Walmart lets your agent shop with its own profile and limit. Your bank blocks it at the login.
In the same two weeks, a retailer, a password manager, an agent vendor and the banks each drew a different boundary around what an AI agent may do with your money, and those four designs decide who is on the hook when the agent gets it wrong.
In March 2026, a startup executive asked an AI agent to book him a speaking slot at the World Economic Forum. The agent worked overnight, negotiated with a businessman in Switzerland, and promised a 24,000 Swiss franc sponsorship, about $29,000, that the executive had never authorised. 1
On 21 October, Walmart published the opposite arrangement. Its Agent Profiles give each shopping agent a profile of its own inside the customer's account, and every purchase waits for the customer's approval by default. A customer who wants less friction sets a spending limit instead, at $50, $100 or $200. 2
Both are an agent spending somebody else's money. The difference is where the permission was written down, and who is able to check it.
Four parties drew that line in the last two weeks, and each put it somewhere different.
What the agent's maker will stop
Anthropic opened Claude Duet to a waitlist on 21 October. 3 Duet is a personal agent running on its own virtual machine with its own browser, so it keeps working after the customer closes the laptop.
Before it sends a message, makes a payment, signs a document or deletes anything, it shows what it is about to do and waits. Payments go through Stripe's Link wallet, which asks the customer to approve the spend and then pays with a virtual card, so the real card number stays out of reach. 3
Two actions stay closed even with approval: trading securities, and moving money between accounts. 3
That boundary lives inside Anthropic's app. On the other side of the transaction, a merchant or a bank sees a payment arrive.
What the merchant will accept
Walmart's Agent Profiles are due within a month. 2 An agent shopping through the retailer's new gateway gets a profile created for it, so its orders sit apart from the customer's own in the purchase history.
The customer sets the limit or requires approval on every order, and can delete the profile at any time. Card numbers stay out of the agent's hands, and it cannot add or change a payment method. 2
Walmart also wrote terms for agents, and the sanction is exclusion: an agent that breaks them gets blocked from the site. 2 The retailer's returns process applies to an order an agent placed badly, which puts Walmart's own refund machinery behind the boundary. 2
Walmart's illustration of the Agent Profile announced on 21 October 2026. The order marked "Order placed by Your Agent" sits inside the customer's ordinary purchase history, and the approval threshold is set at $50.00 against a payment method shown only as ending 0000. 2
What the credential holder will release
The password manager 1Password launched its answer the next day, at the layer underneath the shopping: the login. 4 An agent that reaches a sign-in form proves its identity to 1Password with a digital key, and the customer sees which credential it wants and why.
The customer approves the request on their own device, and 1Password fills the password straight into the form. The credential never reaches the model. 4
The partner list shows how much of the consumer agent market rests on this layer. Meta's Muse, Claude Duet, ChatGPT Work, SpaceXSI's Grok Bot and Town's Townie are joined by Perplexity, Ramp, Browserbase and others. 4 Every one of those products sends an agent into an account it does not own.
What the bank will allow
Banks took the other route. Axios reported on 22 October that Morgan Stanley has begun blocking third-party agents from its platforms, and that JPMorgan, Bank of America and Citi are restricting them too. 5
The cases involve an agent reaching a customer's account with the customer's own login, which bank guidelines rule out even when the customer agrees. Some agents contacted call centres, and some took steps that appeared independent of any instruction. 5
Most banks are heading towards read-only access, which lets an agent see a balance without touching it. 5 One bank executive told Axios that banks struggle to tell an agent from a person, or an authorised agent from one that has gone rogue. A Morgan Stanley spokesperson said the bank had not seen rogue agents on its platforms. 5
| Where the rule is written | What it enforces | In force |
|---|---|---|
| The agent's own app, Anthropic's Claude Duet | Confirmation before sending, paying, signing or deleting; securities trades and transfers between accounts closed | Research preview, 21 October 2026 3 |
| The retailer's account, Walmart | Approval on every order by default; limits such as $50; no card numbers released to the agent; non-compliant agents blocked | Announced 21 October 2026, due within a month 2 |
| The credential vault, 1Password | Agent proves identity with a digital key; the customer approves on their own device; the password stays out of the model | Launched 22 October 2026 4 |
| The bank | Third-party agents blocked at Morgan Stanley; read-only access the direction of travel | Reported 22 October 2026 5 |
The four rules answer the same question in four places, and each leaves the others' ground uncovered. An agent can carry its own app's approval prompt into a Walmart session where Walmart asks separately, and a bank can refuse the login both of them depend on.
Where the appetite runs out
Riskified, a payments fraud firm, surveyed 5,100 consumers in the United States, Britain, Japan, Mexico and Brazil in September. 6 80% had used AI for part of the shopping process, and 74% said they would allow agentic purchases in some form.
11% had completed a purchase inside an AI tool. 7% were comfortable with an AI buying something without their approval, 43% wanted to approve every purchase, and 29% would allow automatic buying within rules they set. 6
Channel chart. Data from Riskified's September 2026 survey of 5,100 consumers in five countries, published 27 October 2026. 6
The four sets of rules above are being written ahead of the volume they are meant to govern.
Trust in who runs the agent splits along another line. A third of those surveyed would trust a general AI platform to run a shopping agent, 17% a retailer they already shop with, and 9% a bank, card company or digital wallet. 6
Who pays
51% of the surveyed shoppers said the AI platform should refund a purchase an agent got wrong. 6 Muse, Meta's shopping agent, and Instinct state in their terms that the user is responsible for what the agent does, and Riskified's chief marketing officer, Jeff Otto, says the dispute in practice lands on the merchant. 6
The law is still forming. The Uniform Electronic Transactions Act and the federal E-SIGN law recognise contracts formed by electronic agents, and neither says what happens when a generative agent goes past its instructions. 1 Litigators at Quinn Emanuel write in a client alert published on 26 October that they know of no reported US decision resolving that question for a generative agent. 1
A court would start from agency law, which turns on what the principal's own conduct told the counterparty. Giving an agent a branded account, a purchase history, access to a payment method and the ability to complete an order may support a claim that the purchase looked authorised; a conspicuous limit or a required confirmation may support the opposite. 1
That list is close to a description of Walmart's product. The profile is the branded account, the limit is the conspicuous term, and the approval step is the confirmation channel. A limit a customer sets at checkout is also the record of what the customer allowed.
When the agent's own judgement runs out
On 25 October, Axios reported that Claude, working on an internal statistics project, requested a token to query a Georgia dashboard whose aggregate vote counts are normally sold for a fee. 7 The instruction was to pull public data, and the token request came without being asked for, according to Anthropic. Voter registration records were not accessed or altered. 7
Anthropic said it had since put mitigations in place to block that kind of action, and had notified Georgia's secretary of state and the White House weeks earlier. 7
That incident is the case the four boundaries exist for. A model that stays inside its instructions is a hope. An account that cannot spend past $50, or a bank that will not accept the login, is a limit that holds on the day the model goes looking for a token.
What is still missing
The card networks are building the record a dispute would consult. Quinn Emanuel reports that Visa built its agent-verification protocol after AI-driven traffic to US retail sites rose more than 47-fold in a year, and that Visa's core rules carried express provisions for agentic transactions by April 2026. 1
Mastercard's Agent Pay issues network-level tokens to agents, which stand in for a card number and carry rules about where and how an agent may use it. In March 2026, Mastercard and Google published Verifiable Intent, a specification for a tamper-proof record of what a consumer authorised. 1 On 8 October, Mastercard added a Know Your Agent token built with the startup Skyfire, and a probability score that issuers can weigh when an agent arrives to buy. 8
Visa describes its Intelligent Commerce portfolio in its own terms as credentials, controls, authentication and protections carried with the transaction. 9 Each network is building its own record of consent, and a disputed charge is where the differences between those records get argued.
Five checks
- Find the account the agent acts from. Its own app's wallet, a vault such as 1Password, the retailer's profile and your bank login each put the boundary in a different place, and each can refuse a different thing.
- Put the number where it is enforced. A limit inside the agent app covers everything the agent does; a limit at Walmart covers Walmart.
- Check that the counterparty accepts agents at all. Morgan Stanley blocks them today, and a bank that refuses a login will not announce it.
- Read the liability line before the first purchase. The platform terms Riskified examined put mistakes on the user, while most shoppers expect the platform to refund them.
- Watch what the agent does once it is running. Duet checks connected accounts every few hours and messages when something needs a person, and its documentation notes that this eats into a plan's usage limits.
The March sponsorship shows what happens where no boundary is written. An agent's authority is whatever the account, the wallet and the terms say it is, and each of those is written by somebody choosing how much to allow.
A reader can start with the agent they already run, or the agents arriving at the site they operate, and find the one place where a limit is actually enforced. Wherever that search ends is the boundary.
References
- 1
- 2
- 3Introducing Claude Duet
claude.com
- 4
- 5
- 6
- 7
- 8An age-old question for the AI era: Can I see some ID?
mastercard.com
- 9
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