Publish your Google Sheet as a CSV, by going to File > Publish to the web & select CSV in place of Web page. Copy the URL generated there.

Enter the URL in the GSON app, it will generate your api on the fly. It will create a array of objects from your CSV, has not been tested with complex spreadsheets.

Use the api in your project as you like. Open source on Github & CORS has been enabled for eay access. Do not use this tool to generate APIs with sensitive data.