0x Protocol, a DEX aggregator API that has routed $180 billion in swap trading volume since 2017, made its cross-chain API publicly available on Wednesday. Twelve bridge providers are live from day one and can be accessed through a single API call.
The partner list includes Circle, Chainlink, USDT0, Relay Protocol, LayerZero, Optimism, Across Protocol, Mayan, Stargate Finance, NEAR Protocol, Gas.zip, and Squid Router. For each 0x product page, the API delivers routes with a median bridge time of 10 seconds and an estimated response of less than 750 ms. The company reports an underlying infrastructure uptime of 99.97%.
The selling point for developers is integration. Wallets or apps that are already on top of 0x’s Swap API can activate cross-chain routing without adding a vendor or writing bridge-specific error handling. 0x monitors routes in real time and switches providers if one degrades.
competitive framework
Cross-chain swaps are a competitive market. 1inch launched its Fusion+ cross-chain order flow product in 2024. LayerZero, Wormhole, and Across each use direct developer APIs to run native bridging stacks. These protocols typically require developers to select and maintain specific bridges. 0x positions its API as a layer that removes that decision.
Across Protocol, which uses optimistic oracles to underwrite high-speed bridge fills, processed over $15 billion in bridge volume in 2025. LayerZero powers OFT standard token transfers. Stargate is a major consumer application. Both protocols are currently listed as partners for the 0x Cross-Chain API. This means that 0x aggregates competitors rather than completely replacing them.
From private beta to general availability
The Cross-Chain API entered private beta with select bridge partners on February 25, 2026. Wednesday’s announcement removes the invitation gate and expands the partner set to 12, according to the company’s blog. 0x says it has enhanced its swap infrastructure for the Coinbase Developer Platform, MetaMask, Phantom, Robinhood Wallet, and Trust Wallet. Since 2017, the cumulative swap value has exceeded $180 billion with 211 million trades.
The company did not disclose the number of private beta customers who have adopted cross-chain routing or the total amount the beta has generated. This data will likely be the clearest measure of whether the 12-partner launch translates into actual transaction flow.
token disconnection
$ZRXAccording to CoinGecko, the 0x Protocol governance and fees token is trading at $0.0934, ranking 322nd and having a market capitalization of approximately $79 million. The token has fallen about 5% on the day, and is down 96% from its all-time high of $2.50 in January 2018.
Cross-Chain API does not route fees on-chain. $ZRX Under the current model of 0x. The company charges integrators at the API level. This structure means that the start of GA has no direct effect on $ZRX Tokenomics also only expands 0x’s addressable developer market.
