JPMorgan already blocks outside AI agents like Meta's Muse from customer accounts.

Jamie Dimon said so on yesterday's earnings call.

This was inevitable.

Let the agent wars begin!

---

The block covers any third party logging into a Chase account with the customer's credentials to pay bills or move money.

However.

Read-only data through Plaid still works. There's no timeline for letting agents act.

Dimon called them "rogue agents" and warned customers of a "liability transfer" when they hand an agent their logins. He also told regulators to prepare for what agents could do to deposits.

JPMorgan is building its own in the meantime.

Smart Cash is in pilot and moves money between your Chase accounts for yield.

The big firms will block first and ask questions later.

• Amazon blocked Muse last month with a list of complaints that read like a term sheet: tell us, identify the agent, don't store our customers' logins.
• JPMorgan's statement is similar.

I think it's sensible as a starting point to say. Not all agents can have unfiltered access.

But

Consumer agents are inevitable. You can't block everything forever.

Security is everything. And it will happen on the banks' terms, because they remember open finance.

That ended a 2-2 draw. Screen scraping got fintech in, then JPMorgan charged Plaid for the data and the fees stuck.

Expect the same playbook, faster. The bank checks which agent it is and what the customer delegated, keeps logins out of it, then charges for the connection.

The risk for banks is you keep the account and lose the customer. Your salary still lands at Chase while your agent shops for your next card, savings rate and insurance policy somewhere else.

So block the scraper. Then be the thing their agent uses. Give it a permissioned way in, read-only first, with a step-up in your own app before any money moves.

I don't want your agent. I want my agent to use your thing.

I wrote about this twice:
Agent Wars Pt 1, Amazon vs Muse: https://www.fintechbrainfood.com/p/agent-wars
Agent Wars Pt 2, The agentic bank run? https://www.fintechbrainfood.com/p/agentic-bank-run

CNBC: https://www.cnbc.com/2026/10/13/jpmorgan-ai-agents-account-access.html