mcp server erechnung for ChatGPT

io.github.flame-goal-hunter/mcp-server-erechnung

German B2B E-Rechnung MCP server: EN 16931, KoSIT XRechnung 3.0 & DATEV ZUGFeRD 2.5 PDF/A-3b.

client:ChatGPT transport:streamable-http runtime:npm

Install mcp server erechnung in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://german-e-rechnung-zugferd-and-xrechnung.p.rapidapi.com/api/v1/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs