OpenAI ChatGPT App

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

1. Open OpenAI ChatGPT Desktop and go to Settings.

2. Open Plugins and open MCPs.

3. click Add server

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.

6. Confirm that spreadjs-mcp appears in the MCP servers list.

Reference: ChatGPT app MCP setting