Solana has become the dominant chain for the x402 micropayment protocol, capturing approximately 70% of its monthly volume with around $24.24 million in transaction volume over the past 30 days. Developed by the Coinbase Developer Platform team, x402 leverages the HTTP 402 status code to enable AI agents to pay for APIs and data in USDC in a programmable manner. Solana has processed over 35 million cumulative x402 transactions and surpassed Base in daily transaction counts for the first time in six months on August 25, 2026. Overall x402 activity has declined from its 2025 highs.
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