Onchain OS, OKX’s AI‑optimized on‑chain stack that lets AI agents and developers plug into web3 finance across many chains, has unveiled the Agent Payments Protocol (APP), an open standard for agent-driven commerce as AI systems increasingly move from task execution to autonomous business operations.
The protocol is designed to support the full economic lifecycle, including quoting, payments, settlement, and future dispute resolution.
Today, when an AI agent needs to pay for something, it hits a wall. It can handle a single transaction, but real commerce is more complex and typically involves negotiating terms, waiting for delivery, metering usage over time, and resolving disputes. Most existing tools can’t manage that, forcing agents to hand off to a human.
With APP, OKX aims to close that gap by allowing a single agent to manage an entire business relationship autonomously with human intervention reserved for the exception, not the rule.
The protocol is built as a cross-chain protocol, designed to work across networks including Ethereum, Solana, and other networks. It enables agents to transact with services, merchants, and other agents using multiple payment formats such as upfront payments, usage-based billing, and structured plans.
The APP is supported by OKX Agentic Wallet, which offers self-custody, secure execution environments, and multi-chain compatibility. Developers can integrate agent payments through a Payment SDK that supports use cases such as instant payments, batch transactions, pay-as-you-go flows, and escrow settlement.
Compared with existing agent payment solutions, which typically handle only single-request payments to APIs or services, APP expands functionality to include full commerce workflows. These include escrow mechanisms, dispute resolution frameworks, and autonomous agent-to-agent interactions.
In practice, the protocol supports workflows such as per-call billing for APIs, escrowed task execution between agents, and autonomous spending from funded wallets across multiple services with real-time settlement and full transparency.
AWS, Alibaba Cloud, the Ethereum Foundation, Solana, Uniswap, Paxos, and MoonPay signed on from day one, among others.
OKX CEO Star Xu called it the result of “years of experience in onchain infrastructure and AI, together with an incredible group of partners across cloud, L1s, DeFi, and AI.”
Proud of the OKX team for launching the Agent Payments Protocol (APP).
Built on years of experience in onchain infrastructure and AI, together with an incredible group of partners across cloud, L1s, DeFi, and AI.
This is how the agent economy gets real.
Thanks for our… https://t.co/tDf9pOXpWq
— Star_OKX (@star_okx) April 29, 2026
OKX has been steadily repositioning from a trading venue to an infrastructure provider. Its venture arm has invested in projects supporting autonomous agent infrastructure.
The company recently received a strategic investment from Intercontinental Exchange, the parent company of the New York Stock Exchange, in a deal that values the crypto exchange at around $25 billion.