Add in ChatGPT

A personal plugin in ChatGPT.

Turn on developer mode, create the plugin, paste the MCP address and connect. When ChatGPT asks to Connect, sign in to your account and at Fortnox.

Turn on developer mode

In ChatGPT on the web: Settings, Security and login, turn on Developer mode. It is available for Plus, Pro, Business, Enterprise and Education, not Free.

Create a personal plugin

Open Plugins and choose plus. On some accounts this sits under Work. Name the plugin, for example Fortnox.

Paste the MCP address

Paste the MCP address when ChatGPT asks for the server address. It ends with /mcp.

When ChatGPT needs company data, choose Connect. Log in to your Cashlight Connectors account first, or create one, and subscribe if needed. Then sign in at Fortnox and pick a company. Try for example: Which customer invoices are due this week?

MCP address to paste

Paste this when ChatGPT asks for the plugin server address.

https://staging.fortnox.cashlightapp.com/mcp

If something goes wrong

Did you cancel at Fortnox?

Go back to ChatGPT and choose Connect again.

Wrong company?

Disconnect in Fortnox. Then go back to ChatGPT and connect again.

ChatGPT cannot find the connection?

Check that the plugin uses the MCP address. You can cancel before any data is fetched.