Papersign for ChatGPT
com.papersign/papersign
Prepare documents and send them for signature. Papersign is made by Paperform.
client:ChatGPT
transport:streamable-http
Install Papersign in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://api.paperform.app/mcp/papersignCustom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs