Ripple’s XRP/RLUSD AI payments launch as USDC leads x402

Ripple has launched the “XRPL AI Starter Kit” for developers, enabling AI agents to send, receive and manage payments on the XRP Ledger with minimal human involvement. The toolkit supports x402 payments using XRP and Ripple USD (RLUSD), positioning XRP/RLUSD AI payments for machine-to-machine (m2m) automation. Ripple says x402 activity is still dominated by USDC, citing 120M+ cumulative x402 transactions and about $41M+ settled USDC volume. Base leads by transaction and volume share, with Solana also showing significant usage; the average payment size is around five cents. Technically, x402 uses the HTTP 402 “Payment Required” flow so agents can request a service, submit an on-chain payment, then resume via proof of payment. Ripple highlights XRP Ledger advantages for XRP/RLUSD AI payments, including fast 3–5 second settlement, predictable fees, escrow/multisig support, and a native DEX. New rails for RLUSD were also disclosed: Mastercard added RLUSD to its stablecoin settlement infrastructure across multiple networks, and Ripple integrated Bitso’s Mexico peso-backed stablecoin MXNB for US–Mexico regulated liquidity/settlement. For traders: this is a competitive signal for XRP/RLUSD AI payments tooling, but Ripple did not provide named production customers or scale metrics for agent payments. Researchers also note x402 can add authorization and proof-validation/synchronization risks between web services and blockchain transactions, which tempers near-term conviction.