Work with OVH-Api using Postman Pre-request scripts (Blog post: https://blog.romainnorberg.be/post/work-with-ovh-api-using-postman)

pre-request-script

pm.sendRequest({
    url: "https://api.ovh.com/1.0/auth/time",
    method: "GET",
    headers: {
        'Content-Type': 'application/json; charset=utf-8'
    },
    body: {}
 },
 function (err, res) {
     
    pm.expect(err).to.not.be.ok;
    pm.expect(res).to.have.property('code', 200);
    pm.expect(res).to.have.property('status', 'OK');
    
    var serverTimestamp = res.text();
    postman.setGlobalVariable("lf_ovh_api_app_server_timestamp", serverTimestamp);
    
    var time_delta = serverTimestamp - Math.round(new Date().getTime()/1000);
    var now = Math.round(new Date().getTime()/1000) + time_delta;
    var body = '';
    
    postman.setGlobalVariable("lf_ovh_api_app_timestamp", now);
    
    var toSign = environment.lf_ovh_api_app_secret + '+' + environment.lf_ovh_api_app_consumer_key + '+' + pm.request.method + '+' + pm.request.url.toString() + '+' + body + '+' + now;
    
    var signature = '$1$' + CryptoJS.SHA1(toSign);
    
    postman.setGlobalVariable("lf_ovh_api_app_consumer_signature", signature);
 }
);

request.curl

curl -X GET \
  https://api.ovh.com/1.0/sms \
  -H 'Content-Type: application/json; charset=utf-8' \
  -H 'X-Ovh-Application: xxxxxx' \
  -H 'X-Ovh-Consumer: {{lf_ovh_api_app_consumer_key}}' \
  -H 'X-Ovh-Signature: {{lf_ovh_api_app_consumer_signature}}' \
  -H 'X-Ovh-Timestamp: {{lf_ovh_api_app_timestamp}}' \
  -H 'cache-control: no-cache'