io.github.jakobwennberg/fortnox
fortnox-mcp-server
MCP server for Fortnox Swedish accounting API integration
alive probed 2026-10-15
28tools
17ktokens in Claude Opus 5.5
17ktokens in Claude Code
8.3 %of a 200k context window
9.7ko200k_base estimate
761 msto initialize
18 msto list tools
- Run it
- npx -y fortnox-mcp-server@1.0.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- fortnox-mcp-server 1.0.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/jakobwennberg/fortnox-mcp
- Registry
- active, updated 2026-01-25 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| fortnox_create_invoice | 889 | 9 % |
| fortnox_create_voucher | 696 | 7 % |
| fortnox_create_customer | 662 | 7 % |
| fortnox_list_invoices | 657 | 7 % |
| fortnox_create_supplier | 652 | 7 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.jakobwennberg/fortnox)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.