ChatGPT

About 2 minutes · MegaMCPs has not checked this client yet

Open chatgpt.com/plugins in a browser and click +.
2
Choose Add custom MCP server (some accounts show Create custom MCP server), name it MegaMCPs and paste this as the Server URL.
```
https://mcp.megamcps.com/mcp
```
Set Authentication to OAuth, tick “I understand and want to continue” and click Create as a plugin.
Install the plugin. MegaMCPs opens: check the app and the account, then click Allow.
Start a new chat, type @, pick MegaMCPs and ask it something that needs a service you connected, for example “What's on my calendar today?”.

Good to know

Custom MCP servers need a paid ChatGPT plan and the web app; workspace admins can turn them off.
ChatGPT asks you to confirm before a tool changes anything.
ChatGPT signs in; it doesn't take API keys.

If it doesn't work

Check the Server URL is exactly https://mcp.megamcps.com/mcp, including /mcp.
Tools missing after you connected another service? Open the plugin's details and click Refresh.

New to MegaMCPs?

Create an account and connect a service first. Onboarding then shows this guide beside a live check that turns green at your client's first tool call.