diff --git a/lib/routes/api/accounts.js b/lib/routes/api/accounts.js
index 1768862..7d7957c 100644
--- a/lib/routes/api/accounts.js
+++ b/lib/routes/api/accounts.js
@@ -27,7 +27,7 @@ function validateTo(to) {
         break;
     }
   }
-  throw new DbErrorBadRequest(`missing or invalid to property: ${to}`);
+  throw new DbErrorBadRequest(`missing or invalid to property: ${JSON.stringify(to)}`);
 }
 async function validateCreateCall(logger, sid, req) {
   const {lookupApplicationBySid} = require('jambonz-db-helpers')(config.get('mysql'), logger);
@@ -35,6 +35,7 @@ async function validateCreateCall(logger, sid, req) {
 
   if (req.user.account_sid !== sid) throw new DbErrorBadRequest(`unauthorized createCall request for account ${sid}`);
 
+  obj.account_sid = sid;
   if (!obj.from) throw new DbErrorBadRequest('missing from parameter');
   validateTo(obj.to);
 
@@ -57,8 +58,18 @@ async function validateCreateCall(logger, sid, req) {
       throw new DbErrorBadRequest(`application_sid not found ${obj.application_sid}`);
     }
   }
+  else {
+    Object.assign(obj, {
+      speech_synthesis_vendor: 'google',
+      speech_synthesis_voice: 'en-US-Wavenet-C',
+      speech_recognizer_vendor: 'google',
+      speech_recognizer_language: 'en-US'
+    });
+  }
 
-  if (!obj.call_hook || (obj.call_hook && !obj.call_hook.url)) throw new DbErrorBadRequest('either url or application_sid required');
+  if (!obj.call_hook || (obj.call_hook && !obj.call_hook.url)) {
+    throw new DbErrorBadRequest('either url or application_sid required');
+  }
 }
 
 async function validateAdd(req) {
diff --git a/lib/swagger/swagger.yaml b/lib/swagger/swagger.yaml
index 8251ae8..4d95090 100644
--- a/lib/swagger/swagger.yaml
+++ b/lib/swagger/swagger.yaml
@@ -655,13 +655,13 @@ paths:
                   description: sip realm for registration
                   example: sip.mycompany.com
                 registration_hook:
-                  $ref: '#/components/Webhook'
+                  $ref: '#/components/schemas/Webhook'
                   description: authentication webhook for registration
                 device_calling_hook:
-                  $ref: '#/components/Webhook'
+                  $ref: '#/components/schemas/Webhook'
                   description: webhook for inbound call from registered devices
                 error_hook:
-                  $ref: '#/components/Webhook'
+                  $ref: '#/components/schemas/Webhook'
                   description: webhook for reporting errors from malformed applications
                 service_provider_sid:
                   type: string
@@ -916,10 +916,10 @@ paths:
                   type: string
                   format: uuid
                 call_hook:
-                  $ref: '#/components/Webhook'
+                  $ref: '#/components/schemas/Webhook'
                   description: authentication webhook for inbound calls from PSTN
                 call_status_hook:
-                  $ref: '#/components/Webhook'
+                  $ref: '#/components/schemas/Webhook'
                   description: webhook for call status events
                 speech_synthesis_vendor:
                   type: string
@@ -1075,21 +1075,24 @@ paths:
                   format: uuid
                   description: The application to use to control this call.  Either applicationSid or url is required.
                 call_hook:
-                  $ref: '#/components/Webhook'
+                  $ref: '#/components/schemas/Webhook'
                 call_status_hook:
-                  $ref: '#/components/Webhook'
+                  $ref: '#/components/schemas/Webhook'
+                  example: {"url": "https://acme.com/status", "method": "POST"}
                 from:
                   type: string
                   description: The calling party number
-                  example: +16172375089
+                  example: 16172375089
                 timeout:
                   type: integer
                   description: the number of seconds to wait for call to be answered.  Defaults to 60.
+                  example: 30
                 tag:
                   type: object
                   description: initial set of customer-supplied metadata to associate with the call (see jambonz 'tag' verb)
+                  example: {"callCount": 10}
                 to:
-                  $ref: '#/components/Target'
+                  $ref: '#/components/schemas/Target'
                   description: destination for call
 
       responses:
@@ -1215,13 +1218,13 @@ components:
         sip_realm:
           type: string
         registration_hook:
-          $ref: '#/components/Webhook'
+          $ref: '#/components/schemas/Webhook'
           description: authentication webhook for registration
         device_calling_hook:
-          $ref: '#/components/Webhook'
+          $ref: '#/components/schemas/Webhook'
           description: webhook for inbound call from registered devices
         error_hook:
-          $ref: '#/components/Webhook'
+          $ref: '#/components/schemas/Webhook'
           description: webhook for reporting errors from malformed applications
         service_provider_sid:
           type: string
@@ -1242,10 +1245,10 @@ components:
           type: string
           format: uuid
         call_hook:
-          $ref: '#/components/Webhook'
+          $ref: '#/components/schemas/Webhook'
           description: authentication webhook for registration
         call_status_hook:
-          $ref: '#/components/Webhook'
+          $ref: '#/components/schemas/Webhook'
           description: authentication webhook for registration
         speech_synthesis_vendor:
           type: string
@@ -1318,6 +1321,7 @@ components:
           type: string
       required:
         - url
+      example: {"url": "https://acme.com", "method": "POST"}
     Call:
       type: object
       properties:
@@ -1394,6 +1398,7 @@ components:
               type: string
       required:
         - type
+      example: {"type": "phone", "number": "+16172375080"}
 
 security:
   - bearerAuth: []
\ No newline at end of file