Essentially all of Fortnox is available. Claude can search customers, suppliers and invoices, see what's paid and unpaid, create customer invoices, post entries, approve supplier invoices for payment, and export bookkeeping data as SIE files. You approve every write in the app before it is sent. See the full module table, 22 Fortnox modules with exactly what you can do in each.

No. Claude proposes changes and your Claude app asks for your approval before writes are sent to Fortnox.

Yes. You sign in with Fortnox OAuth and Sidcom never stores your password. Claude only acts within your existing Fortnox permissions, and all changes are made through your own Fortnox user and show up in Fortnox.

Claude Desktop, Claude Code and the Claude mobile apps.

A license is a user seat in one Fortnox company. If you use Claude across several Fortnox companies you need a license per company. If those companies already have a Fortnox integration license, Fortnox AI Connector: Multi-Company is cheaper from around three companies, with one license covering unlimited companies. Without one, each company needs its own and that cost is on top, so do the math first. Fortnox checks your license and permissions each time you connect.

99 SEK per user per month via the Fortnox marketplace. No setup fees and no per-call charges. 30-day money-back guarantee.

Quick checklist: have you bought the license in the Fortnox marketplace and activated it via the activation link? No separate integration license is needed, this connector is bought from Fortnox. Otherwise test with only the "Company information" scope to rule out a license issue with one of Fortnox's other modules.