0x Protocol (a DEX aggregator API that has routed $180 billion in swap volume since 2017) opened its Cross-Chain API to general availability on Wednesday. Twelve bridge providers are live from day one and accessible via 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. The API delivers routes with an average bridge time of 10 seconds and a quote response of less than 750 milliseconds, per 0x product page. The company reports an uptime of 99.97% on the underlying infrastructure.
For developers, the field is consolidation. A wallet or app already on 0x’s Swap API can enable cross-chain routing without adding vendors or writing bridge-specific error handling. 0x monitors routes in real time and switches providers if one is downgraded.
The competitive framework
Cross-chain swaps are a contentious market. 1inch launched its Fusion+ cross-chain order flow product in 2024. LayerZero, Wormhole and Across each run on native bridging stacks with direct developer APIs. These protocols typically require the developer to choose and maintain a specific bridge. 0x positions its API as the layer that takes away this decision.
Across Protocol, which uses an optimistic oracle to guarantee fast bridge fills, handled more than $15 billion in bridge volume in 2025. LayerZero facilitates OFT standard token transfers; Stargate is the main consumer-facing application. Both protocols are now listed as partners in the 0x Cross-Chain API – meaning 0x merges competitors rather than completely replacing them.
From private beta to GA
The Cross-Chain API entered private beta on February 25, 2026, with a subset of bridge partners. Wednesday’s announcement removes the invite gate and expands the partner set to 12. 0x has a swap infrastructure for Coinbase Developer Platform, MetaMask, Phantom, Robinhood Wallet and Trust Wallet, according to the company’s blog. Cumulative swap volume has exceeded $180 billion across 211 million transactions since 2017.
The company did not disclose how many private beta customers went live with cross-chain routing, or what total volume the beta produced. That data would be the clearest measure of whether the 12-partner launch translates into real transaction flow.
Token disconnect
$ZRXthe governance and fee token for 0x Protocol, is trading at $0.0934, a market cap of approximately $79 million at rank #322, per CoinGecko. The token is down about 5% on the day and 96% from its all-time high in January 2018 of $2.50.
The Cross-Chain API does not forward any costs on-chain $ZRX under the current model of 0x; the company charges integrators at the API level. That structure means that the launch of the GA has no direct impact $ZRX tokenomics, even as it expands 0x’s addressable developer market.