eBay explicitly bans AI "buy for me" agents in user agreement update
Motivations for the Ban
- LLM “buy for me” agents are seen as likely to cause:
- Hallucinated or mistaken orders, leading to chargebacks, support load, and disputes.
- More returns and cancellations when bots misunderstand user preferences or miss “gotchas” like “box only.”
- Abuse at scale: arbitrage, promotion stacking, triangulated purchases, refund scams, and dropshipping schemes.
- Several comments suggest eBay wants:
- To be the gatekeeper/paid API for any agents shopping on the platform.
- To pre-empt big LLMs turning eBay into a commoditized backend data source.
- The clause is viewed as a defensive/legal hedge: it doesn’t need to be perfectly enforced but lets eBay disclaim responsibility and punish abusive integrations.
Enforcement and Detection
- Some argue it’s “impossible to enforce” because agents can drive real browsers and spoof fingerprints or human-like behavior.
- Others note eBay already does aggressive device/browser fingerprinting and behavioral modeling, and can likely detect many automated patterns.
- Ban is seen as mainly useful after problems occur, not as a hard technical barrier.
Bots, Sniping, and Auction Dynamics
- Users question why “buy for me” bots and scrapers are banned while sniping bots remain tolerated.
- Explanations:
- Scraping and auto-buy can bypass eBay’s interface and discovery; sniping still runs fully on eBay and keeps humans on-site.
- Long subthread debates:
- How eBay’s proxy bidding works vs sniping.
- Whether sniping really helps, given second-price mechanics, and how irrational bidders, “nibblers,” and ghost bidding change incentives.
- Alternative auction designs (time extensions, higher bid increments) and their tradeoffs.
Proposed and Critiqued AI Shopping Use Cases
- Supportive ideas:
- Agents that monitor for deals with fuzzy requirements (“cheap home server,” specific vintage guitars, car hunting).
- Assistive agents for disabled users.
- Arbitrage/mispricing detection and resale workflows.
- Skepticism:
- Many would never let an AI autonomously spend even a few hundred dollars, especially on used items.
- High perceived risk of scams, counterfeits, shipping/customs surprises, and nuisance returns.
Business Model, Data, and Platform Incentives
- Strong view that the real target is “laser-focused” agent buying that:
- Skips browsing, sponsored listings, recommendations, and impulse buys.
- Turns eBay into a low-margin “dumb pipe” for transactions.
- Ban is framed as:
- Protecting eBay’s attention/ad-driven funnel and data as a monetizable asset.
- A precursor to paid, controlled access for agents, rather than outright elimination.
Seller/Buyer Experience and Returns
- Multiple anecdotes of:
- High effective fees, complex fee structures, and eBay taking a cut of shipping.
- Painful return scenarios where sellers lose item, shipping both ways, and fees.
- Perception that eBay increasingly favors power sellers/dropshippers over casual users.
- Some note competition from Facebook Marketplace and local options, though eBay still wins for niche/national-market items.
Policy, Legal, and Meta-AI Discussion
- Quoted clause explicitly bans “robots, scrapers… LLM-driven bots, or any end-to-end flow that attempts to place orders without human review” without permission.
- Debate over whether user agreements “have to be obeyed” vs practical risk of bans or lawsuits.
- Meta thread about AI-written comments on HN itself, with some users calling certain posts “LLM slop” and worrying about a “dead internet” feel.