If you want to protect your application from unauthorized access, you can enable key based authentication.

To enable authentication change your server.py file to:

from remote_functions import remote, start, Settings

settings = Settings()
settings.authorization = "super_secret_key"


@remote(enforce_types=True, settings=settings)
def add(a: int, b: int):
    return a + b


if __name__ == '__main__':
    start()

Then in client.py add the authorization argument

from remote_functions import Executor

api_url = "http://127.0.0.1:8000"
ex = Executor(api_url, authorization="super_secret_key")

resp = ex.execute("add", a=2, b=3)
if resp.exit_code == 0:
    # function executed successfully
    print(resp.response)  # 5
elif resp.exit_code == 1:
    # function arguments were malformed
    print(resp.response)
elif resp.exit_code == 2:
    # function had an exception during execution
    print(resp.response)  # gives us the full traceback for easy debugging

To deploy your application for production you just have to slightly modify your server.py file by changing the host and port

from remote_functions import remote, start


@remote(enforce_types=True)
def add(a: int, b: int):
    return a + b


if __name__ == '__main__':
    start(host="0.0.0.0", port=80)