See Brief request syntax to understand each keyword.
Please note:
In this page you will find some examples in Python which is fully tested and supported.
You may wish to visit the Web API Downloads
Python
#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer
server = ECMWFDataServer()
server.retrieve({
"class": "ti",
"dataset": "tigge",
"date": "2019-03-01",
"expver": "prod",
"grid": "2/2",
"area": "70/-130/30/-60",
"levtype": "sfc",
"origin": "ecmf",
"param": "168",
"step": "0/6",
"time": "00:00:00",
"type": "fc",
"target": "tigge-2019-03-01.grib",
})