All playbooks
ChatGPT connector and custom-MCP-connector capabilities are from OpenAI documentation and coverage, mid 2026. The Nucleus to ChatGPT connection is described from that and, until a real session is captured, is not yet presented as tested.
Playbook · the problem
Add Nucleus to ChatGPT

You already use ChatGPT, and your work already lives in Drive. ChatGPT can read it, one source at a time, from inside its own walls.

ChatGPT reaches your files now. Built-in connectors let it read Google Drive, SharePoint, Dropbox and more, and custom MCP connectors let it reach almost anything. That solves reach. What it does not solve: connectors tend to read one source at a time and lean on keyword matching more than meaning, and ChatGPT only looks when you prompt it, so a question that spans your CRM and your docs and your database comes back partial. And every bit of that context is ChatGPT's alone. Your Claude and your Copilot cannot reuse it. The same holds if you put Gemini on the same Drive: native to Workspace, but locked to Google's ecosystem and to Drive alone. Whichever single assistant you pick, you are still reading one silo from inside one vendor's walls.

Every source is a separate connector ChatGPT reads on request. Nothing joins them, nothing checks the answer, and none of it carries over to your other tools.

Built for
Teams who already run on ChatGPT and keep their work in Drive, and want one grounded context across every source, reusable in every AI tool they use.
The problem
You already use ChatGPT, and your work already lives in Drive. ChatGPT can read it, one source at a time, from inside its own walls.
The stance
Keep ChatGPT. Give it one grounded layer, and make that layer work everywhere else too.
Without the layer
ChatGPT
A connector per source
Drive, SharePoint, CRM (each separate, read on prompt)
  • Connectors tend to read one source at a time and lean on keyword matching, so cross-source questions come back partial.
  • ChatGPT reads only when you prompt it. It does not hold a live, grounded memory of your work.
  • The context is ChatGPT's alone. Your Claude and Copilot cannot reuse it.
With Nucleus
ChatGPT
One custom MCP connector to Nucleus
Nucleus joins Drive, CRM, Postgres, and docs into one grounded, weighted context
  • One connector. Nucleus joins every source into a single grounded, weighted context instead of a connector per source.
  • Semantic, not keyword. Nucleus reasons over meaning and returns the answer with its sources.
  • The same layer feeds ChatGPT and Claude and Copilot, so the context is not locked to one tool.
The command
Per prompt · type it in any chat
Answer using my joined context, not one connector at a time, and cite where each part came from.
Set once · settings → custom instructions
Ground every answer in my Nucleus sources and show the source for each claim.
Once it's in your settings, every task starts grounded. You can still say use Nucleus at Attio to point it at a specific source.
Related product:Nucleus Brain Nucleus Context Layer