Sparkel for ChatGPT
io.github.sparkel-io/sparkel
Quantity takeoff from PDF drawings and BIM/IFC: room areas, symbol counts, roof zones.
client:ChatGPT
transport:streamable-http
Install Sparkel in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://mcp.sparkel.ai
Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs