How to subscribe to a 'Json to Excel' API plan You can consume our REST API by subscribing to one of our plans on RapidAPI Marketplace. 1. Register RapidAPI account. 2. Please go to Json2Xls API Pricing tab and subscribe to one of the available plans. Each paid plan has number of free requests per day. Extra requests are charged extra. 3. On Documentation tab select (or create) your RapidApi Application and copy your X-Rapidapi-Key. Use your X-Rapidapi-Key in your application or any REST client tool (for example, Fiddler).