Using the REST API with cURL¶ curl is a command-line tool for transferring data using various protocols. It can be used to interact with the Redmine REST API. Using JSON¶ Here is a simple example of a command that can be used to update an issue: curl -v -H "Content-Type: application/json" -X PUT --data-binary "@388.json" -u login:password http://redmine/issues/388.json curl -v -H "Content-Type: ap