Capitalist Payments API (v1, deprecated)
The first generation of the Capitalist API: a single HTTP POST endpoint at https://api.capitalist.net where an `operation` form field selects the call (get_accounts, import_batch_advanced, process_batch, currency_rates, documents_search, get_batch_info, get_document_fee, get_documents_history_ext, get_token, is_verified_account). Credentials travel as form fields — account login plus a plain, encrypted or certificate-signed password. Capitalist has moved its documentation to https://capitalist.net/developers/deprecated/v1/api; the host still answers and self-reports API version 1.9.8, but no sunset date is published.