LinkupAPI for ChatGPT

com.linkupapi/linkupapi

Run LinkedIn, email, WhatsApp and iMessage outreach from any MCP client.

client:ChatGPT transport:streamable-http tools:2

Install LinkupAPI in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.linkupapi.com/mcp

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