Personal AI agents are getting blocked at checkout. Small…

A TechCrunch investigation this week found Muse, Instinct, and ChatGPT's Dots failing across Walmart, eBay, Yelp, Zillow, and multiple airlines — often because of anti-bot defaults the site owner never knowingly set.

A TechCrunch investigation published October 6 found that Muse, Instinct, and ChatGPT’s Dots are routinely bounced from checkout flows at Walmart, eBay, Yelp, Zillow, Pizza Hut, Adidas, Delta, and United. The agents don’t crash. They fail silently, and the would-be customer moves on.

For a lot of the sites involved, the block isn’t a policy choice. It’s a default. Cloudflare’s September 15 AI-crawler flip switched millions of SMB sites to a posture that treats permissioned personal agents the same way it treats scrapers. The owners never knew they opted in.

The timing matters because the demand side is already here. PYMNTS Intelligence’s August survey of 2,191 consumers found that roughly 23% of US shoppers, about 61 million people, now start product research with AI. Muse hit No. 1 on the US App Store last month, with what Meta engineering VP David Singleton calls “millions of users” and a base “growing rapidly.” Where those AI-assisted purchases actually close is lopsided: 59.7% at Amazon, 19.5% at big-box and department chains, 6.3% at a brand’s own site.

That last number is the small-business number. It’s small because the storefronts aren’t legible to the agents trying to spend money there.

This week, Meta, Walmart, Stripe, Sierra, and others published the Personal Agent Protocol, an open standard for identifying and admitting permissioned agents. “If you think about email, it works great because it is a standard that everyone can use to talk to each other, and we think this is going to be quite similar,” Singleton said. Sierra co-founder and OpenAI chair Bret Taylor was blunter about the status quo: it “is kind of chaos until such a standard exists.” He also said he was “really disappointed” that OpenAI and Anthropic haven’t signed on.

The incumbent response is already visible. Amazon blocked Muse last month. Resy locked a user’s account after Instinct hammered it with hundreds of booking attempts per hour. Delta’s Heena Chavda offered the standard holding statement about “continuing to evaluate how new technology, including external AI agents, could enhance the way customers engage with Delta.” United’s terms still prohibit any “robot, spider, other automatic device, or manual process.”

The parallel is the mid-2000s mobile transition. Sites that waited to be mobile-readable lost a decade of traffic to ones that didn’t. Agent-readability is the same switch, running faster.

Personal AI agents are getting blocked at checkout. Small storefronts are often the ones doing it by accident.

Sources