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1. If you don't have an account, please self register at https://apps.ecmwf.int/registration/ and then go to the steps below.

2. Login https://apps.ecmwf.int/auth/login/

3. Retrieve you key at https://api.ecmwf.int/v1/key/

4. Copy the information in this page and paste it in the file $HOME/.ecmwfapirc (Unix/Linux) or %USERPROFILE%\.ecmwfapirc (Windows; see how to create a file with a leading dot)
   

{
    "url"   : "https://api.ecmwf.int/v1",
    "key"   : "XXXXXXXXXXXXXXXXXXXXXX",
    "email" : "john.smith@example.com"
}

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python python

Python

You can install the ecmwfapi python library by running on Unix/Linux:

sudo pip install https://software.ecmwf.int/wiki/download/attachments/56664858/ecmwf-api-client-python.tgz

or on Windows:

pip install https://software.ecmwf.int/wiki/download/attachments/56664858/ecmwf-api-client-python.tgz

If you cannot run the sudo or pip commands, just download the ecmwf-api-client-python.tgz. Extract its content and copy the module ecmwfapi to a directory pointed by the environment variable PYTHONPATH.

We also have some API for several client languages. Note that Python is the most tested and supported.

Perl

You need to download the clien, extract its content and to a directory pointed by the environment variable  PERL5LIB . This code relies on the JSON perl module, as well as libwww-perl and Crypt::SSLeay.

Java

You need to download the client and you will also need the Java JSON package.