_bp = Blueprint('auth', __name__, template_folder='templates')
@auth_bp.route('/login', methods=['GET', 'POST'])
def login():
if request.method == 'POST':
# Authenticate user
return redirect(url_for('main.index'))
return render_template('auth/login.html')
```
## Best Practices
- Use the application factory pattern with blueprints for modularity
- Keep sensitive configuration out of source code — use environment variables
- Deploy with Gunicorn or uWSGI behind a reverse proxy (nginx)
- Enable CSRF protection with Flask-WTF; set security headers
- Use `flask shell` for interactive debugging with app context
## Reference
- Official documentation: https://flask.palletsprojects.com/
## Keywords
flask, Python web, routing, templates, Jinja2, blueprints, WSGI, REST API, GunicornRelated Skills
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