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ChatGPT: Custom MCP Server ​

For normal setup, install the published Mnemoverse Memory plugin. This page is for people deliberately creating their own MCP connection.

Who can add the server ​

Custom-server creation depends on the ChatGPT account and workspace permissions. These are separate from installing a published plugin. Check the controls offered in your account and OpenAI's custom MCP server guide and help article.

Historical evidence, checked 21 October 2026: OpenAI's help article described Business workspace creation as admin/owner-only, Enterprise/Edu creation as permission-controlled, and Pro connections as read/fetch. Its developer guide described read and write tools without specifying plans. Neither source named Plus, Free or Go. The help article described custom-server setup as web-only and said Developer Mode was no longer required. These observations are not a current availability guarantee and do not apply to the published plugin's installation.

Add Mnemoverse as an app ​

The manual flow documented on 21 October 2026 was:

  1. Open ChatGPT Plugins, select +, then Add custom MCP server. If your account does not offer this, use the published plugin rather than creating a different setup by guesswork.

  2. Name the server Mnemoverse. Under Connection, enter:

    text
    https://mcp.mnemoverse.com/mcp

  3. Choose OAuth authentication. Select Create as a plugin when offered, complete Mnemoverse browser sign-in and review the requested access. Do not paste an API key into the conversation.

  4. Review the discovered tools and install the custom plugin. In a workspace's older form, Scan Tools may start the sign-in before creation. See tool availability for the tools Mnemoverse offers to ChatGPT.

  5. Start a new conversation, select the plugin, and call memory_stats. Test a user-requested write and read-back before relying on saving.

Sign-in and consent are required for authenticated memory calls. A tool list is not proof that those calls work. If the consent grants only read access, the connection cannot save memories; reconnect with the requested write access only if you want that capability.

Updating an existing custom connection ​

Use the refresh/scan-tools control offered by the connection's settings. Workspace admins may need to manage a workspace-published connection. After refreshing, start a new conversation and verify the tools you intend to use. This is maintenance of a custom connection, not a requirement to install Mnemoverse from the public directory.

Verification record ​

An existing Mnemoverse connector on ChatGPT Pro passed memory_stats, a write and a read on 27 September 2026. That check did not cover creating the connection or fresh sign-in, and does not establish today's plan eligibility. The published plugin has a separate verification record.