Ripple launches XRPL AI Starter Kit, but Base and Solana lead x402 adoption
In brief
- Ripple launched XRPL AI Starter Kit enabling AI agents to send XRP and RLUSD payments on the ledger
- x402 protocol reached 120 million cumulative transactions; Base and Solana account for majority of volume
- USDC dominates agent payments; XRPL emphasizes three-to-five-second settlement and predictable fees
The x402 Protocol and Early Market Dynamics
The x402 protocol, created by Coinbase and now stewarded by the Linux Foundation's x402 Foundation, enables machines to request payment for API access and services using the old HTTP 402 "Payment Required" standard. A Chainalysis report from early June showed x402 activity on Base rose from near zero in mid-2025 to more than 100 million cumulative transactions through the first quarter of 2026.
A public x402 dashboard from Web3 Trackers shows more than 120 million cumulative transactions, over $41 million of USDC volume settled, and 14 supported chains. But the distribution is narrow. Base accounted for about 70 million x402 transactions and $21.5 million of volume, while Solana accounted for about 45 million transactions and $16.4 million. A late-2025 surge in x402 activity was driven in part by PING, a pay-to-mint meme coin experiment that turned x402 payments into a speculative loop.
Ripple's Institutional Angle
Ripple's pitch centers on protocol-native payments. XRPL payment functions are built into the protocol rather than arbitrary contract code, which could appeal to institutions that want agent payments without depending on new smart contracts. The starter kit aims to lower friction for developers integrating XRPL into AI workflows.
Ripple says XRPL can do that with three-to-five-second settlement, predictable fees, native payments, escrow, multisig and a built-in decentralized exchange.
The early market for x402 has been narrow and mostly dominated by stablecoins, particularly USDC. RLUSD, Ripple's stablecoin, hasn't yet captured meaningful volume in agent payment flows. Ripple did not announce named customers, transaction volumes or a production deployment using XRP or RLUSD for agent payments at scale.
Challenges remain. A recent academic paper argued that x402 introduces web-and-chain failure points around authorization and payment-service synchronization. Ripple's developer tools address tooling friction, but won't solve network effects favoring Solana and Base, where the bulk of early activity has clustered.
