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ChatGPT supports custom MCP apps on supported plans and workspace configurations. Admin controls and Developer Mode availability vary, so confirm that your workspace allows custom apps before starting.

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Connect through MCP

  1. Ask your ChatGPT workspace administrator to enable custom apps or Developer Mode if required for your plan.
  2. Open Settings, then Apps. Choose Create. Workspace administrators may instead start from Workspace settings → Apps.
  3. Create an app named Palette with this MCP endpoint: https://api.palette.team/mcp.
  4. Complete the tool scan and OAuth sign-in when ChatGPT prompts you.
  5. Publish or enable the app according to your workspace’s controls.
  6. In a chat, enable Palette and ask ChatGPT to search or read the Palette OS material available to you.
When connected, ChatGPT uses Palette tools on demand. It only receives material allowed by the signed-in person’s Palette permissions. See OpenAI’s custom MCP app guide for current plan availability, admin controls, and UI details.

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Project snapshot fallback

If your plan or workspace does not allow custom apps, use a manual Project snapshot:
  1. In Palette, export the permitted Context Library pages you need as Markdown. The exact export flow can vary during early access.
  2. In ChatGPT, create or open a Project, such as “Work” or your company name.
  3. Add the Markdown file to the Project.
  4. Add Project instructions such as:
You have access to a Context Library snapshot from Palette covering our organization, teams, and ways of working. Refer to it when answering questions about our company, team structure, priorities, or colleagues. Treat its export date as the freshness boundary.
The Project file is a snapshot, not an MCP connection. Re-export and upload it again after the Context Library changes. New to Palette? Start with the Quick Start guide.