Eコマース向けステーブルコイン決済ゲートウェイ

Circle's new API for USDC is pretty solid for integrations, and they're expanding chain support rapidly. Might be worth a look. Fees are competitive, especially for larger volumes.

Honestly, the 'competitive transaction fees' part is still the biggest hurdle. Most stablecoin gateways are still pricier than traditional credit card processors once you factor in conversion and settlement.

Have you considered just using a direct crypto payment processor like Coinbase Commerce and letting them handle the stablecoin aspect? Might simplify things from your end, though multi-chain might be limited to what they support.