Thelawin – Generate EU e-invoices from JSON

Show HN: Thelawin – Generate EU e-invoices from JSON

Thelawin – Generate EU e-invoices from JSON operates in show hn launch.

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Hi HN,I built Thelawin because EU e-invoicing is one of those boring problems that gets surprisingly deep once you ship it.The basic idea is simple: send invoice JSON, get an EU e-invoice back.It currently supports ZUGFeRD, Factur-X, XRechnung, UBL, CII, Peppol, FatturaPA and plain PDF output. For PDF-based formats it returns PDF/A-3 with embedded XML. There is also a validation endpoint, so you can check the JSON before generating the invoice.The API is stateless by design. Invoice data is processed, returned, and not stored. Usage logs do not contain invoice contents.I also added an MCP endpoint. The goal is that an agent can pass sender, buyer and invoice-line data to a schema-bound tool

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Website: thelawin.dev