fastapi
Provides comprehensive guidance for FastAPI framework including routing, request validation, dependency injection, async operations, OpenAPI documentation, and database integration. Use when the user asks about FastAPI, needs to create REST APIs, or build high-performance Python web services.
Best use case
fastapi 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 FastAPI framework including routing, request validation, dependency injection, async operations, OpenAPI documentation, and database integration. Use when the user asks about FastAPI, needs to create REST APIs, or build high-performance Python web services.
Provides comprehensive guidance for FastAPI framework including routing, request validation, dependency injection, async operations, OpenAPI documentation, and database integration. Use when the user asks about FastAPI, needs to create REST APIs, or build high-performance 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 "fastapi" skill to help with this workflow task. Context: Provides comprehensive guidance for FastAPI framework including routing, request validation, dependency injection, async operations, OpenAPI documentation, and database integration. Use when the user asks about FastAPI, needs to create REST APIs, or build high-performance 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/fastapi/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How fastapi Compares
| Feature / Agent | fastapi | 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 FastAPI framework including routing, request validation, dependency injection, async operations, OpenAPI documentation, and database integration. Use when the user asks about FastAPI, needs to create REST APIs, or build high-performance 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 REST or async APIs with FastAPI and Pydantic models
- Implement dependency injection, authentication, or middleware
- Configure routing, OpenAPI documentation, and deployment
- Integrate with databases using async patterns
## How to use this skill
### Workflow
1. **Create app** — instantiate `FastAPI()` and define route handlers
2. **Define models** — use Pydantic for request/response validation
3. **Add dependencies** — implement DI for auth, DB sessions, etc.
4. **Test and deploy** — run with uvicorn, verify via `/docs`
### Quick Start Example
```python
from fastapi import FastAPI, HTTPException, Depends
from pydantic import BaseModel
from datetime import datetime
app = FastAPI(title="My API", version="1.0.0")
# Request/Response models
class ItemCreate(BaseModel):
name: str
price: float
description: str | None = None
class ItemResponse(ItemCreate):
id: int
created_at: datetime
# Dependency example
async def get_db():
db = SessionLocal()
try:
yield db
finally:
db.close()
# Route handlers
@app.post("/items/", response_model=ItemResponse, status_code=201)
async def create_item(item: ItemCreate, db=Depends(get_db)):
db_item = Item(**item.model_dump())
db.add(db_item)
db.commit()
return db_item
@app.get("/items/{item_id}", response_model=ItemResponse)
async def get_item(item_id: int, db=Depends(get_db)):
item = db.query(Item).get(item_id)
if not item:
raise HTTPException(status_code=404, detail="Item not found")
return item
```
```bash
# Run the server
uvicorn main:app --reload
# Interactive docs available at http://localhost:8000/docs
```
### Authentication Example
```python
from fastapi.security import OAuth2PasswordBearer
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
@app.get("/users/me")
async def read_current_user(token: str = Depends(oauth2_scheme)):
user = verify_token(token)
if not user:
raise HTTPException(status_code=401, detail="Invalid token")
return user
```
## Best Practices
- Define explicit request and response schemas with Pydantic; use consistent status codes
- Use async functions and database connection pools for high concurrency
- Configure CORS middleware and security headers for production
- Leverage automatic OpenAPI docs (`/docs`, `/redoc`) for API exploration
- Use `BackgroundTasks` for non-blocking operations like email sending
## Reference
- Official documentation: https://fastapi.tiangolo.com/
## Keywords
fastapi, async API, Pydantic, OpenAPI, dependency injection, Python web, REST API, uvicornRelated Skills
vant-vue3
Provides structured guidance for Vant of Vue 3.0. Use when the user needs Vant with Vue 3, asks about mobile UI components such as Button, Cell, Form, Dialog, Toast, Popup, ConfigProvider, theme customization, project setup, or wants to implement mobile-first interfaces with vant or van- components.
layui-vue3
Provides comprehensive guidance for Layui Vue component library including components, layer dialogs, and utilities. Use when the user asks about Layui Vue, needs to use Layui components in Vue 3, or implement UI components.
element-plus-vue3
Provides comprehensive guidance for Element Plus Vue 3 component library including installation, components, themes, internationalization, and API reference. Use when the user asks about Element Plus for Vue 3, needs to build Vue 3 applications with Element Plus, or customize component styles.
bootstrap-vue3
Provides comprehensive guidance for Bootstrap Vue 3 component library including Bootstrap components, grid system, utilities, and Vue 3 integration. Use when the user asks about Bootstrap Vue 3, needs to use Bootstrap components in Vue 3, or implement responsive layouts.
vuex-vue2
Provides comprehensive guidance for Vuex 2.x state management in Vue 2 applications including state, mutations, actions, getters, modules, and plugins. Use when the user asks about Vuex for Vue 2, needs to manage state in Vue 2 applications, or implement Vuex patterns.
vue3
Guidance for Vue 3 using the official guide and API reference. Use when the user needs Vue 3 concepts, patterns, or API details to build components, apps, and tooling.
vue2
Provides comprehensive guidance for Vue 2.x development including Options API, components, directives, lifecycle hooks, computed properties, watchers, Vuex state management, and Vue Router. Use when the user asks about Vue 2, needs to create Vue 2 components, implement reactive data binding, handle component communication, or work with Vue 2 ecosystem tools.
vue-router
Provides comprehensive guidance for Vue Router including route configuration, navigation, dynamic routes, nested routes, route guards, programmatic navigation, and route meta. Use when the user asks about Vue Router, needs to set up routing, implement navigation guards, handle route parameters, or manage route transitions.
vue-router-v4
Provides comprehensive guidance for Vue Router v4 including route configuration, navigation, nested routes, route guards, and Vue 3 integration. Use when the user asks about Vue Router v4, needs to set up routing for Vue 3 applications, implement navigation guards, or work with Vue Router v4 features.
vue-router-v3
Guidance for Vue Router v3 using the official Installation, Guide, and API docs. Use when users need routing setup, navigation patterns, or API details for Vue 2 projects.
pinia
Provides comprehensive guidance for Pinia state management including stores, state, getters, actions, plugins, and TypeScript support. Use when the user asks about Pinia, needs to manage application state, create stores, implement state persistence, or migrate from Vuex.
vscode-project-init
Scaffold a new VS Code extension project using TypeScript via Yeoman generator (yo code), creating src/extension.ts entry point and package.json manifest. Use when the user wants to start a new VS Code extension project from scratch.