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

#!/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",
})