TLBX – a toolbox

We build the tools we need in our own work, and publish them so others can use them too. That makes them opinionated: each one does what we need, the way we think it should be done, and is built for real use rather than for demos.

Tools for Claude and other MCP clients

• VATEU VAT lookupLets Claude check EU VAT numbers in VIES, the European Commission's VAT Information Exchange System: whether a number is valid for intra-EU trade and, where the member state shares them, the registered name and address. No account needed.vat.tlbx.se →
• FNXLimited betaMCP for FortnoxConnect your Fortnox companies and let Claude work with customers, invoices, supplier invoices and vouchers. Connections are personal: only you can use the companies you connect. In limited beta right now: access is by invitation only.fnx.tlbx.se →