Integration · ChatGPT

HARNESS + CHATGPT.
ASK IN THE CHAT. APPROVE IN ONE TAP.

You already use ChatGPT. Harness by Heoka plugs into it as a connector, so you can ask who owes you money, what was last said to them, and what to send next, without copying anything in.

ChatGPT does the talking. Harness holds your apps, your rules and your company memory, and it decides what the AI is allowed to see and do.

What Harness reads from ChatGPT

  • Only what Harness passes to it when you ask: overdue invoices, account notes, recent threads.
  • Your rules, such as who never gets chased and what tone to use, so answers follow them.
  • Nothing from apps you have not connected to Harness.

What Harness does with it

  • Answers to your questions about who owes what and why.
  • Chase drafts, which land in your Harness approval queue, not in a customer's inbox.
  • Notes you ask it to remember, saved to your company brain in Harness rather than in ChatGPT memory.

Always your call

  • Every message to a customer or supplier.
  • Any change to your rules or tone.
  • Anything touching disputes, credits or payment plans.

Blocked, full stop

  • ChatGPT cannot send email through Harness. Sending is a human tap.
  • It cannot edit invoices in Xero.
  • It cannot see apps you have not connected.
  • Remove the connector in ChatGPT settings and access stops.

Questions people ask

How do I connect Harness to ChatGPT?

Add Harness by Heoka as a connector in ChatGPT using the address https://mcp.heoka.co.uk/mcp, then sign in to Harness to approve the link. From then on you can ask about invoices and customers in any chat.

Can ChatGPT send emails to my customers through Harness?

No. ChatGPT can prepare a draft, and the draft goes into your approval queue. A person taps send. That rule does not change with the AI you use.

Does my business data stay in ChatGPT?

Your facts, rules and approval log live in Harness, not in ChatGPT memory. If you move to Claude, you connect Claude to Harness and the memory is still there.

Do I need a paid ChatGPT plan?

Connectors depend on the ChatGPT plan and settings OpenAI offers at the time. If your plan does not support them, Harness also works through Claude or its own approval queue.

Keep ChatGPT. Give it your business.

Connect your apps to Harness, add the connector to ChatGPT, and ask your first question tonight. Seven days free.

Start freeSee how it works