REST API RPC testing

i new in learn frappe i need how create api file and i make the method return the string hello word and test on postman

please helpe any one.

Have a look at:

https://frappe.io/docs/user/en/guides/integration/rest_api

thank you @netchampfaris

i looked link
this code python
@frappe.whitelist(allow_guest=True)
def hello():
return ‘hello world’

how connect to api return response
{
“message”: “hello world”
}