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

A reader told The Verge that his Meta Muse agent had for weeks compiled a daily digest of watch listings from eBay. This weekend it reported being blocked. The Verge reproduced the problem, and in some cases Muse pointed users to outside sites mirroring eBay listings instead.

eBay had already banned buy-for-me agents that place orders without human review. A spokesperson declined to say whether new limits were imposed, but said eBay takes a selective approach to third-party access and has restricted agents in cases including unauthorized scraping and training on its data.

We understand eBay's position, and in part we agree with it. Retail sites were built for humans with human limits. The Verge showed last month that a Muse agent could effectively hold listings hostage on The RealReal by repeatedly adding them to a cart. A marketplace that relies on trust between buyers and sellers has every reason to be careful about swarms of bots it doesn't control.

But look at what got blocked here: not checkout, just browsing. A person asking a tool to watch listings for them is a pretty ordinary use, and it's the kind of help agents should be good at. When that is shut off, the user doesn't stop wanting it. Instead, as The Verge found, the agent goes to mirror sites, which are worse for buyers, sellers and eBay alike.

The pattern across retail is now clear. Amazon blocks external agents entirely. Target allows them sometimes. Shopify has opened a catalog of a billion listings to agent shoppers. The likelier outcome isn't an open agentic web. It's a patchwork of private deals, where your agent works on the stores that partnered with its maker and fails elsewhere. eBay's statement about evaluating potential partners points straight there.

The usage numbers argue for patience on all sides. Uber says it fulfilled four rides via third-party agents in the third quarter. DoorDash reports several hundred agent orders against 993 million total last quarter. That's tiny. Which means now is the time to set fair rules, such as identified agents, rate limits and clear terms, before gatekeeping hardens into a set of exclusive alliances that decide which assistant can shop where.

Technology companies routinely cite shopping, travel booking and deal-hunting as flagship uses for AI agents. eBay says it is embedding AI across discovery, personalization and selling on its own platform while talking with potential partners about how third-party agents might bring in new customers.