diff --git a/docs/config.rst b/docs/config.rst
index 3bc1a5a..f18be8e 100644
--- a/docs/config.rst
+++ b/docs/config.rst
@@ -8,6 +8,9 @@ Example::
 
   {
     "options": {
+      "auth": {
+        "keyName": "api_key"
+      },
       "paths": {
         "root": "",
         "fonts": "fonts",
@@ -58,6 +61,11 @@ Example::
 ``options``
 ===========
 
+``auth``
+---------
+
+Defines another name for the key query parameter in ``keyName``. Default is ``key``.
+
 ``paths``
 ---------
 
diff --git a/src/serve_style.js b/src/serve_style.js
index fb75ad8..a744697 100644
--- a/src/serve_style.js
+++ b/src/serve_style.js
@@ -11,13 +11,13 @@ const utils = require('./utils');
 
 const httpTester = /^(http(s)?:)?\/\//;
 
-const fixUrl = (req, url, publicUrl, opt_nokey) => {
+const fixUrl = (req, url, publicUrl, opt_nokey, options) => {
   if (!url || (typeof url !== 'string') || url.indexOf('local://') !== 0) {
     return url;
   }
   const queryParams = [];
-  if (!opt_nokey && req.query.key) {
-    queryParams.unshift(`key=${encodeURIComponent(req.query.key)}`);
+  if (!opt_nokey && req.query[options.auth.keyName]) {
+    queryParams.unshift(`${options.auth.keyName}=${encodeURIComponent(req.query[options.auth.keyName])}`);
   }
   let query = '';
   if (queryParams.length) {
@@ -39,14 +39,14 @@ module.exports = {
       const styleJSON_ = clone(item.styleJSON);
       for (const name of Object.keys(styleJSON_.sources)) {
         const source = styleJSON_.sources[name];
-        source.url = fixUrl(req, source.url, item.publicUrl);
+        source.url = fixUrl(req, source.url, item.publicUrl, false, options);
       }
       // mapbox-gl-js viewer cannot handle sprite urls with query
       if (styleJSON_.sprite) {
-        styleJSON_.sprite = fixUrl(req, styleJSON_.sprite, item.publicUrl, true);
+        styleJSON_.sprite = fixUrl(req, styleJSON_.sprite, item.publicUrl, false, options);
       }
       if (styleJSON_.glyphs) {
-        styleJSON_.glyphs = fixUrl(req, styleJSON_.glyphs, item.publicUrl, false);
+        styleJSON_.glyphs = fixUrl(req, styleJSON_.glyphs, item.publicUrl, false, options);
       }
       return res.send(styleJSON_);
     });
diff --git a/src/server.js b/src/server.js
index 59de3cd..7ab50e8 100644
--- a/src/server.js
+++ b/src/server.js
@@ -69,6 +69,10 @@ function start(opts) {
   }
 
   const options = config.options || {};
+
+  options.auth = options.auth || {};
+  options.auth.keyName = options.auth.keyName || 'key';
+
   const paths = options.paths || {};
   options.paths = paths;
   paths.root = path.resolve(
@@ -243,7 +247,9 @@ function start(opts) {
 
   app.get('/styles.json', (req, res, next) => {
     const result = [];
-    const query = req.query.key ? (`?key=${encodeURIComponent(req.query.key)}`) : '';
+    const query = req.query[options.auth.keyName]
+      ? `?${options.auth.keyName}=${encodeURIComponent(req.query[options.auth.keyName])}`
+      : '';
     for (const id of Object.keys(serving.styles)) {
       const styleJSON = serving.styles[id].styleJSON;
       result.push({
@@ -267,7 +273,7 @@ function start(opts) {
       }
       info.tiles = utils.getTileUrls(req, info.tiles, path, info.format, opts.publicUrl, {
         'pbf': options.pbfAlias
-      });
+      }, options);
       arr.push(info);
     }
     return arr;
@@ -318,9 +324,12 @@ function start(opts) {
           data['server_version'] = `${packageJson.name} v${packageJson.version}`;
           data['public_url'] = opts.publicUrl || '/';
           data['is_light'] = isLight;
-          data['key_query_part'] =
-            req.query.key ? `key=${encodeURIComponent(req.query.key)}&` : '';
-          data['key_query'] = req.query.key ? `?key=${encodeURIComponent(req.query.key)}` : '';
+          data['key_query_part'] = req.query[options.auth.keyName]
+            ? `${options.auth.keyName}=${encodeURIComponent(req.query[options.auth.keyName])}&`
+            : '';
+          data['key_query'] = req.query[options.auth.keyName]
+            ? `?${options.auth.keyName}=${encodeURIComponent(req.query[options.auth.keyName])}`
+            : '';
           if (template === 'wmts') res.set('Content-Type', 'text/xml');
           return res.status(200).send(compiled(data));
         });
@@ -347,7 +356,7 @@ function start(opts) {
 
         style.xyz_link = utils.getTileUrls(
           req, style.serving_rendered.tileJSON.tiles,
-          `styles/${id}`, style.serving_rendered.tileJSON.format, opts.publicUrl)[0];
+          `styles/${id}`, style.serving_rendered.tileJSON.format, opts.publicUrl, null, options)[0];
       }
     }
     const data = clone(serving.data || {});
@@ -368,7 +377,7 @@ function start(opts) {
         data_.xyz_link = utils.getTileUrls(
           req, tilejson.tiles, `data/${id}`, tilejson.format, opts.publicUrl, {
             'pbf': options.pbfAlias
-          })[0];
+          }, options)[0];
       }
       if (data_.filesize) {
         let suffix = 'kB';
diff --git a/src/utils.js b/src/utils.js
index 6037e20..fcfd43f 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -9,7 +9,7 @@ const glyphCompose = require('@mapbox/glyph-pbf-composite');
 
 module.exports.getPublicUrl = (publicUrl, req) => publicUrl || `${req.protocol}://${req.headers.host}/`;
 
-module.exports.getTileUrls = (req, domains, path, format, publicUrl, aliases) => {
+module.exports.getTileUrls = (req, domains, path, format, publicUrl, aliases, options) => {
 
   if (domains) {
     if (domains.constructor === String && domains.length > 0) {
@@ -37,10 +37,9 @@ module.exports.getTileUrls = (req, domains, path, format, publicUrl, aliases) =>
     domains = [req.headers.host];
   }
 
-  const key = req.query.key;
   const queryParams = [];
-  if (req.query.key) {
-    queryParams.push(`key=${encodeURIComponent(req.query.key)}`);
+  if (req.query[options.auth.keyName]) {
+    queryParams.push(`${options.auth.keyName}=${encodeURIComponent(req.query[options.auth.keyName])}`);
   }
   if (req.query.style) {
     queryParams.push(`style=${encodeURIComponent(req.query.style)}`);