e-arveldaja MCP server

Werkzeug is a hosted Model Context Protocol (MCP) server that connects Estonian e-arveldaja (RIK e-Financials) to your AI assistant. Claude, ChatGPT, Cursor and any MCP-compatible client can list invoices, post transactions, run reports and more through MCP tools — no custom integration required.

Get started Read the setup guide

Supported tools

100 e-arveldaja (RIK e-Financials) tools, from the live tool catalog.

49 of them are read-only and available on Free; the rest need Pro.

Category Tools Examples
invoices26create_purchase_invoice, create_sales_invoice, delete_purchase_invoice, …
transactions12create_transaction, delete_transaction, delete_transaction_file, …
accounts11create_bank_account, delete_bank_account, get_bank_account, …
journals10create_journal, delete_journal, delete_journal_file, …
clients9create_client, deactivate_client, delete_client, …
invoice settings7create_invoice_series, delete_invoice_series, get_invoice_info, …
products7create_product, deactivate_product, delete_product, …
financial statements3compute_balance_sheet, compute_profit_and_loss, compute_trial_balance
reference3list_currencies, list_sale_articles, list_templates
reports3financial_summary, match_transaction_to_supplier, reconciliation_report
account balance2compute_account_balance, compute_client_debt
aging analysis2compute_payables_aging, compute_receivables_aging
bank reconciliation2analyze_unconfirmed_transactions, reconcile_bank_transactions
bank classification1classify_bank_transactions
CAMT.0531process_camt053
month-end close1month_end_close_checklist

See the full tool catalog →

How to connect

  1. Register at the dashboard — free tier included, no credit card.
  2. In e-Financials admin: Settings → General settings → e-Financials API access permits. Click Add new API access permit, name it (e.g. MCP), and enter our server IP (shown in the docs and the dashboard) in the IP addresses field. Save, then click Download key on your row.
  3. Add accounting credentials in the dashboard (RIK e-Financials API permit). After saving credentials you receive a one-time MCP API key — copy it into Claude Desktop, Cursor, or another MCP client.

Works with Claude, ChatGPT, Cursor, and any MCP-compatible client. Client setup guides →

Which plan

Free includes the read-only tools with no monthly call limit and 1 connected company. Pro (€6 / month, VAT excluded) unlocks the full toolkit — create, update, report — with 2,000 included calls / month (fair use, not a hard cutoff) and unlimited connected companies. Each MCP key is bound to one company.

View pricing →

Your data

Credentials are encrypted at rest on EU servers in Helsinki. Tool calls pass through to your connected accounting API — we never store the response data. Security →