iFirma MCP Server and API by Cotlet for ChatGPT

dev.cotlet/ifirma

iFirma polish invoicing and accounting MCP server: issue invoice, send invoice, send to KSeF.

client:ChatGPT transport:streamable-http

Install iFirma MCP Server and API by Cotlet in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://cotlet.dev/mcp/v1/ifirma/connect

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