fortnox-mcp-server

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[](https://modelcontextprotocol.io) [](https://www.typescriptlang.org) [](https://www.fortnox.se/developer) [](LICENSE)

A read-only MCP server for the [Fortnox](https://www.fortnox.se) ERP API.

Give your AI agent direct access to supplier invoices, customer invoices, payments, suppliers, customers, articles, and company information — without opening Fortnox.

Quick Start · Getting Started · Tools Reference · API Documentation · Configuration

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This MCP (Model Context Protocol) server wraps the Fortnox REST API and exposes 14 read-only tools that any MCP-compatible AI agent can use to query your Fortnox account.

• List and inspect supplier invoices — filter by status (unpaid, overdue, pending, etc.)
• List and inspect customer invoices — filter by customer, date range, OCR, and more
• View payments for both supplier and customer invoices
• Browse suppliers, customers, and articles/products
• Retrieve company information and settings

• No create, update, or delete operations
• No access to payroll, offers, orders, or warehouse
• No direct database access — all data comes through the official Fortnox API

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Key features:

• OAuth2 with auto-refresh — tokens refresh automatically, no manual intervention
• Rate limiting — respects Fortnox's 25 requ