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Set up the Standard Metrics MCP in ChatGPT/Codex

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Prerequisites

  • Plan: Business or Enterprise.
  • Admin setup: A workspace admin or owner must enable developer mode and approve custom apps for the organization.
Each user also needs their own Standard Metrics account to authenticate through OAuth.

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ChatGPT Web

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Enable developer mode

  1. Open Advanced settings in ChatGPT.
  2. Turn on Developer mode.

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Create the app

  1. Open Plugins.
  2. Browse the available plugins and click the plus button to add a plugin.
  3. Enter a name, such as Standard Metrics.
  4. Use the following MCP server URL:
  1. Set Authentication to OAuth.
  2. Save the app and connect it to your ChatGPT account.
  3. Sign in with your Standard Metrics account and complete the authorization flow.

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ChatGPT Desktop

  1. Go to Settings > Plugins > MCPs.
  2. Click Add server.
  3. Enter a name, such as Standard Metrics.
  4. Select Streamable HTTP as the server type.
  5. Enter the following MCP server URL:
  1. Save the server.
  2. Click Authenticate.
  3. Sign in with your Standard Metrics account and complete the authorization flow.

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Codex

Add the Standard Metrics MCP server to Codex from your terminal:
Then authenticate with your Standard Metrics account:
Complete the OAuth flow in your browser. Run codex mcp list from your terminal or /mcp inside Codex to check the connection. This configuration is shared by the Codex CLI and IDE extension.

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Test your connection

Ask ChatGPT or Codex:
List my portfolio companies.
If your client returns data from Standard Metrics, your connection is ready. If it does not, see Troubleshooting.