eBay Shuts Out AI Agents: Meta's Muse Can No Longer See Listings

Imagine this: for several weeks in a row, you get a neat list of watches from eBay every morning. It includes a link to each listing, the price, shipping terms and notes on condition. Then, suddenly, your agent says the site won't let it in. That is exactly what happened to a Verge reader using Meta's Muse agent. The editorial team reproduced the situation with other queries. Muse could not pull either links or details from eBay, and sometimes sent the user to third-party sites that mirror the marketplace's listings.

What eBay actually said

There is no official "yes, we blocked you." Company representative Sybille St. Arromand did not answer a direct question about new limits. She did explain, however, that eBay restricts third-party access selectively, including because of unauthorized scraping and training of models on the platform's data. At the same time, negotiations with potential partners are under way, and the main goal is to preserve a "trusted end-to-end experience" for buyers and sellers. Meta declined to comment.

The context matters. eBay had previously amended its user agreement to ban "buy-for-me" agents and LLM bots that place orders without human review. But until recently, agents could still browse listings and collect search results. It now appears that this has been shut off as well.

Retail has split into three camps

The positions of the major marketplaces differ markedly:

• Amazon blocks outside agents completely; they can neither browse nor buy.
• Target lets agents in for some scenarios and blocks them in others.
• Shopify has opened a catalog of a billion items so users can set up agents that buy on their behalf.

The caution is understandable: stores were designed for people with human limitations, not for swarms of bots. In October, The Verge showed how Muse could be used to "hold hostage" an item on The RealReal. The agent kept adding the item to the user's cart, so no one else could buy it. After the publication, the platform updated its bot protection.

Demand is still tiny

The numbers dampen enthusiasm. Uber reported that in the third quarter it completed just four rides through third-party agents, and during Halloween week it received about 500 Uber Eats orders. DoorDash counted "a few hundred" orders from agents against 993 million orders in the quarter. In other words, agentic commerce is so far closer to a demo than to a real sales channel, and marketplaces have little reason to risk security and data for it.

What to do about it

If you build agents, don't base your product on browser access to a single retailer. It works today and may break tomorrow without warning. Build in graceful degradation: what the agent tells the user when it is blocked, and how it says so explicitly. The story with the mirror links shows the risk. An agent that silently substitutes third-party copies of listings can serve outdated prices or lead to fraudulent sites. Look for official channels: APIs, partner programs, open catalogs like Shopify's.

If you build a product for retail, it is time to decide what an agent is to you. It makes sense to separate catalog reading from purchasing: limit browsing with rate limits, and leave checkout to a human or a verified partner. Don't forget limits on carts and reservations, or your inventory will start being manipulated.

The story's limitations are worth stating too. eBay has not confirmed a block, and the evidence boils down to one reader's experience and The Verge's reproduction. But the trend is visible. The door is opened to agents only by those with whom there is an agreement, and "just walking in and looking around" is ceasing to be the norm.