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Grok Bot is the cloud agent. It is not Grok chat at grok.com, it is not Grok Build, and it does not read connectors you added at grok.com/connectors. Cursor staff document adding a custom server in the Bot chat. PostQueen is not a Grok Bot marketplace plugin. The MCP URL is the same one Grok chat uses. The product and the setup are different.
You need your PostQueen API key first. In app.postqueen.ai, open Settings → API Keys and click Reveal.
Your API key travels inside the connector URL, so the URL itself is a secret. Anyone who has it can post from your accounts. Do not screenshot the Bot chat while the URL is visible. If the key leaks, regenerate it in Settings → API Keys and add the new URL.

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Setup

1

Open Grok Bot

Use Grok Bot, not grok.com and not Cursor IDE mcp.json. The Bot runs on a cloud computer. A server that only listens on localhost will not connect.
2

Ask it to add the MCP server

In the Bot chat, send:
Confirm the URL when the Bot asks. New tools show up from the next message.
3

Confirm

Ask it to list your connected social media accounts. Your channel names come back when it calls integrationList.
Grok Bot reaches PostQueen from the cloud, not from your machine, so the URL has to be reachable over the public internet. api.postqueen.ai is. A self-hosted instance behind a VPN or on your LAN will not connect this way. Cursor IDE mcp.json does not appear in Grok Bot.
Teams inherit Cursor MCP allowlists. If a member sees a server disabled by a team admin, that is Cursor team policy, not a second PostQueen URL.
For Grok on the web, iOS and Android, use the Grok chat connector instead.

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Self-hosted

Swap the host for your NEXT_PUBLIC_BACKEND_URL and keep the /mcp/YOUR_API_KEY tail. Most self-hosted setups serve the backend under /api, so the path sits at /api/mcp. The reverse proxy has to forward /mcp and stream the response: MCP on a self-hosted install. The Bot still needs that URL on the public internet.

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Next steps

Talk to her in Grok Bot

What to ask once the Bot has the server

Grok Build

Terminal agent. grok mcp add, not the Bot chat.

MCP tools

All 14 tools, with every parameter