Formstep for ChatGPT

io.github.formstep/formstep-mcp

The form builder that ends the back-and-forth

client:ChatGPT transport:streamable-http

Install Formstep in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.formstep.io/api/mcp

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