All requests to the LunarCrush API v4 must include an "Authorization" http header with the value "Bearer <YourAPIToken>". You must keep these tokens secret. If you suspect your any of your access tokens have been leaked or stolen you should delete them and generate new ones.
Examples of how to make and authenticate API requests are available within the documentation of all available endpoints.
You may have up to 10 active access tokens at any time. Give each token a label to organize and track usage. All usage across all tokens is associated with your account. Your account must have sufficient balance to cover the cost of requests for all valid tokens within your account or the requests will result in an error.