Balance check

Returns available balance and unreported credit/debit totals for the authenticated site. Requires merchant bearer token (`Authorization: Bearer …`). **Authentication errors:** Authentication can return codes `1000`-`1008` for client IP, token, site, whitelist, signature, session, or token scope validation. See [Authentication](/docs/authentication) and [Error codes](/docs/error-codes).

Signing up takes about a minute and comes with a sandbox site and test API keys.