app can be run by 1) npm install 2) npm start Test can be done by command npm test use postman for testing api for auth token the request body would be of form { 'username':'anystring', 'password':'anystring' } for json patch the request would be of form req: POST /json-patch { header:token body : JSON Object, patch: JSON Patch Object } for image resizer the request would be of form { header:token url:Imageurl }