Users of agents such as Meta's Muse, xAI's Grok, OpenAI's Dots and Instinct have reported being blocked from major websites, The Verge reports. Yelp says it only allows agents that pay for its data licensing, Delta is stopping agents from booking tickets, and JPMorgan Chase and Charles Schwab confirmed they block agents from accounts over security concerns; users report Cars.com and Amtrak no longer work either.

Walmart is going the other way. On October 21 it announced Agent Gateway, an MCP server that lets approved AI agents search Walmart and Sam's Club inventory and buy on a user's behalf, TechCrunch reports. Agent Profiles, rolling out next month, will list each agent's purchases separately and let shoppers require approval for every order or set a spending limit, which Walmart compares to adding an authorized user to a credit card. TechCrunch notes Amazon recently began blocking AI agents from making purchases.