# OpenAI ChatGPT App

## Content

> **Version note**
> 
> As of **July 9, 2026**, the Codex app has been integrated into the ChatGPT app.
> This document applies to the new ChatGPT app after the integration.
> If you are using the legacy Codex app, see [OpenAI Codex App](https://developer.mescius.com/mcp/docs/configure-your-ai-client/desktop-and-chat-clients/openai-codex-app)

1\. Open OpenAI ChatGPT Desktop and go to `Settings`.
2\. Open `Plugins` and open `MCPs`.
3\. click `Add server`
![image](https://cdn.mescius.io/document-site-files/images/8258313f-94ec-48f2-929c-4f1bd0c4cac5/image-20260714.b1f234.png?width=800)
4\. Enter the MCP server settings:

* Name: `spreadjs-mcp`
* Type: `Streamable HTTP`
* Endpoint: `https://developer.mescius.com/mcp/spreadjs`
* Header name: `Authorization`
* Header value: `Bearer <YOUR_MCP_TOKEN>`

5\. Click `Save`.
![image](https://cdn.mescius.io/document-site-files/images/8258313f-94ec-48f2-929c-4f1bd0c4cac5/image-20260714.51a52c.png?width=800)
6\. Confirm that `spreadjs-mcp` appears in the MCP servers list.
![image](https://cdn.mescius.io/document-site-files/images/8258313f-94ec-48f2-929c-4f1bd0c4cac5/image-20260714.c83666.png?width=800)
Reference: [ChatGPT app MCP setting](https://learn.chatgpt.com/docs/reference/settings#integrations--mcp)