Fortnox
This server connects Claude to Fortnox, the Swedish accounting system, exposing the full API for managing invoices, customers, suppliers, and vouchers. You get operations for creating and bookkeeping invoices, approving supplier invoices, searching vouchers, and running analytics like cash flow forecasts and gross margin trends. It ships in two modes: remote mode where users authorize through a browser with no credential setup, and local mode where you run it with your own Fortnox app credentials. The tool set covers everything from basic CRUD on customers and accounts to business intelligence queries like order pipeline analysis and period comparisons. Reach for this when you need Claude to handle Swedish accounting workflows or answer financial questions by querying Fortnox directly.
- GitHub stars
- 30
- tools
- 51
- auth
- Secret needed
- transport
- STDIO
- env vars
- 3
- last updated
- Jan 25, 2026
Tools
51 toolsPublic tool metadata for what this MCP can expose to an agent.
fortnox_list_customersList and search customers
List and search customers
No parameter schema in public metadata yet.
fortnox_get_customerGet customer details
Get customer details
No parameter schema in public metadata yet.
fortnox_create_customerCreate new customer
Create new customer
No parameter schema in public metadata yet.
fortnox_update_customerUpdate customer
Update customer
No parameter schema in public metadata yet.
fortnox_delete_customerDelete customer
Delete customer
No parameter schema in public metadata yet.
fortnox_list_invoicesList invoices with filtering
List invoices with filtering
No parameter schema in public metadata yet.
fortnox_get_invoiceGet invoice details with line items
Get invoice details with line items
No parameter schema in public metadata yet.
fortnox_create_invoiceCreate new invoice
Create new invoice
No parameter schema in public metadata yet.
fortnox_update_invoiceUpdate draft invoice
Update draft invoice
No parameter schema in public metadata yet.
fortnox_bookkeep_invoiceBookkeep invoice
Bookkeep invoice
No parameter schema in public metadata yet.
fortnox_cancel_invoiceCancel invoice
Cancel invoice
No parameter schema in public metadata yet.
fortnox_credit_invoiceCreate credit note
Create credit note
No parameter schema in public metadata yet.
fortnox_send_invoice_emailSend invoice by email
Send invoice by email
No parameter schema in public metadata yet.
fortnox_list_suppliersList and search suppliers
List and search suppliers
No parameter schema in public metadata yet.
fortnox_get_supplierGet supplier details
Get supplier details
No parameter schema in public metadata yet.
fortnox_create_supplierCreate new supplier
Create new supplier
No parameter schema in public metadata yet.
fortnox_update_supplierUpdate supplier
Update supplier
No parameter schema in public metadata yet.
fortnox_delete_supplierDelete supplier
Delete supplier
No parameter schema in public metadata yet.
fortnox_list_supplier_invoicesList supplier invoices with filtering
List supplier invoices with filtering
No parameter schema in public metadata yet.
fortnox_get_supplier_invoiceGet supplier invoice details
Get supplier invoice details
No parameter schema in public metadata yet.
fortnox_approve_supplier_invoiceApprove supplier invoice for payment
Approve supplier invoice for payment
No parameter schema in public metadata yet.
fortnox_payables_reportGet accounts payable aging report
Get accounts payable aging report
No parameter schema in public metadata yet.
fortnox_list_ordersList sales orders with filtering
List sales orders with filtering
No parameter schema in public metadata yet.
fortnox_list_offersList offers/quotes with filtering
List offers/quotes with filtering
No parameter schema in public metadata yet.
fortnox_list_accountsList chart of accounts
List chart of accounts
No parameter schema in public metadata yet.
fortnox_get_accountGet account details
Get account details
No parameter schema in public metadata yet.
fortnox_create_accountCreate new account
Create new account
No parameter schema in public metadata yet.
fortnox_update_accountUpdate account
Update account
No parameter schema in public metadata yet.
fortnox_delete_accountDelete account
Delete account
No parameter schema in public metadata yet.
fortnox_list_vouchersList vouchers (journal entries)
List vouchers (journal entries)
No parameter schema in public metadata yet.
fortnox_get_voucherGet voucher details with rows
Get voucher details with rows
No parameter schema in public metadata yet.
fortnox_create_voucherCreate manual voucher
Create manual voucher
No parameter schema in public metadata yet.
fortnox_list_voucher_seriesList available voucher series
List available voucher series
No parameter schema in public metadata yet.
fortnox_account_activityGet activity for a specific account
Get activity for a specific account
No parameter schema in public metadata yet.
fortnox_search_vouchersSearch vouchers by description, account, or amount
Search vouchers by description, account, or amount
No parameter schema in public metadata yet.
fortnox_get_company_infoGet company details
Get company details
No parameter schema in public metadata yet.
fortnox_list_financial_yearsList company financial years
List company financial years
No parameter schema in public metadata yet.
fortnox_invoice_summaryGet invoice statistics by period
Get invoice statistics by period
No parameter schema in public metadata yet.
fortnox_top_customersGet top customers by revenue
Get top customers by revenue
No parameter schema in public metadata yet.
fortnox_unpaid_reportGet detailed unpaid invoice report
Get detailed unpaid invoice report
No parameter schema in public metadata yet.
fortnox_cash_flow_forecastForecast cash flow based on invoices and payables
Forecast cash flow based on invoices and payables
No parameter schema in public metadata yet.
fortnox_order_pipelineAnalyze sales order pipeline
Analyze sales order pipeline
No parameter schema in public metadata yet.
fortnox_sales_funnelAnalyze sales funnel from offers to invoices
Analyze sales funnel from offers to invoices
No parameter schema in public metadata yet.
fortnox_product_performanceAnalyze product/article performance
Analyze product/article performance
No parameter schema in public metadata yet.
fortnox_period_comparisonCompare financial metrics across periods
Compare financial metrics across periods
No parameter schema in public metadata yet.
fortnox_customer_growthAnalyze customer acquisition and growth
Analyze customer acquisition and growth
No parameter schema in public metadata yet.
fortnox_project_profitabilityAnalyze project profitability (if using projects)
Analyze project profitability (if using projects)
No parameter schema in public metadata yet.
fortnox_cost_center_analysisAnalyze costs by cost center
Analyze costs by cost center
No parameter schema in public metadata yet.
fortnox_expense_analysisAnalyze expenses by category
Analyze expenses by category
No parameter schema in public metadata yet.
fortnox_yearly_comparisonCompare year-over-year performance
Compare year-over-year performance
No parameter schema in public metadata yet.
fortnox_gross_margin_trendTrack gross margin trends over time
Track gross margin trends over time
No parameter schema in public metadata yet.
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FORTNOX_CLIENT_ID*secretYour Fortnox app client ID from developer.fortnox.se
FORTNOX_CLIENT_SECRET*secretYour Fortnox app client secret
FORTNOX_REFRESH_TOKEN*secretOAuth2 refresh token obtained from Fortnox authorization flow
Readme
Fortnox MCP Server
An MCP (Model Context Protocol) server for integrating with the Fortnox Swedish accounting system. This server enables LLMs to interact with Fortnox for managing invoices, customers, suppliers, orders, accounts, vouchers, and provides business intelligence analytics.
Two Ways to Use
| Mode | Best For | Setup |
|---|---|---|
| Remote Mode | End users | Just add URL, authorize in browser |
| Local Mode | Developers, self-hosted | Configure environment variables |
Quick Start: Remote Mode (Recommended)
The easiest way to use Fortnox MCP - no credentials needed, just authorize in your browser.
Option A: Add to Claude.ai (Web)
- Go to claude.ai
- Navigate to Settings → Integrations → Add Integration
- Enter the URL:
https://fortnox-mcp.vercel.app/mcp - Wait for it to load, then authorize access by clicking connect
Option B: Add to Claude Desktop
Open your Claude Desktop config file:
- macOS:
~/Library/Application Support/Claude/claude_desktop_config.json - Windows:
%APPDATA%\Claude\claude_desktop_config.json
Add this configuration:
Details
- Repository
- github.com/jakobwennberg/fortnox-mcp
- Category
- Finance & Commerce
- Package
fortnox-mcp-server- Transport
- STDIO
- Auth
- Required
- Registry
- MCP registry, active
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