PrimeXBT on Wednesday opened client accounts to ChatGPT and Claude through the Model Context Protocol (MCP), while B2Broker added the same kind of access to its B2TRADER platform last week, with the two firms setting different rules on who signs off on an order the AI prepares. At PrimeXBT, a broker offering CFDs and crypto futures, assistants prepare market, limit and stop orders that run only after the trader confirms them, and before that click the assistant shows the estimated price, fees, margin, leverage and liquidation level. On B2TRADER, which B2Broker sells to brokers, each broker sets the access level: MCP switched off, read-only, or full access that lets agents place, modify and close trades. At least six brokers and trading-technology firms have let AI assistants work inside client accounts since June, FinanceMagnates.com reporting shows, and among them Interactive Brokers widened its AI connector to almost any MCP-based tool in July. PrimeXBT asks for a yes on every order, and its preview adds the estimated liquidation level. Clients connect an assistant with one link and their PrimeXBT login, choosing between Read-only and Read & Trade, and the assistant cannot withdraw or move funds. Jonatan Randin, senior market analyst at PrimeXBT, said the MCP brings "real trading data and functionality into the AI assistants people already know and use." The integration works on demo and live accounts on PX