We (Era Finance) have a solution for exactly this - Era Context, an MCP for connecting any compatible agent to your personal finances - https://era.app

It's focussed on read tools at the moment, but we have write tools coming (money transfers, debt paydown, etc)

Check it out and let me know if you'd like to see any particular features landing - just email alex at the above domain name.

For background context I'm Alex the CEO, I'm ~new to HN but was the former head of web presence at stripe.com and was at Square / CashApp before that. Hi!