Postmately for ChatGPT

com.postmately/postmately

Make carousels and short videos, schedule and publish social posts, read post metrics.

client:ChatGPT transport:streamable-http

Install Postmately in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.postmately.com/mcp

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