eBay blocks third-party AI agents from browsing its listings

eBay has blocked third-party AI agents, including Meta's Muse, from pulling listings from its marketplace — the latest speed bump in a commerce race whose adoption numbers remain strikingly small.

A reader told The Verge that for several weeks he had his Muse agent browse and curate a daily digest of watches for sale on platforms like eBay, with links to listings, price, shipping details, and notes about condition or style. This weekend, Muse could no longer pull any links or details from eBay and reported that it was blocked from the site. The Verge reproduced the experience with other search requests; in some cases Muse redirected users to outside sites that mirrored eBay listings.

What does the block change for practitioners?

Until this change, agents could browse eBay and retrieve listings even though the company's user agreement already banned tools like "buy-for-me agents" and "LLM-driven bots" that place orders without human review. That distinction — browsing permitted, autonomous purchasing forbidden — has now collapsed on the browsing side too.

The move matters because shopping is one of the most frequently invoked use cases for AI agents. Technology companies promote agents that book travel, find deals, and purchase goods on behalf of humans. Yet agents keep losing access to the very retailers that would make those workflows possible.

eBay spokesperson Sybille St. Arromand declined to say directly whether the company imposed new limits. "As it pertains to third-parties, we take a selective approach to how they access and interact with our marketplace. We have restricted agent access in certain cases, including unauthorized scraping and training on our data," she said. "We have ongoing discussions with potential partners and are evaluating ways third-party agents could help new customers discover eBay's unmatched inventory, and our focus is on preserving the trusted end-to-end experience that buyers and sellers expect from eBay."

She noted that AI is becoming embedded throughout the platform for discovery, personalization, and the selling process. Meta declined to comment.

How do other retailers handle agent access?

The industry has split into roughly three positions:

• Amazon blocks external agents entirely from browsing or shopping.
• Target applies partial restrictions: agents succeed in some browsing instances and get blocked in others.
• Shopify has opened its catalog of a billion listings so shoppers can configure agents to purchase items on their behalf.

Retail sites were built on the assumption that they are selling to humans, with human limitations, not swarms of bots. That assumption breaks under agent traffic. In October, The Verge discovered that someone could use Muse to effectively hold product listings hostage on The RealReal, a secondhand designer consignment site, by having an agent continually add a product to the user's cart. The RealReal updated its bot system after the reporting.

Is anyone actually shopping through agents?

While retailers adjust their defenses in real time, the usage data suggests agentic commerce remains marginal:

• Uber fulfilled only four rides via third-party agents in Q3.
• Uber fulfilled only around 500 Uber Eats orders during the week of Halloween.
• DoorDash reported only "several hundred" orders placed via third-party agents — out of 993 million total orders last quarter.

Those figures put the agent revolution in perspective: platform-level blocking, selective partnerships, and single-digit or triple-digit transaction counts describe a market still finding its first real users. Whether eBay's door reopens through negotiated partnerships, as St. Arromand's statement hints, will say much about which model — Amazon's wall or Shopify's open catalog — the rest of retail follows.