Stripe and Circle Target AI Agent Payments as Stablecoins Challenge Credit Card Giants

On 8 March 2026, Stripe and Circle were highlighted for investing heavily in infrastructure that lets AI agents conduct autonomous payments using stablecoins. Around 40,000 on-chain agents currently handle about $50 million in transactions, a tiny share of the $46 trillion annual stablecoin volume, while forecasts see the AI agent market reaching tens of billions of dollars by 2030. This emerging "agentic economy" raises both competitive pressure on card networks and new risks, including a test agent that mistakenly moved $450,000 due to a logic flaw.