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ChatGPT Setup

ChatGPT supports remote MCP servers through Developer Mode. Available for Pro, Plus, Team, Enterprise, and Edu plans.

Setup Steps

  1. Open chatgpt.com and sign in
  2. Go to Settings (gear icon)
  3. Navigate to Connectors > Advanced > Developer Mode and enable it
  4. Go back to Connectors and click Add new connector
  5. Fill in:
  6. Name: FinPlan
  7. MCP Server URL: https://mcp.finplan.prethink.io/mcp
  8. Click Create

Verification

  1. Start a new chat
  2. Click the Connectors button in the message composer
  3. Select FinPlan from the list
  4. Try: Calculate federal income tax for $85,000 filing single in 2025

Things to Know

  • Developer Mode is a beta feature. Memory is disabled while it's active.
  • ChatGPT will ask you to confirm before running any tool that writes or modifies data.
  • You need to enable the FinPlan connector in each new chat session.

References

Priming the agent

Sometimes agents need to be told to use tools. Making sure it knows about them often helps.

user> 'Do you have access to FinPlan tools for financial planning?'
agent> (inspecting) 'Yes, I do'.