All requests to our API need authentication.
then continue to OAuth Authorization.
the API token must be provided as part of the query string for all requests, using the
api_token variable, for example,
Keep in mind that an API token is tied to a specific user and company, giving access to all user's data. You can only have one active API token at any time. If you change the API token, all existing integrations using this API token will not be able to make successful requests against our API and stop working.