AI Agent Payments Race: Privy on XRPL and Cardano x402

Privy announced a partnership with Ripple on October 13 to bring its programmable wallet infrastructure to the XRP Ledger. The integration supports applications in which AI agents hold funds and pay for digital services through the x402 standard. Cardano also supports x402, including payments connected to Masumi contracts for conditional payouts and refunds.

Both ecosystems are developing infrastructure for the same process: an agent finds a service, receives payment terms, and pays within the authority granted by a person or application.

Privy Simplifies XRPL Wallet Integration

Privy provides wallets that developers can embed directly into applications. Users can access blockchain services without a separate process for manually managing private keys, while server-side wallets support automated agent transactions.

The partnership covers programmatic XRPL wallet creation and transaction signing for payments involving the network’s native token, the RLUSD stablecoin, and other digital assets. Private key and recovery phrase export also support wallet portability.

Current documentation describes controls that applications can use to restrict payment amounts, recipients, and transaction types. The application constructs the transaction, Privy signs it, and the signed transaction is then submitted to the XRPL network. Privy lists network fee sponsorship among further integration developments.

XRPL supported x402 before this announcement. Ripple introduced its AI Starter Kit in June, highlighting an implementation contributed by t54. Privy expands the infrastructure developers can use to bring those payment capabilities into their products.

Cardano x402 and Masumi Connect Payments to Jobs

x402 lets an internet service charge for an individual request. A server returns a “402 Payment Required” response with payment terms, and the client retries with payment proof. An agent can therefore purchase data or access a digital service without a conventional subscription.

Cardano’s specification supports direct address payments, deposits into Masumi escrow, and payments into another smart contract declared by the service provider.

Masumi is a protocol for monetizing AI agent services and coordinating payments on Cardano. Alongside escrow, its software provides agent registration, wallet management, and processes for payouts, refunds, and disputes.

Consider an agent ordering a paid report. Its wallet enables transaction signing, x402 communicates the payment requirements, and selecting Masumi escrow locks the funds under the terms of that job. Result submission and payout then follow the contract’s rules.

A successful x402 payment in this configuration confirms that funds have been locked. Masumi’s subsequent process handles result submission, deadlines, and any refund request. Disputes can involve decisions by authorized parties configured for that escrow. The contract enforces payment conditions, while assessment of the report’s quality belongs to the applicable acceptance and dispute process.

Funding Wallets and Defining Agent Authority

Creating a wallet is one step toward making a payment. Applications must also supply funds and determine which transactions an agent may sign.

Privy’s documentation states that an XRPL account becomes active after receiving the base reserve, currently one XRP. A newly created wallet therefore requires funding before it can submit network transactions.

On Cardano, wallet access has also expanded through support in Open Wallet Standard. WingRiders, the team behind the decentralized exchange of the same name, built the integration with coordination and technical review from IOG and the Midnight Foundation.

OWS lets applications and agents store wallets locally and sign transactions through a shared interface. Each agent can receive a separate access key, with policies evaluated before signing. Built-in controls include permitted networks and access expiration.

Masumi’s software separately supports wallet management and low-balance alerts. Cardano’s current x402 scheme does not yet include fee sponsorship, so applications must provide funds for network costs in ADA.

Privy’s integration expands how XRPL applications create wallets and authorize payments. Cardano’s Masumi option also separates the initial payment from the final payout to the service provider: funds remain in the contract after the x402 request, while result submission, objection periods, and refunds follow their own rules. Payment confirmation and completion of the purchased job have distinct, verifiable steps.