md2sign for ChatGPT

com.md2sign/md2sign

Send markdown contracts for legally binding e-signatures. Draft, preview, send and track signing.

client:ChatGPT transport:streamable-http

Install md2sign in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://md2sign.com/mcp/oauth

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