diff --git a/lib/routes/admin-api/api-def.json b/lib/routes/admin-api/api-def.json
new file mode 100644
index 0000000000..9be80b824a
--- /dev/null
+++ b/lib/routes/admin-api/api-def.json
@@ -0,0 +1,20 @@
+{
+  "version": 2,
+  "links": {
+    "feature-toggles": {
+      "uri": "/api/admin/features"
+    },
+    "feature-archive": {
+      "uri": "/api/admin/archive"
+    },
+    "strategies": {
+      "uri": "/api/admin/strategies"
+    },
+    "events": {
+      "uri": "/api/admin/events"
+    },
+    "metrics": {
+      "uri": "/api/admin/metrics"
+    }
+  }
+}
diff --git a/lib/routes/admin-api/index.js b/lib/routes/admin-api/index.js
index 75a495c53e..fb95844be8 100644
--- a/lib/routes/admin-api/index.js
+++ b/lib/routes/admin-api/index.js
@@ -8,31 +8,29 @@ const events = require('./event.js');
 const strategies = require('./strategy');
 const metrics = require('./metrics');
 const user = require('./user');
+const apiDef = require('./api-def.json');
 
-const apiDef = {
-    version: 2,
-    links: {
-        'feature-toggles': { uri: '/api/admin/features' },
-        'feature-archive': { uri: '/api/admin/archive' },
-        strategies: { uri: '/api/admin/strategies' },
-        events: { uri: '/api/admin/events' },
-        metrics: { uri: '/api/admin/metrics' },
-    },
-};
+class AdminApi {
+    constructor(config) {
+        const router = Router();
+        this._router = router;
 
-exports.apiDef = apiDef;
+        router.get('/', (req, res) => res.json(apiDef));
+        router.use('/features', features.router(config));
+        router.use('/archive', featureArchive.router(config));
+        router.use('/strategies', strategies.router(config));
+        router.use('/events', events.router(config));
+        router.use('/metrics', metrics.router(config));
+        router.use('/user', user.router(config));
+    }
 
-exports.router = config => {
-    const router = Router();
+    index(req, res) {
+        res.json(apiDef);
+    }
 
-    router.get('/', (req, res) => res.json(apiDef));
+    router() {
+        return this._router;
+    }
+}
 
-    router.use('/features', features.router(config));
-    router.use('/archive', featureArchive.router(config));
-    router.use('/strategies', strategies.router(config));
-    router.use('/events', events.router(config));
-    router.use('/metrics', metrics.router(config));
-    router.use('/user', user.router(config));
-
-    return router;
-};
+module.exports = AdminApi;
diff --git a/lib/routes/api-def.js b/lib/routes/api-def.js
new file mode 100644
index 0000000000..6f138b02c2
--- /dev/null
+++ b/lib/routes/api-def.js
@@ -0,0 +1,25 @@
+'use strict';
+
+// export module version
+require('pkginfo')(module, 'version');
+const version = module.exports.version;
+const clientApiDef = require('./client-api/api-def.json');
+const adminApiDef = require('./admin-api/api-def.json');
+
+const apiDef = {
+    name: 'unleash-server',
+    version,
+    uri: '/api',
+    links: {
+        admin: {
+            uri: '/api/admin',
+            links: adminApiDef.links,
+        },
+        client: {
+            uri: '/api/client',
+            links: clientApiDef.links,
+        },
+    },
+};
+
+module.exports = apiDef;
diff --git a/lib/routes/client-api/client-api.json b/lib/routes/client-api/api-def.json
similarity index 100%
rename from lib/routes/client-api/client-api.json
rename to lib/routes/client-api/api-def.json
diff --git a/lib/routes/client-api/index.js b/lib/routes/client-api/index.js
index 112aa1efe2..1b516cddc7 100644
--- a/lib/routes/client-api/index.js
+++ b/lib/routes/client-api/index.js
@@ -4,7 +4,7 @@ const { Router } = require('express');
 const FeatureController = require('./feature.js');
 const MetricsController = require('./metrics.js');
 const RegisterController = require('./register.js');
-const clientApiSpec = require('./client-api.json');
+const apiDef = require('./api-def.json');
 
 class ClientApi {
     constructor(config) {
@@ -20,7 +20,7 @@ class ClientApi {
     }
 
     index(req, res) {
-        res.json(clientApiSpec);
+        res.json(apiDef);
     }
 
     router() {
@@ -28,6 +28,4 @@ class ClientApi {
     }
 }
 
-ClientApi.api = clientApiSpec;
-
 module.exports = ClientApi;
diff --git a/lib/routes/index.js b/lib/routes/index.js
index f4a9079493..b00095e0af 100644
--- a/lib/routes/index.js
+++ b/lib/routes/index.js
@@ -1,17 +1,13 @@
 'use strict';
 
 const { Router } = require('express');
-// export module version
-require('pkginfo')(module, 'version');
-
-const version = module.exports.version;
-
-const adminApi = require('./admin-api');
+const AdminApi = require('./admin-api');
 const ClientApi = require('./client-api');
 const FeatureController = require('./client-api/feature.js');
 
 const HealthCheckController = require('./health-check');
-const BackstageController = require('./backstage.js');
+const BackstageCTR = require('./backstage.js');
+const api = require('./api-def');
 
 class IndexRouter {
     constructor(config) {
@@ -19,13 +15,10 @@ class IndexRouter {
         this._router = router;
 
         router.use('/health', new HealthCheckController(config).router());
-        router.use(
-            '/internal-backstage',
-            new BackstageController(config).router()
-        );
-        router.get('/api', (req, res) => this.api(req, res));
-        router.use('/api/admin', adminApi.router(config));
-        router.use('/api/client', new ClientApi(config).router());
+        router.use('/internal-backstage', new BackstageCTR(config).router());
+        router.get(api.uri, (req, res) => res.json(api));
+        router.use(api.links.admin.uri, new AdminApi(config).router());
+        router.use(api.links.client.uri, new ClientApi(config).router());
 
         // legacy support (remove in 4.x)
         if (config.enableLegacyRoutes) {
@@ -36,23 +29,6 @@ class IndexRouter {
         }
     }
 
-    api(req, res) {
-        res.json({
-            name: 'unleash-server',
-            version,
-            links: {
-                admin: {
-                    uri: '/api/admin',
-                    links: adminApi.apiDef.links,
-                },
-                client: {
-                    uri: '/api/client',
-                    links: ClientApi.api.links,
-                },
-            },
-        });
-    }
-
     router() {
         return this._router;
     }