Skills are free add-ons that teach Claude or ChatGPT one specific task. These four write invoices, build SEPA payment files, check supplier invoices against delivery notes, and keep your books. Each one asks for what's missing. None of them sends an invoice or transfers money.
Describe the job and the amounts. You get an invoice in one of 12 Billpal templates, your own Word or Excel file, or, without a template, a PDF the skill lays out itself. If you need one, also as a ZUGFeRD e-invoice.
Claude, ChatGPT
All EU countries
List the transfers you need. You get one SEPA XML file (pain.001) for your bank's bulk upload, checked against the ISO schema.
Claude, ChatGPT
Euro payments in SEPA
Hand over invoices, delivery notes, timesheets, and orders. You get a list of what was billed but not delivered, prices that differ, and invoices billed twice.
Claude, ChatGPT
Any country
Hand over bank statements, invoices, and receipts. You get books with VAT, open invoices, and depreciation, checked by a script. Once every check passes, they're ready for your accountant.
Claude, ChatGPT
Austria, Germany, US, or your own chart
A skill is a folder of instructions and scripts. The assistant follows the instructions. Where a file or a sum has to be exact, a script does the work, so numbers are calculated, not guessed.
Download the ZIP. In Claude, upload it under Settings > Capabilities > Skills. In ChatGPT, drop it into the chat.
Say who you're billing or which transfers you need, or attach the invoices, delivery notes, or bank statements. If something is missing, such as a VAT ID or an IBAN, the skill asks for it.
You see the invoice, every transfer, every difference, or every booking before you use it. The SEPA file and the bookings are written only after you confirm.
Billpal collects and sorts the invoices you receive. The skills help with the work before and after that: writing your own invoices, checking supplier invoices against what was delivered, building the SEPA file for the transfers you approve in your bank, and keeping the books. They cost nothing and work without an account.
Connect Billpal to Claude or ChatGPT and the skills read from your account. You confirm every value before it goes into a file.
A folder with instructions and, for the parts that have to be exact, scripts. Claude and ChatGPT read the instructions and follow them step by step. The Billpal skills are free and MIT-licensed, and the source is on GitHub.
No. Each skill works on its own. With a connected account, the skills fill in contacts, invoice numbers, and supplier IBANs, find supplier invoices to check, and read invoices and receipts for your books, from your Billpal data.
Code execution. In Claude, turn it on in the settings and upload the ZIP as a skill. In ChatGPT, drop the ZIP into the chat. A link alone isn't enough, because ChatGPT can't download the files.
No. The invoice skill doesn't send the invoice, and the SEPA skill doesn't move money. You upload the SEPA file to your bank and approve the transfers there. The delivery note match only reports. It doesn't hold or reject an invoice. The bookkeeping skill doesn't file VAT or tax returns.
The invoice skill and its e-invoice step cover sellers in every EU country. They follow the EU VAT Directive and national rules, such as § 11 UStG in Austria or § 14 UStG in Germany. Outside the EU, you get the invoice with what you say your country requires. The SEPA skill builds euro transfers for business banks that import SEPA XML. The delivery note match works in any country. The bookkeeping skill has charts of accounts and rules for Austria, Germany, and the US, and works elsewhere with your own chart.
