Supported tools
77 Merit Aktiva tools, from the live tool catalog.
| Category | Tools | Examples |
|---|---|---|
| customers | 8 | merit_create_customer, merit_create_customer_group, merit_get_customer_debts_report, … |
| sales invoices | 8 | merit_create_sales_invoice, merit_create_sales_invoice_payment, merit_delete_sales_invoice, … |
| purchase invoices | 7 | merit_create_purchase_invoice, merit_create_purchase_invoice_payment, merit_delete_purchase_invoice, … |
| reference | 7 | merit_list_banks, merit_list_cost_centers, merit_list_departments, … |
| sales offers | 7 | merit_create_invoice_from_sales_offer, merit_create_sales_offer, merit_create_sales_offer_payment, … |
| items | 5 | merit_create_item_groups, merit_create_items, merit_list_item_groups, … |
| prices | 5 | merit_get_price, merit_list_discounts, merit_list_prices, … |
| recurring invoices | 5 | merit_create_recurring_invoice, merit_get_recurring_invoice, merit_list_recurring_invoice_addresses, … |
| vendors | 5 | merit_create_vendor, merit_create_vendor_group, merit_list_vendor_groups, … |
| fixed assets | 4 | merit_create_fixed_assets, merit_list_fixed_asset_employees, merit_list_fixed_asset_locations, … |
| inventory | 4 | merit_create_inventory_movement, merit_get_inventory_report, merit_list_inventory_movements, … |
| ledger | 4 | merit_create_gl_batch, merit_get_gl_batch, merit_list_gl_batches, … |
| payments | 3 | merit_delete_payment, merit_list_payment_types, merit_list_payments |
| reports | 3 | merit_get_balance_report, merit_get_profit_report, merit_get_sales_report |
| accounts | 1 | merit_list_accounts |
| taxes | 1 | merit_list_taxes |
How to connect
- Upgrade to Pro+ (or receive a complimentary Pro+ grant), then open the dashboard.
- Add a company, choose Merit Aktiva, and paste your API ID and API key from Settings → API Settings. Merit Pro/Premium is required on their side. Choose Estonia (aktiva.merit.ee) or Poland (360 Księgowość).
- Save to get a one-time MCP API key, then connect your client using the guides below. Tool names are prefixed with merit_.
Need credentials? Create them in Merit Settings → API Settings. Merit has no sandbox — a free test company is separate from your live books. Credentials from the wrong company will not show your real data.
Works with Claude, ChatGPT, Cursor, and any MCP-compatible client. Client setup guides →
Which plan
Merit Aktiva MCP tools require a Pro+ (€10 / month, VAT excluded) or Custom plan. Pro+ includes everything in Pro, plus Erply Books and Merit Aktiva tools (read and write) and unlimited connected companies. Each Merit company gets its own MCP URL and key — the same multi-company model as RIK.
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 →