This is the Professional API
Test Sandbox.

  1. You may test any subscription tier for free in this demo environment.
  2. You should reference the API Documentation and use domain sandbox-api.coinmarketcap.com for your test API calls.
  3. You should be aware that test market data is not live data in this testing sandbox.
    /latest data endpoints will always return data from 2018-08-17.
    /historical data endpoints are restricted to a 2 week period from
    2018-08-06T00:04:04Z to 2018-08-17T08:49:14Z.
  4. When you're ready to integrate live data, signup in the production environment.

Get a test API Key