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Fortnox is a Swedish cloud platform for accounting, invoicing, and business administration. The Fortnox connector lets your Lovable app work with the data in your Fortnox company, including customers, invoices, orders, suppliers, articles, and bookkeeping. It’s designed for finance dashboards, invoicing workflows, and internal operations tools built on Fortnox data. Fortnox is available as an app + chat connector: one shared connection that works in the chat while you build and in your published apps. With Fortnox, your app can:
  • Read and manage customers and suppliers
  • Create, update, and read customer invoices and supplier invoices
  • Read and manage orders, offers, and articles
  • Read and record payments
  • Read company information, settings, currencies, and cost centers
  • Read and manage projects and time reporting
A connection reaches the single Fortnox company you authorize. It’s a good fit for receivables dashboards, supplier overviews, invoicing portals, and reporting apps that need live accounting data.

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Common use cases and example apps

These examples show what you can build with Fortnox, each with a prompt to start from.

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How to connect Fortnox

Who can create Fortnox connections depends on your plan and workspace settings. App + chat connectors are available by default on Free, Pro, and Business plans. On Enterprise plans, they are effectively disabled at first: Who can create connections and clients defaults to No one until an admin changes it in Connectors → Admin settings → App + chat connectors. You can create multiple Fortnox connections by authorizing different Fortnox companies, which is useful for separating environments or working with several businesses. When the connection is created, you can link it to the projects where you want to use it. Anyone building in a project can ask Lovable in chat to link their project to it.

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Prerequisites

Before connecting Fortnox, make sure you have:
All API requests made through this connector count toward the API limits of the connected Fortnox company. Billing and quota are handled directly by Fortnox, not Lovable.

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Set up your Fortnox connection

You authorize Lovable with your Fortnox account, and no API key is needed.
1

Open Fortnox in Connectors

Open Connectors and select Fortnox. For the other places to open the catalog from, see Where to find connectors.
2

Add a connection

Click Add connection.
3

Name the connection

In Display name, name the connection (for example, Fortnox Prod). This name is only used inside Lovable to identify the connection.
4

Review scopes (optional)

Under Scopes, review the permissions your app requests. Company information is always included. Customers, Invoices, Orders, Bookkeeping, Suppliers, Articles, and Projects are selected by default. Select only the scopes your app needs.Fortnox lists these permissions under its own names on its authorization screen, in the language of your Fortnox account. The In Fortnox (Swedish) column lets you check the two lists against each other before approving.
The Salary scope grants access to employee and payroll data, including attendance and expenses. Leave it off unless your app needs it.
For full scope documentation, see Fortnox’s scope reference.
5

Choose who can use this connection

Under Who can use this connection, decide who in your workspace can use the connection. You start as the only person with access:
  • Only you (default): leave the access list as is; only you can use the connection and its associated data.
  • Invite specific people: add workspace members by email; only you and the people you add can use the connection and its associated data.
  • Invite entire workspace: click Invite entire workspace to make the connection available to everyone in your Lovable workspace.
See Who can use connections and clients for more information.
6

Connect to Fortnox and authorize

Click Connect. The Fortnox authorization window opens, so make sure your browser doesn’t block pop-ups. If it does, Lovable redirects you instead.Sign in to Fortnox if prompted, choose the company you want to grant access to, review the requested permissions, and approve.You’ll be redirected back to Lovable with a confirmation.
When connected, anyone building in a project can ask Lovable in chat to link their project to Fortnox (based on configured connection-level access). Your Lovable apps can then work with Fortnox customers, invoices, orders, suppliers, articles, and bookkeeping data.

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Limitations

The Fortnox connector cannot:
  • Receive Fortnox webhooks or event notifications.
  • Support per-end-user Fortnox login. Each connection represents a single Fortnox company shared across all projects linked to it.
If Fortnox access is revoked from the Fortnox side, reconnect the connection in Lovable before API calls can succeed again.

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Troubleshooting

If a Fortnox request fails, the most common cause is a missing permission on the connection.
This means the connection lacks the permission for the resource your app requested. Fortnox reports it as a bad request (HTTP 400, error code 2000663), but the cause is a missing permission, not a problem with the request itself. Fortnox’s error reference gives the English meaning as “No access to the current scope”.To fix it, open the connection, click Edit next to Scopes, select the missing scope, then click Reconnect and approve in Fortnox. Retrying without changing the scopes returns the same error.

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Manage your connection

Connections are managed from Connectors: select , then open the connection.
  • Unlink projects to remove access from specific projects while keeping the connection available for others. See Unlink projects from a connection for the steps.
  • Delete the connection to remove it from the workspace entirely. Deleting is permanent. It removes the credentials from all linked projects, and app features that use stop working until a new connection is added. See Delete a connection for the steps and who can delete.