MCP server for Fortnox accounting software — manage invoices, customers, suppliers, accounting, and more via AI agents
MCP server for Fortnox accounting software — manage invoices, customers, suppliers, accounting, and more via AI agents. That is what the fortnox mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.
Connect AI agents to Fortnox — Sweden's largest cloud accounting platform (612,000+ customers).
Installation goes through your MCP client rather than a global install: point it at npm on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
The server publishes 7 tools. What each one is for:
Category — ToolsInvoices — list_invoices, get_invoice, create_invoice, send_invoice, get_invoice_paymentsCustomers — list_customers, get_customer, create_customerSuppliers — list_supplier_invoices, get_supplier, create_supplier_invoiceAccounting — list_vouchers, create_voucher, get_accounts, get_financial_yearReports — get_company_info, list_projects, list_cost_centersOrders — list_orders, create_offerConfiguration is passed through the environment: FORTNOX_ACCESS_TOKEN. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Fortnox's toolset — Category, Invoices, Customers and 4 more — is a fair guide to whether it matches your workflow. It is maintained by proviscale; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Category | Tools |
| Invoices | list_invoices, get_invoice, create_invoice, send_invoice, get_invoice_payments |
| Customers | list_customers, get_customer, create_customer |
| Suppliers | list_supplier_invoices, get_supplier, create_supplier_invoice |
| Accounting | list_vouchers, create_voucher, get_accounts, get_financial_year |
| Reports | get_company_info, list_projects, list_cost_centers |
| Orders | list_orders, create_offer |
{
"mcpServers": {
"fortnox": {
"command": "npx",
"args": ["-y", "fortnox-mcp-server"],
"env": {
"FORTNOX_ACCESS_TOKEN": "your-access-token-here"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| FORTNOX_ACCESS_TOKEN | Credential the server authenticates with. | Yes |
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