I have the following as my request for creating a new VF page via Tooling API:
{"Name" : "TestPage", "MasterLabel" : "TestPage", "Markup" : "< apex:page standardController='Car__c'>< /apex:page>"}
But the response is an error:
[{"message":"Object type not accessible. Please check permissions and make sure the object is not in development mode: sObject type 'Car__c' is not supported.: Markup","errorCode":"FIELD_INTEGRITY_EXCEPTION","fields":["Markup"]}]
Yes the custom object Car__c is deployed. Yes I am a system admin. No I don't know what's going on. Any help is appreciated.