Connect Claude or ChatGPT to Amex UK (2026)

Looking for an Amex MCP server for Claude? You do not need one. Era connects your American Express cards in the UK to Claude, ChatGPT and every other assistant through open banking, so your assistant can see what you spend on the card, when the bill falls due and what your points are worth.

Is there an Amex MCP server for Claude?

American Express does not publish a ready-made MCP connector for cardholders to add to Claude. What you can do is connect your Amex UK cards through open banking, which gives Claude a read-only view of your card transactions and balances. You approve it in the Amex app, and you can withdraw it there at any time.

That route needs no code and no keys. It also means your Amex sits next to your current account, so Claude can answer questions that cross both: how much of your salary goes on the card each month, and whether you clear it in full.

How do I connect Amex to Claude?

Link your Amex card in Era, then add Era to Claude. Era reads your card through open banking, so you approve access in the Amex app and never share your login. Claude then has one connection to everything you have linked, and setup takes a few minutes.

1. Sign up at era.app and choose Connect your bank.
2. Search for American Express and continue to the Amex app.
3. Approve the card accounts you want to share, then return to Era.
4. In Claude, add Era from the connector directory, or use https://context.era.app/mcp as a custom connector.
5. Approve the consent screen and ask a question.

The guide to connecting Claude to your bank account has the full walkthrough.

What your assistant can see in Amex UK

Era brings in your Amex UK cards, with the balance, the statement transactions and the merchants behind each. A card is where a lot of subscriptions and travel spending lives, so it is one of the most useful accounts to give an assistant: it can total your recurring charges, split travel from everyday spending and show how a card bill compares across months.

Rewards are the other thing people ask about. Your assistant can total spending by category to show where your Membership Rewards points come from, and whether the annual fee is earned back by the way you really use the card.

Can ChatGPT read my Amex card?

Yes. ChatGPT reads Amex through the same Era connection as Claude, so linking once covers both. Add Era as a connector in ChatGPT, approve the consent screen, and ask about your card spending, your subscriptions or the statement balance building up through the month.

Connect ChatGPT to your bank account walks through the steps.

Does Amex work with Gemini?

Yes. Gemini can use Era as a connector and read the Amex cards you share. It suits questions such as how your travel spending has changed since last year, or which merchants charge your card on a schedule. You can switch it off in Era whenever you like.

Does Amex work with Perplexity?

Yes. Perplexity can use Era as a connector, so it can pair its research with your Amex figures. You might ask it how card rewards schemes compare, and have it read your real spending by category to see which would suit you.

Does Amex work with Grok?

Yes. Grok reads your Amex cards through Era once you approve the consent screen. Add Era as a connector in Grok, accept the consent screen, and it can answer direct questions about your Amex transactions from what really happened, with no card details shared.

Does Amex work with Meta's Muse?

Yes. Meta's Muse can connect to Era and read the Amex cards you have shared. You approve it on Era's consent screen, you can switch it off whenever you like, and your Amex connection stays in place. Muse sees only what you allow, and never your Amex password.

Does Amex work with Instinct?

Yes. Instinct connects to Era and reads your Amex cards along with the rest, so a question about your subscriptions or your travel spending gets an answer from your real transactions. You approve access in the Amex app, so no assistant ever handles your login.

Questions to ask about your Amex spending

• "What recurring charges are on my Amex card, and what is the total?"
• "How much did I spend on travel this year, and which trip cost the most?"
• "Does my Amex spending match the points I think I earn?"
• "How much of my monthly card bill is dining out?"
• "Which card of mine gets the most use, and is it worth the fee?"

Is it safe to connect Amex UK?

Yes. You approve access in the Amex app and can withdraw it there at any time, and Era never sees your Amex login. Era encrypts your data with AES-256 at rest and TLS 1.3 in transit, never sells it, and no model provider trains on it. Era shows a Reconnect button when Amex asks you to confirm again.

If you would rather not connect, upload an Amex statement and Era fills a manual account from it. Does Claude support open banking in the UK? and can ChatGPT connect to my UK bank account? cover the wider picture, and Barclays covers Barclaycard in the same way.