PostNimbo for ChatGPT
com.postnimbo/postnimbo
Schedule social posts to 30+ networks, answer the inbox and run chat automations.
client:ChatGPT
transport:streamable-http
Install PostNimbo in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://postnimbo.com/api/mcp-oauth-dynamic
Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs