Fake api with data to test my user interface in angularjs

I am building a user interface in angularjs and I want to test my api signature on some remote server that responds according to the signature. For example GET request api/DocumentType/GetAll returns a json that I know the format and use .

I have created apis with POSTMAN chrome tool but it test the api not the client. But me i dont care about the api.I want to test my client for the specific api with specified signature. So is there any tool that I can create the api format, response and the data to fech so that I can test my UI.

I have also tested json placeholder but it does not support api creation and data hosting. most of all i need the free one