1. Creating a new API Key

Once you have signed up and logged in to your CoinGecko account, go to Developer Dashboard:

2. Making API Request

The root URL for the CoinGecko Public Demo Plan API is https://api.coingecko.com/api/v3/.
Refer to the Authentication page for detailed information.
For a demonstration using the Ping Endpoint, use the following example:
https://api.coingecko.com/api/v3/ping?x_cg_demo_api_key=YOUR_API_KEY
Feel free to experiment with Ping or other endpoints in the documentation by entering your API Key in the x-cg-demo-api-key section and clicking the "Try It!" button.

Go to Developer's Dashboard and click “Edit” button on a specific API Key.
In case the API Key is compromised, you may delete the API Key by clicking the "Delete Key" button.
You may also update the label and save the changes by clicking "Confirm" button.

You can monitor your API usage in the Usage Report section, which provides details such as:
- Total Monthly API Calls.
- Remaining Monthly API Calls.
- Rate Limit (Request Per Minute) — maximum number of API requests allowed in one minute.
- Last Used - the timestamp of the last used instance.

You can also check your full historical usage by specifying API Keys, timeframe or date range. You may export as CSV for more comprehensive view.