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ChatGPT supports remote MCP servers through Developer Mode, which you switch on once in its settings. After that, setup is a short form and a sign-in.
1

Enable Developer Mode

Open ChatGPT → Settings → Apps → Advanced settings and turn on Developer Mode.
2

Create the app

Click Create app.
3

Fill in the details

  • Name: OpenFinance
  • MCP Server URL: https://api.openfinance.tech/agent/mcp
  • Authentication: OAuth. Leave OAuth Client ID and OAuth Client Secret blank, then click Create.
4

Sign in and approve

When ChatGPT first uses the server you are sent to OpenFinance. Sign in and click Authorize on the consent page.
5

Add it to a chat

Type /openfinance in the chat input and press Enter to add OpenFinance to the current chat.
Custom MCP connectors require a ChatGPT Plus, Pro, Business, or Enterprise plan.