MCP Servers

fortnox-mcp-server

Enables AI agents to manage invoices, customers, suppliers, accounting entries, orders, and more through Fortnox's cloud accounting platform via natural language.

README

Fortnox MCP Server

Connect AI agents to Fortnox — Sweden's largest cloud accounting platform (612,000+ customers).

Manage invoices, customers, suppliers, accounting entries, orders, and more through the Model Context Protocol.

Tools (20)

Category	Tools	Description
Invoices	`list_invoices`, `get_invoice`, `create_invoice`, `send_invoice`, `get_invoice_payments`	Create, send, and track invoices
Customers	`list_customers`, `get_customer`, `create_customer`	Manage your customer database
Suppliers	`list_supplier_invoices`, `get_supplier`, `create_supplier_invoice`	Track bills and expenses
Accounting	`list_vouchers`, `create_voucher`, `get_accounts`, `get_financial_year`	Journal entries and chart of accounts
Reports	`get_company_info`, `list_projects`, `list_cost_centers`	Company info and cost tracking
Orders	`list_orders`, `create_offer`	Sales orders and quotes

Quick Start

1. Get a Fortnox Access Token

2. Configure in Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "fortnox": {
      "command": "npx",
      "args": ["-y", "fortnox-mcp-server"],
      "env": {
        "FORTNOX_ACCESS_TOKEN": "your-access-token-here"
      }
    }
  }
}

3. Start Using

Ask Claude things like:

"List all unpaid invoices"
"Create an invoice for customer 1001 with 10 hours of consulting at 1500 SEK/hr"
"Show me the chart of accounts"
"What supplier invoices are overdue?"
"Create a quote for Acme AB"

Install from Source

git clone https://github.com/viggojohansson/fortnox-mcp-server.git
cd fortnox-mcp-server
npm install
npm run build

Then configure Claude Desktop to point to the local build:

{
  "mcpServers": {
    "fortnox": {
      "command": "node",
      "args": ["/path/to/fortnox-mcp-server/dist/index.js"],
      "env": {
        "FORTNOX_ACCESS_TOKEN": "your-access-token-here"
      }
    }
  }
}

Environment Variables

Variable	Required	Description
`FORTNOX_ACCESS_TOKEN`	Yes	OAuth2 access token from Fortnox

API Reference

This server wraps the Fortnox REST API v3. Rate limit: 25 requests per 5 seconds.

License

MIT

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