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Summary
Fortnox — the Swedish SMB accounting standard: customers, invoices, supplier invoices, articles, orders, vouchers and the account chart. REST API v3, OAuth 2.0.
Try asking
Example prompts for Fortnox
Click any prompt to copy it. Paste into Claude, ChatGPT, Cursor, Gemini, Copilot or OpenClaw to run it against this connector.
Claude is AI and can make mistakes. Please double-check responses.
💡 No install? Use cloud.anythingmcp.com directly. Sign in, click Connectors → Fortnox, paste your credentials, mint an MCP API key — done. No Docker, no
git clone, no local server.
Fortnox + Meta Muse
Fortnox — the Swedish SMB accounting standard: customers, invoices, supplier invoices, articles, orders, vouchers and the account chart. REST API v3, OAuth 2.0.
Prerequisites
See the full setup instructions baked into the connector (visible in the in-app store when you select the connector). The required environment variables for this connector are:
FORTNOX_CLIENT_ID, FORTNOX_CLIENT_SECRET, FORTNOX_REFRESH_TOKEN
Step 1 — Get credentials
Getting a token
- Register at the Fortnox Developer Portal and create an integration. You receive a client id and client secret.
- Run the authorization-code flow once for the customer's Fortnox account, asking for the scopes you need —
invoice,customer,article,order,supplierinvoice,bookkeeping,settings. Keep the refresh token. - Set
FORTNOX_CLIENT_ID,FORTNOX_CLIENT_SECRETandFORTNOX_REFRESH_TOKEN. AnythingMCP refreshes the access token on its own.
…(continued in the in-app connector instructions)
Step 2 — Install the adapter
curl -fsSL https://raw.githubusercontent.com/HelpCode-ai/anythingmcp/main/docker-compose.quickstart.yml -o docker-compose.yml
printf 'JWT_SECRET=%s\nENCRYPTION_KEY=%s\n' "$(openssl rand -hex 32)" "$(openssl rand -hex 32)" > .env
docker compose up -d
Step 3 — Add the connector in Muse
Your server URL: in AnythingMCP, open MCP Servers → the server this connector is on, and copy its URL (
https://cloud.anythingmcp.com/mcp/…). Use it wherever this guide showsYOUR_SERVER_ID.
Muse adds remote MCP servers as custom connectors and signs in to them with OAuth.
- In Muse, open Settings → Connectors and choose Add custom connector.
- Paste the MCP server URL
https://cloud.anythingmcp.com/mcp/YOUR_SERVER_ID. - Muse opens the AnythingMCP sign-in page: sign in and approve access.
- In a chat, ask Muse for something that needs the
Fortnoxtools.
You can also set it up from a chat, on the web, in the iOS and Android apps or in WhatsApp. Send Muse this message:
Create a Custom Connector for a new remote MCP server, then connect to it:
Name: AnythingMCP
Transport: remote streamable HTTP
URL: https://cloud.anythingmcp.com/mcp/YOUR_SERVER_ID
Auth: OAuth
Self-hosting? Use your instance's public HTTPS address instead of https://cloud.anythingmcp.com. Muse connects from Meta's cloud, so localhost does not work.
Available tools
| Tool | What it does |
|---|---|
fortnox_get_company_settings | Read the connected company's settings: name, organisation number, VAT number, address and currency |
fortnox_list_customers | List customers with their number, name, organisation number, address and payment terms |
fortnox_get_customer | Read one customer by their customer number, with addresses, delivery defaults, VAT settings and price list |
fortnox_list_invoices | List invoices with their number, date, due date, customer, total and balance |
fortnox_get_invoice | Read one invoice in full: every row with article, quantity, price and VAT, the totals, the payment terms and the balance outstanding |
fortnox_list_supplier_invoices | List supplier invoices with their supplier, date, due date, total and payment state — the payables side of the ledger |
fortnox_list_orders | List sales orders with their number, customer, date, delivery state and total, for the pipeline between quote and invoice |
fortnox_list_articles | List articles with their number, description, sales price, purchase price, stock quantity and unit |
fortnox_list_vouchers | List bookkeeping vouchers in a financial year with their series, number, date and description — the ledger underneath the documents |
fortnox_list_accounts | List the chart of accounts for a financial year with each account's number, description, VAT code and balance-carry setting |
FAQ
Where is Muse available? Meta currently offers Muse in the US and Canada, on the web, in the iOS and Android apps and in WhatsApp.
Does Meta review this connector? No. Meta doesn't review custom connectors. Muse sees only the tools you switched on for this MCP server in AnythingMCP, and you can disconnect it anytime under Settings → Connectors.
Next steps
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