Azure SDK for JavaScript

import { SecretClient } from "@azure/keyvault-secrets";
import { ManagedIdentityCredential } from "@azure/identity";

function removeUserAgentPolicy() {
  return {
    name: "removeUserAgentPolicy",
    sendRequest(request, next) {
      request.headers.delete("User-Agent");
      return next(request);
    },
  };
}

const credential = new ManagedIdentityCredential();
const secretClient = new SecretClient("https://your-keyvault-name.vault.azure.net", credential, {
  additionalPolicies: [
    {
      position: "perCall",
      policy: removeUserAgentPolicy(),
    },
  ],
});