MoonPay open-sourced a universal wallet standard for AI agents to hold value and sign transactions across multiple blockchains without exposing private keys. Backed by 15+ organizations including PayPal, Ethereum Foundation, and Circle, it fills the last missing layer in the agent economy payment stack. The article adds critical perspective on unresolved security and regulatory risks around autonomous agent transactions.

Tempo, a Stripe-backed crypto startup, raised $14.5M to scale stablecoin-based payment infrastructure.

This reflects continued capital allocation toward programmable payment rails, even as broader crypto markets remain selective.

Most current efforts in agentic payments focus on enabling transactions: stablecoins, APIs, micropayments.

However, transactions alone are not sufficient.

Autonomous systems require:

• Deterministic execution
• Cryptographic enforcement
• Neutral settlement layers

Without these properties, coordination costs increase and automation breaks down.

What we are beginning to see is the emergence of a new infrastructure category, one that extends beyond payments into coordination.

This shift will define the next phase of the agentic economy.

A space to slow down, read deeper, and sit with ideas worth more than a scroll.

Understanding the infrastructure layer being built for autonomous agents also means rethinking the economics behind it. Collateral plays a less obvious but decisive role in shaping the real cost of agentic payments, and it's worth a closer look.