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Walmart Opens an MCP Agent Gateway With Spending Limits While Amazon Blocks Shopping Agents

Walmart launched an MCP-based Agent Gateway and Agent Profiles that let approved AI agents search inventory and buy for shoppers, with spending caps and approvals. A look at the design, the terms for agents, and the opposite stance Amazon has taken.

Metir AI TeamOctober 23, 20267 min read
Walmart Opens an MCP Agent Gateway With Spending Limits While Amazon Blocks Shopping Agents

Walmart announced on October 21, 2026 an Agent Gateway, a Model Context Protocol (MCP) server that lets approved AI agents search Walmart's online inventory and make purchases for shoppers, according to TechCrunch. CEO John Furner announced it at the Masters of Scale Summit in San Francisco. The same report contrasts it with Amazon, which is blocking third-party shopping agents.

The two retailers have chosen opposite answers to the same question: who controls the relationship when an AI agent shops on a customer's behalf.

MCPProtocol usedOriginally created by Anthropic
Next monthAgent Profiles rolloutPer Walmart
2Retail brands coveredWalmart and Sam's Club
0Payment details agents can accessUnder Walmart's agent terms

What Walmart announced

FeatureWhat TechCrunch reports
Agent GatewayAn MCP server through which approved agents search inventory and buy for shoppers
PrivacyAgents can shop for a customer's usual brands without sharing personal details or purchase history
Agent ProfilesRolling out next month; each agent gets a dedicated profile in the customer's account, so its purchases appear separately
ControlsCustomers can require approval for every transaction or preauthorize purchases up to a spending limit
LifecycleProfiles are created the first time an agent is used, can be deleted at any time and do not require Walmart+
ScopeSupports both Walmart and Sam's Club

Walmart compares an Agent Profile to adding an "authorized user" on a credit card, a familiar model from payments in which a second party can spend within limits set by the account holder.

The terms agents must accept

Walmart published terms for agents. Per TechCrunch:

  • Walmart's returns policy applies even when an agent acts incorrectly.
  • Agents cannot act beyond the shopper's intent.
  • Agents cannot access payment information.
  • Agents can only access data needed for the task.
  • Noncompliant agents will be blocked.

The first item is the most consequential for shoppers: keeping the returns policy in force when an agent acts incorrectly means a customer retains the same return rights as for a purchase they made themselves. Walmart's report does not say how agent mistakes are otherwise handled.

Two retail postures

AWS logoAWS
Amazon is the contrast case in TechCrunch's report: it blocks third-party shopping agents.
WalmartAmazon
Stance toward third-party agentsApproved agents admitted through a gatewayBlocking third-party shopping agents, per TechCrunch
MechanismMCP server, Agent Profiles, published termsBlocking of third-party agents
ContextAlready partners with Meta's Muse and offers integrations with ChatGPT and GeminiOur coverage of the Meta Muse standoff

The table reflects TechCrunch's characterization and our earlier coverage, not statements from either company about its strategy. Neither approach is evidently superior from the available evidence. In general terms, opening a gateway trades some control over the shopping experience for access to agent-driven demand, while blocking agents keeps the retailer's own interface central at the cost of excluding that demand. Neither company has described its reasoning in the sources we reviewed.

“

An agent profile turns a vague act of delegation into an account feature with limits, history and an off switch.

Metir analysis

Analysis: why the design is notable

1. Delegation becomes a first-class object. Rather than letting an agent borrow a user's session, Walmart gives the agent its own profile. That separates agent activity in the account history, which makes reviewing and reversing it simpler than if it were mixed into human purchases.

2. Limits live with the customer. Approval for every transaction versus a preauthorized limit puts the trust decision in the user's hands. The same pattern, read-only versus transactional access, is the central question in banking, where JPMorgan and Schwab say they block outside agents from moving money.

3. Payment details stay out of the agent's reach. Under the terms, agents cannot access payment information, so a compromised or misbehaving agent cannot leak a card number it never held. How purchases are then paid for is not described in the report.

What the report does not say

  • How agents are approved, or what the technical requirements are.
  • What spending limits are available or how they are set.
  • How many agents or shoppers will use the gateway.
  • Whether the terms will be enforced by technical controls or by contract.
Exterior of a Walmart Supercenter in Quincy, Florida, seen across a parking lot
A Walmart Supercenter in Quincy, Florida, photographed in May 2026. The photo is illustrative and does not show the Agent Gateway. Credit: FLGALine1999, CC0, via Wikimedia Commons.

What it means for builders and shoppers

For developers of shopping agents, a gateway with published terms is a defined route in, with obligations attached. For shoppers, the practical question is whether an assistant they already use can act within limits they set. Assistants that work across several model providers, such as Metir, depend on open protocols like MCP to connect to retailers like these without a bespoke integration for each.

What to watch

  • Agent Profiles launch. TechCrunch says it rolls out in the next month, which will show the real controls.
  • Which agents are approved. The first list will show how open the gateway is in practice.
  • Amazon's next move. Whether it keeps blocking or introduces its own agent access.
  • Dispute handling. How returns and errors are handled when an agent is at fault.

Sources:

  • While Amazon blocks AI agents, Walmart rolls out the welcome mat (TechCrunch)

Image credits

  • Hero and in-body photo: "Walmart Supercenter - 488 - Quincy, FL.jpg" by FLGALine1999, Wikimedia Commons, released under CC0. Reviewed visually before use.

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