Use Claude and ChatGPT with the same UK accounts
Use Claude and ChatGPT with the same UK accounts: link Monzo, Starling, Barclays and more to one Era hub, and both assistants share one memory of your money.
Plenty of people in Britain now ask Claude about their money in the morning and ChatGPT in the evening, and both begin from nothing each time. Era gives them a shared starting point: your UK accounts, linked once through open banking, and a single memory of what you've told any of them. What one learns, the other already knows.
This guide covers connecting two assistants to one set of accounts, what they share, and how to bring in a third.
Can I use Claude and ChatGPT with the same UK accounts?
Yes. Link your banks and cards in Era once, then connect Claude and ChatGPT to Era separately. Both read the same balances and transactions, and both read and write the same memory: your goals, preferences, categories and rules. Tell one something and the other knows it, without you repeating yourself or pasting statements into either.
The reason it works is that your data lives in Era, not in either assistant, and each assistant is a window onto it. A category you correct in a Claude chat is corrected for ChatGPT too, because there is only one ledger. Era connects accounts across the US, the UK, Canada, France, Germany, Spain, and 40+ countries in all.
Which UK banks can I use?
You can use the high street names and the app banks: Barclays, HSBC, Lloyds, NatWest, Nationwide, Santander, Monzo, Starling and Revolut among them. Your bank connects through open banking, so you approve access in your own banking app, never by typing your bank password into an assistant, and you can withdraw that approval whenever you like.
If a provider isn't on the list, import a statement from it into a manual account and both assistants work from that history. The connection to your bank belongs to Era, which means adding a second assistant doesn't mean a second bank approval.
How do I connect both assistants?
Link your accounts in Era, add Era to Claude, then add Era to ChatGPT. Each assistant asks you to approve the connection separately, so you can allow, pause or remove one without touching the other. The first connection takes about ten minutes and the second is quicker.
- Link your accounts in Era. Sign up at era.app; the Basic tier is free. Connecting a bank uses a live data connection, a paid feature, and on Basic you can add manual accounts instead.
- Connect Claude. Connecting Claude to your bank account walks through it.
- Connect ChatGPT. How to connect ChatGPT to your finances does the same.
- Tell one of them something. In Claude, say: "Remember that I'm saving £250 a month towards a house deposit and want to keep takeaways under £80."
- Ask the other. In ChatGPT, ask: "How am I doing against my takeaway budget this month?" It answers from the goal Claude saved and the transactions Era holds.
Saving to memory changes your Era account, so the assistant needs write access for it. Reading works everywhere.
What do the assistants share?
They share your accounts and transactions, the memory Era keeps about you, the categories, tags and rules that tidy your ledger, and the documents in your Document Library. Whichever assistant you open sees the same version of each, so nothing needs explaining twice.
- Accounts and transactions. Balances, spending, direct debits and standing orders, recurring charges and cash flow, across every account you've linked.
- Memory. Goals, preferences, household facts and anything you've asked an assistant to remember. Ask any of them to forget something and it's gone from all of them.
- Categories and rules. "Tag every Uber charge as commuting" becomes a rule that keeps working between conversations, whichever assistant wrote it.
- Documents. Bank statements, payslips, P60s, tax forms and receipts are read and filed in your Document Library with each value cited to its page, so any connected assistant can answer "what tax did my last payslip take?" from the document itself.
- Financial health. Era's health figures, the metrics behind them and the analysis are there for every assistant to explain, so both start from the same numbers.
How do I see, and change, what Era remembers?
Era keeps everything it remembers about you in one list, written in plain words, and you can correct or delete any item on it. You can also ask any connected assistant to forget something, and Era removes it for all of them at once, so nothing lingers in one assistant after you've told another to drop it.
Open the Shared memory page in Era to see the list.
Era never sells your data or uses it to train models. What Era Context stores and how to manage it covers the detail.
Can I add Gemini, Muse or Instinct to the same memory?
Yes, and each joins the same memory as soon as it connects. Gemini, Perplexity, Poke, OpenClaw, Cursor, VS Code and GitHub Copilot connect to Era as an MCP server. Muse and Instinct connect through their own connector or API client, using Era's API and an Era API key that you make, set to expire and can revoke.
The two that use a key have their own guides:
The table in what is MCP lists which assistants can use an MCP server.
Is it safe to give two assistants the same access?
It's safer than sharing a bank password, because no assistant ever holds your bank login. Each connects to Era with its own approval, you choose whether it can read or also change things, and you can revoke either in a moment. Revoking Claude leaves ChatGPT as it was, and your bank connections stay in place.
How to audit an AI agent that manages your money shows where to see exactly what each assistant has done, and is it safe to give AI your financial data covers how Era protects it.
Can my partner and I share it too?
Yes. A shared space in Era lets you and a partner or housemates share chosen balances, transactions and documents, each person sharing only what they pick, with a "stop everything" control for every member. Your assistants read your side of it like everything else, so "who owes whom?" is answered from the ledger your partner sees too.
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