firma.de Rechner für Gründer for ChatGPT
de.firma/rechner
German tools for founders: formation costs, notary and tax adviser fees, taxes, holdings, e-invoices
client:ChatGPT
transport:streamable-http
tools:15
Install firma.de Rechner für Gründer in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://www.firma.de/api/mcp/Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs