The x402 open payment protocol experienced a significant increase in weekly transaction volume, reaching $15 million in March. This surge occurred despite a 98% drop in transaction count from its peak of 20 million in November 2025 to 420,000 transactions. Consequently, the average transaction size rose sharply from $0.04 to $26 in March. These changes coincided with a major announcement from Coinbase, which may have influenced the protocol's activity.