# Can a ChatGPT dot use an MCP server? OpenAI documents custom MCP servers for ChatGPT web, available to Business and Enterprise/Edu customers, with Pro users limited to read/fetch permissions ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). Dots [connect apps through plugins](https://www.knowman.io/guides/chatgpt-dots-knowledge-base), whose permissions are shared across dots, ChatGPT, ChatGPT Work, and Codex ([OpenAI Help](https://help.openai.com/en/articles/20001529-dots-privacy-security-and-safety-faqs)). ChatGPT connects to remote MCP servers only ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). [KnowMan's MCP server](https://www.knowman.io/guides/mcp-server-knowledge-base) runs locally with `npx -y @knowman/mcp` and is also hosted at `https://api.knowman.io/mcp`, so the hosted endpoint can be added to ChatGPT. ## What a ChatGPT dot is A dot is an always-on agent in ChatGPT that can help you take a project from an idea to work you can use, as [OpenAI describes](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot). Dots are rolling out to Pro users aged 18 and older in markets excluding the European Economic Area, Switzerland, and the UK, and are generally available to eligible ChatGPT Enterprise, Edu, and Healthcare workspaces ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). You create a dot in the ChatGPT mobile app on iOS or Android, the desktop app, or on desktop web ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). ## How a dot learns and connects apps You teach a dot by describing what you want it to do and sharing the details it needs ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). To attach a file or photo, select + in the conversation ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). To review or connect an app on mobile, open your dot's profile and go to Customize > Plugins, select a supported app, and review its permissions before connecting it ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). Plugin permissions are shared across dots, ChatGPT, ChatGPT Work, and Codex, so a dot can use your existing connections within the permissions you have granted ([OpenAI Help](https://help.openai.com/en/articles/20001529-dots-privacy-security-and-safety-faqs)). You connect and manage plugins in ChatGPT's Plugins tab ([OpenAI Help](https://help.openai.com/en/articles/20001529-dots-privacy-security-and-safety-faqs)). ## How dot memories work A dot receives memories and recent conversation context from ChatGPT, and conversations with your dot can contribute to memory in ChatGPT ([OpenAI Help](https://help.openai.com/en/articles/20001529-dots-privacy-security-and-safety-faqs)). A dot also [creates its own memories](https://www.knowman.io/guides/ai-agent-memory), including from connected apps, and can review information from those apps proactively, even when you have not asked a specific question about it ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). You cannot view, delete, or directly modify individual dot memories, including details that entered the dot's context from plugins ([OpenAI Help](https://help.openai.com/en/articles/20001529-dots-privacy-security-and-safety-faqs)). To delete a dot's own saved memories, you need to delete your dot ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). ## Custom MCP servers in ChatGPT Custom MCP server connections and full MCP support are available for ChatGPT Business and Enterprise/Edu customers on ChatGPT web ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). To add one, select the plus button, then select Add custom MCP server ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). Pro users can connect [custom MCP servers](https://www.knowman.io/guides/what-is-an-mcp-server) with read/fetch permissions ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). After an admin first approves an MCP server connection for the workspace, ChatGPT uses a frozen snapshot of its available tools and inputs ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). You can put server-wide guidance, such as required tool sequences or relationships between tools, in the MCP instructions field, keeping the first 512 characters self-contained ([OpenAI developers](https://developers.openai.com/api/docs/guides/custom-mcp-server)). ## What Secure MCP Tunnel is for Secure MCP Tunnel is the path OpenAI names for MCP servers that are not remote, such as a server running on a developer machine ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). KnowMan's documented client setups, [listed in the MCP server guide](https://www.knowman.io/guides/mcp-server-knowledge-base), run the server locally over stdio in [Claude Desktop](https://www.knowman.io/integrations/claude-desktop), Claude Code, and Cursor. KnowMan also provides a hosted server at `https://api.knowman.io/mcp` for clients that connect to remote MCP servers. ## Limits to expect from a dot A dot has its own cloud computer, and access to your local computer is optional and starts turned off ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). When you connect a computer and confirm Allow access, your dot can access files and work on that computer from any of its messaging channels ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). A dot can make mistakes, including when following your rules, so review its work and check important details before relying on the result ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). Each task has its own conversation and does not automatically receive every conversation you have had with your dot ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). ## A knowledge base your agents can read [KnowMan](https://www.knowman.io/guides/personal-knowledge-base) saves articles and links, reads and tags them, [answers questions](https://www.knowman.io/guides/ai-knowledge-base) with citations, and keeps memories as claims, decisions, and playbooks. Dot memories cannot be viewed, deleted, or modified one by one ([OpenAI Help](https://help.openai.com/en/articles/20001529-dots-privacy-security-and-safety-faqs)). In KnowMan, memories are [claims, decisions, and playbooks](https://www.knowman.io/guides/persistent-memory-for-ai-agents). If you want an agent to search your saved items and memories, the KnowMan MCP server is documented for Claude Desktop, [Claude Code](https://www.knowman.io/integrations/claude-code), and Cursor in [the MCP server guide](https://www.knowman.io/guides/mcp-server-knowledge-base). See also [persistent memory for AI agents](https://www.knowman.io/guides/persistent-memory-for-ai-agents). ## Use the hosted KnowMan server [KnowMan's MCP server](https://www.knowman.io/guides/mcp-server-knowledge-base) runs locally with `npx -y @knowman/mcp`, but ChatGPT connects to remote MCP servers. For ChatGPT, use the hosted KnowMan server at `https://api.knowman.io/mcp`. Sign in with OAuth by adding the server URL and approving access on the KnowMan consent page, or send an API key as an `Authorization: Bearer ` header. The hosted server exposes KnowMan tools for searching, reading, asking, and saving links. Create a KnowMan account at [app.knowman.io](https://app.knowman.io), then ask the assistant to search or save, for example `search my KnowMan for ...` or `save this URL`. The open-source client is available at [github.com/Essatt/knowman-mcp](https://github.com/Essatt/knowman-mcp). ## Questions ### Can I connect the KnowMan MCP server to ChatGPT? Yes. ChatGPT connects to remote MCP servers, and OpenAI says a server on a private network, on-premises, or on a developer machine must use Secure MCP Tunnel ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). [KnowMan's MCP server](https://www.knowman.io/guides/mcp-server-knowledge-base) runs locally with `npx -y @knowman/mcp` and is also hosted at `https://api.knowman.io/mcp`, so add the hosted endpoint to ChatGPT instead of the local server. ### Can dots use MCP servers? OpenAI documents plugins for dots, whose permissions are shared across dots, ChatGPT, ChatGPT Work, and Codex ([OpenAI Help](https://help.openai.com/en/articles/20001529-dots-privacy-security-and-safety-faqs)). Its docs also cover custom MCP servers in ChatGPT generally ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). No OpenAI statement says dots themselves connect custom MCP servers. ### Who can add custom MCP servers in ChatGPT? Custom MCP server connections and full MCP support are available for ChatGPT Business and Enterprise/Edu customers on ChatGPT web ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). Pro users can connect custom MCP servers with read/fetch permissions ([OpenAI Help](https://help.openai.com/en/articles/12584461-connecting-custom-mcp-servers-in-chatgpt)). ### Can I delete a single dot memory? No. You currently cannot view, delete, or directly modify [individual dot memories](https://www.knowman.io/guides/chatgpt-dots-memory), including details that entered the dot's context from plugins ([OpenAI Help](https://help.openai.com/en/articles/20001529-dots-privacy-security-and-safety-faqs)). To delete your dot's own saved memories, you need to delete your dot ([OpenAI Help](https://help.openai.com/en/articles/20001530-getting-started-with-your-dot)). ## Related guides - [Connect your knowledge base through KnowMan's MCP server](https://www.knowman.io/guides/mcp-server-knowledge-base) - [What Is a Knowledge Base for AI Agents?](https://www.knowman.io/guides/knowledge-base-for-ai-agents) - [Persistent Memory for AI Agents](https://www.knowman.io/guides/persistent-memory-for-ai-agents) - [How to Give ChatGPT Memory](https://www.knowman.io/guides/how-to-give-chatgpt-memory) - [How to Give Your AI Context from What You Read](https://www.knowman.io/guides/give-your-ai-context) ## More in this topic - [How to teach Claude Code your knowledge](https://www.knowman.io/guides/teach-claude-code-your-knowledge) - [How to teach Augment Code your knowledge](https://www.knowman.io/guides/teach-augment-your-knowledge) - [How to teach Claude Duet your knowledge](https://www.knowman.io/guides/teach-claude-duet-your-knowledge) ## More for Chatgpt Dots - [How to give ChatGPT Dots better memory](https://www.knowman.io/guides/chatgpt-dots-memory) - [ChatGPT Dots and your knowledge base](https://www.knowman.io/guides/chatgpt-dots-knowledge-base) ## Keep a library your AI can cite KnowMan [reads what you save and answers with citations](/guides/personal-knowledge-base). Try Pro for 14 days with no credit card. [Create your account](https://app.knowman.io/signup) [Start free](https://app.knowman.io/signup) Every new account starts with 14 days of Pro. No credit card. Source: https://www.knowman.io/guides/teach-chatgpt-dots-your-knowledge