AINEWS
Meta's new AI shopping agent launches in the US, but Amazon's blockade and Walmart's prior stumbles reveal how deeply retailers resist letting third party agents complete purchases on their platforms.
Meta is launching an AI agent called Muse that can browse and buy things online — but Amazon has already blocked it from working on its marketplace, the latest sign that major retailers are fighting to control how AI systems interact with their platforms.
The confrontation, reported by Jason Del Rey at Stratechery, reflects a broader pattern: retailers from Amazon to Walmart are building defenses against software agents that could reorder how people shop online. Meta confirmed its agent works through a browser, requests approval before purchases, and supports Link payments using one-time-use cards. Shop Pay and 1Password support are listed as forthcoming, according to the company's announcement.
The stakes of that resistance became clearer with the release of Walmart's Morgan Stanley TMT Conference 2026 transcript. In it, EVP Daniel Danker described Walmart's experience with ChatGPT Instant Checkout — a limited single-item transaction flow the company tested and ultimately pulled back. Danker characterized the in-chat experience as "a very temporary moment in time." Walmart had made roughly 200,000 products available through the feature; checkout completed inside ChatGPT converted at roughly one-third the rate of sending the same shoppers to Walmart to finish the purchase. Danker said Walmart's own Sparky assistant would instead "travel directly into ChatGPT and Gemini" — the merchant's brain riding the assistant's reach, rather than surrendering the checkout.
Del Rey, writing in Business Insider, cited the Walmart experience as evidence that cart-building behavior — not single-item purchases — dominates how shoppers actually use AI tools. When the checkout flow forced one-at-a-time transactions, users abandoned the flow rather than adapt. The limitation was not a technical failure of the AI's ability to reason but a constraint of the payment and fulfillment interface Walmart exposed.
This matters for Meta's approach. Muse uses Link payments and one-time-use cards — a payment architecture that reduces the retailer's ability to block or limit the agent's activity by routing funds through a separate payment layer rather than interacting directly with a retailer's transaction API.
Amazon confirmed it has blocked Muse from operating on its marketplace, according to Stratechery's reporting. The company did not publicly disclose the technical mechanism or the policy rationale behind the decision. Amazon has historically moved to restrict third-party tools that interact with its platform at scale, viewing direct agent access as a potential threat to its customer relationships and fee structure.
Del Rey identified real-time product-data access and retailer bot defenses as the twin technical obstacles any AI shopping agent must overcome. Amazon's block addresses the first obstacle directly: without access to real-time pricing, product availability, and search rankings, an agent operates on stale information and cannot reliably complete transactions.
Meta describes Muse as a personal AI agent launching in the US on iOS, Android, and the web. The agent uses a browser interface to navigate sites, requests explicit user approval before completing purchases, and supports Link payments. This browser-based approach is deliberate: it works across retailers without requiring API access, which is the vector Amazon and Walmart have moved to restrict.
The company says additional subscription plans are forthcoming, though no pricing has been finalized. The free tier provides basic browsing and purchasing capability using Link payments. Meta has not published independently measured task-success rates or comparative benchmarks against other AI shopping tools.
Del Rey expressed skepticism that AI agents will meaningfully disrupt major retail advertising revenue within 24 months, a view grounded in the practical obstacles of retailer resistance, payment fragmentation, and user trust. The path from experimental tool to default shopping interface runs through retailers who have shown no appetite to make that transition easy.
Muse's launch is real. Amazon's blockade is real. Walmart's pullback from a limited single-item checkout flow is real. Whether that adds up to a shift in how people buy things online — or simply a more complicated battle for control of the checkout page — remains the open question.