Prime REST API Requests

from urllib.parse import urlparse
import json, hmac, hashlib, time, os, base64, requests

API_KEY = os.environ.get('ACCESS_KEY')
SECRET_KEY = os.environ.get('SIGNING_KEY')
PASSPHRASE = os.environ.get('PASSPHRASE')

uri = 'https://api.prime.coinbase.com/v1/portfolios'
url_path = urlparse(uri).path
timestamp = str(int(time.time()))
message = timestamp + 'GET' + url_path
signature_b64 = base64.b64encode(hmac.digest(SECRET_KEY.encode(), message.encode(), hashlib.sha256))

headers = {
  'X-CB-ACCESS-SIGNATURE': signature_b64,
  'X-CB-ACCESS-timestamp': timestamp,
  'X-CB-ACCESS-KEY': API_KEY,
  'X-CB-ACCESS-PASSPHRASE': PASSPHRASE,
  'Accept': 'application/json'
}

response = requests.get(uri, headers=headers)
parsed_response = json.loads(response.text)
print(json.dumps(parsed_response, indent=3))

// native NodeJS https module
const https = require("https");
// Google's crypto-js package via https://www.npmjs.com/package/crypto-js
const CryptoJS = require("crypto-js");
// Derived from your Coinbase Prime API Key
// SIGNING_KEY: the signing key provided as a part of your API key
//  ACCESS_KEY: the access key provided as a part of your API key
//  PASSPHRASE: the PASSPHRASE key provided as a part of your API key
const SIGNING_KEY = process.env.SIGNING_KEY;
const ACCESS_KEY = process.env.ACCESS_KEY;
const PASSPHRASE = process.env.PASSPHRASE;
const REST_METHODS = {
  GET: "GET",
  POST: "POST",
  PUT: "PUT",
  DELETE: "DELETE",
};
// Your unique entity ID
const ENTITY_ID = process.env.ENTITY_ID;
// A specific portfolio ID (only necessary if relevant to the request you're making)
const PORTFOLIO_ID = process.env.PORTFOLIO_ID;
// The base URL of the API
const PROD_URL = "api.prime.coinbase.com";
// The path of the API endpoint being called
let requestPath = `/v1/portfolios/${PORTFOLIO_ID}`;
// The method of the request: GET, POST, PUT, DELETE, etc
let method = REST_METHODS.GET;
// Request signatures require a current UNIX timestamp in seconds that is
// embedded in the signed payload to verify against server clock.
const currentTimeInSecs = Math.floor(Date.now() / 1000);
// Body will be JSON (POST) or empty string (GET)
const body = "";
// Function to generate a signature using CryptoJS
function sign(str, secret) {
  const hash = CryptoJS.HmacSHA256(str, secret);
  return hash.toString(CryptoJS.enc.Base64);
}
// Function to build the payload required to sign
function buildPayload(ts, method, requestPath, body) {
  return `${ts}${method}${requestPath}${body}`;
}
// Build the string we want to sign using information defined above
const strToSign = buildPayload(currentTimeInSecs, method, requestPath, body);
// Sign it!
const sig = sign(strToSign, SIGNING_KEY);
// Use Postman's scripting objects to append the header values
const headers = new Map();
headers.set("X-CB-ACCESS-KEY", ACCESS_KEY);
headers.set("X-CB-ACCESS-PASSPHRASE", PASSPHRASE);
headers.set("X-CB-ACCESS-SIGNATURE", sig);
headers.set("X-CB-ACCESS-TIMESTAMP", currentTimeInSecs);
headers.set("Content-Type", "application/json");
const requestOptions = {
  hostname: PROD_URL,
  path: requestPath,
  method: REST_METHODS.GET,
  headers: Object.fromEntries(headers),
};
https
  .get(requestOptions, (res) => {
    let data = [];
    console.log("Status Code:", res.statusCode);
    res.on("data", (chunk) => {
      data.push(chunk);
    });
    res.on("end", () => {
      console.log("Response ended: ");
      const parsedResponse = JSON.parse(Buffer.concat(data).toString());
      console.log(parsedResponse);
    });
  })
  .on("error", (err) => {
    console.log("Error: ", err.message);
  });