Lists countries available for cost calculation

Authentication

This endpoint accepts any one of the following token types:

• Company-scoped access token (OAuth2AuthorizationCode) — obtained through the Authorization Code flow or the Refresh Token flow. See Authentication for partners.
• Client credentials access token (OAuth2ClientCredentials) — obtained through the Client Credentials flow or the Refresh Token flow. See Authentication for partners.
• Customer API token (CustomerAPIToken) — generated by the customer on their Integration Settings page. See Authorization for customers.
• Client token (ClientToken) — a partner client_token, accepted only on marketing endpoints. See Authentication for partners.