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# Starting FastAPI
* To start a FastAPI app you will need to set up first a path operation
```python
# Import FastAPI framework
from fastapi import FastAPI
# Set up the App
app = FastAPI()
# Set up the path operation
@app.get("/")
async def root():
return {"message": "Hello World"}
```
* Then you will have to run the uvicorn webserver by using the file name followed by the app name in said file
```python
uvicorn main:app
# If you get an error that uvicorn is not valid use:
python -m uvicorn main:app --reload
```
* This should return the information that the browser is running on local host
```bash
INFO: Started server process [21240]
INFO: Waiting for application startup.
INFO: Application startup complete.
INFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```
* Now you can access the API in the browser and see the message
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