Add a custom MCP action

This step-by-step guide explains how to add a new Custom Action to your AI agent. With Custom Actions, your agent can go beyond answering questions and perform real-world tasks using connected MCP servers.

What is a custom action?

A Custom Action connects your agent to an external system through an MCP (Model Context Protocol) server. This enables the agent to:

Fetch live information (e.g., check order status).
Trigger actions (e.g., create a support ticket).
Integrate with third-party apps and workflows.

👉 Learn more about Custom Actions

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Note:
This is a premium feature.

How to add a custom action

On your CustomGPT.ai dashboard, click the three dots menu.

Click Actions.

On the Actions page, click Add Custom Action.

Enter the name of custom action and MCP server URL.

If an MCP server requires authentication, you can provide an API token (OAuth support will be added soon).

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Note:
You can add up to 3 actions per agent. Learn more about Limits and cost.

👉 Explore publicly available MCP servers here: Awesome Remote MCP Servers

Choose whether to Require end user confirmation before use:

Yes: The agent will check if the action is suitable for a query and ask the user for confirmation before executing it. This happens every time and uses an additional query.