Postproxy for ChatGPT

dev.postproxy/postproxy

Publish, schedule, and manage social media posts across major platforms via the Postproxy API.

client:ChatGPT transport:streamable-http

Install Postproxy in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.postproxy.dev/mcp

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