diff --git a/lib/apis/coingecko.js b/lib/apis/coingecko.js
index 5666170..9cb01f4 100644
--- a/lib/apis/coingecko.js
+++ b/lib/apis/coingecko.js
@@ -1,23 +1,27 @@
 const request = require('postman-request');
 const base_url = 'https://api.coingecko.com/api/v3/';
 
-function get_coin_list(cb) {
-  request({ uri: base_url + 'coins/list?include_platform=false', json: true}, function (error, response, body) {
+function get_coin_list(api_key, cb) {
+  request({ uri: base_url + 'coins/list?include_platform=false' + (api_key == null || api_key == '' ? '' : '&x_cg_demo_api_key=' + api_key), json: true}, function (error, response, body) {
     if (error)
       return cb(error, []);
     else if (body == null || body == '' || typeof body !== 'object')
-      return cb('No data returned', []);    
+      return cb('No data returned', []);
+    else if (body['status'] != null && body['status']['error_message'] != null && body['status']['error_message'] != '')
+      return cb(body['status']['error_message'], []);
     else
       return cb(null, body);
   });
 }
 
-function get_simple_price(id, currency, market_array, cb) {
-  request({ uri: base_url + `simple/price?ids=${id.toLowerCase()}&vs_currencies=usd${currency == null || currency == '' ? '' : `,${currency}`}`, json: true}, function (error, response, body) {
+function get_simple_price(id, currency, market_array, api_key, cb) {
+  request({ uri: base_url + `simple/price?ids=${id.toLowerCase()}&vs_currencies=usd${currency == null || currency == '' ? '' : `,${currency}`}` + (api_key == null || api_key == '' ? '' : '&x_cg_demo_api_key=' + api_key), json: true}, function (error, response, body) {
     if (error)
       return cb(error, 0, 0);
     else if (body == null || body == '' || typeof body !== 'object')
       return cb('No data returned', 0, 0);
+    else if (body['status'] != null && body['status']['error_message'] != null && body['status']['error_message'] != '')
+      return cb(body['status']['error_message'], 0, 0);
     else {
       try {
         if (market_array != null) {
@@ -59,21 +63,21 @@ function get_simple_price(id, currency, market_array, cb) {
 }
 
 module.exports = {
-  get_coin_data: function (cb) {
-    get_coin_list(function (err, coin_list) {
+  get_coin_data: function (api_key, cb) {
+    get_coin_list(api_key, function (err, coin_list) {
       return cb(err, coin_list);
     });
   },
-  get_market_prices: function (id, currency, cb) {
-    get_simple_price(id, currency, null, function (err, last_price, last_usd) {
+  get_market_prices: function (id, currency, api_key, cb) {
+    get_simple_price(id, currency, null, api_key, function (err, last_price, last_usd) {
       if (last_price == null)
         console.log(`Error: "${currency}" is not a valid coingecko api currency`);
 
       return cb(err, last_price, last_usd);
     });
   },
-  get_avg_market_prices: function (id, currency, market_array, cb) {
-    get_simple_price(id, currency, market_array, function (err, last_price, last_usd) {
+  get_avg_market_prices: function (id, currency, market_array, api_key, cb) {
+    get_simple_price(id, currency, market_array, api_key, function (err, last_price, last_usd) {
       if (last_price == null)
         console.log(`Error: "${currency}" is not a valid coingecko api currency`);
 
diff --git a/lib/settings.js b/lib/settings.js
index 031db2b..5f3f404 100644
--- a/lib/settings.js
+++ b/lib/settings.js
@@ -930,6 +930,9 @@ exports.markets_page = {
   //                           The USD fiat currency is also built-in and automatically returned from the coingecko api so there is no need to specify USD here.
   //                           For more information about which currency values are supported, you can review the vs_currencies parameter of the /simple/price api from here: https://www.coingecko.com/api/documentation
   "coingecko_currency": "BTC",
+  // "coingecko_api_key": Supply a free or paid coingecko api key for fetching USD price and/or market price via the market_price = "COINGECKO" option
+  //                      NOTE: As of Feb 2024, the free "keyless" coingecko api will be deprecated and require an api key to continue use
+  "coingecko_api_key": "",
   // default_exchange: a collection of settings that pertain to the default exchange
   //                   When the "show_market_dropdown_menu" setting is disabled, the market header menu will navigate directly to the default exchange page
   //                   The default_exchange.trading_pair is used to determine the last market price when the market_price value is set to AVERAGE
diff --git a/scripts/sync.js b/scripts/sync.js
index 293e64d..a668417 100644
--- a/scripts/sync.js
+++ b/scripts/sync.js
@@ -1026,7 +1026,7 @@ function get_market_price(market_array) {
         console.log('Calculating market price.. Please wait..');
 
         // get the market price from coingecko api
-        coingecko.get_market_prices(coingecko_id, currency, function (err, last_price, last_usd_price) {
+        coingecko.get_market_prices(coingecko_id, currency, settings.markets_page.coingecko_api_key, function (err, last_price, last_usd_price) {
           // check for errors
           if (err == null) {
             // get current stats
@@ -1050,7 +1050,7 @@ function get_market_price(market_array) {
             });
           } else {
             // coingecko api returned an error
-            console.log(err);
+            console.log(`Error: ${err}`);
             exit(1);
           }
         });
@@ -1091,7 +1091,7 @@ function get_market_price(market_array) {
           const currency = lib.get_market_currency_code();
 
           // get the market price from coingecko api
-          coingecko.get_avg_market_prices(api_ids, currency, market_array, function (mkt_err, last_price, last_usd) {   
+          coingecko.get_avg_market_prices(api_ids, currency, market_array, settings.markets_page.coingecko_api_key, function (mkt_err, last_price, last_usd) {   
             // check for errors
             if (mkt_err == null) {
               // update the last usd price
@@ -1108,7 +1108,7 @@ function get_market_price(market_array) {
               });
             } else {
               // coingecko api returned an error
-              console.log(mkt_err);
+              console.log(`Error: ${mkt_err}`);
               exit(1);
             }
           });
@@ -1118,7 +1118,7 @@ function get_market_price(market_array) {
         }
       } else {
         // coingecko api returned an error
-        console.log(coin_err);
+        console.log(`Error: ${coin_err}`);
         exit(1);
       }
     });
@@ -1173,7 +1173,7 @@ function coingecko_coin_list_api(market_symbols, cb) {
     const coingecko = require('../lib/apis/coingecko');
 
     // get the list of coins from coingecko
-    coingecko.get_coin_data(function (err, coin_list) {
+    coingecko.get_coin_data(settings.markets_page.coingecko_api_key, function (err, coin_list) {
       // check if there was an error
       if (err == null) {
           // initialize the rate limiter to wait 2 seconds between requests to prevent abusing external apis
@@ -1211,7 +1211,7 @@ function find_coingecko_id(symbol, cb) {
       }
     } else {
       // failed to get the coingecko api list
-      console.log(err);
+      console.log(`Error: ${err}`);
       return cb('');
     }
   });
diff --git a/settings.json.template b/settings.json.template
index 0997a25..bc5309a 100644
--- a/settings.json.template
+++ b/settings.json.template
@@ -1014,6 +1014,9 @@
     //                           The USD fiat currency is also built-in and automatically returned from the coingecko api so there is no need to specify USD here.
     //                           For more information about which currency values are supported, you can review the vs_currencies parameter of the /simple/price api from here: https://www.coingecko.com/api/documentation
     "coingecko_currency": "BTC",
+    // "coingecko_api_key": Supply a free or paid coingecko api key for fetching USD price and/or market price via the market_price = "COINGECKO" option
+    //                      NOTE: As of Feb 2024, the free "keyless" coingecko api will be deprecated and require an api key to continue use
+    "coingecko_api_key": "",
     // default_exchange: a collection of settings that pertain to the default exchange
     //                   When the "show_market_dropdown_menu" setting is disabled, the market header menu will navigate directly to the default exchange page
     //                   The default_exchange.trading_pair is used to determine the last market price when the market_price value is set to AVERAGE