0x Protocol vs Core API vs Connext
Build an ecosystem optimized for your goals while opening up new revenue streams.
Comparison Summary
0x Protocol, Core API and Connext each address unique challenges in the web3 ecosystem, offering complementary strengths for builders. 0x provides battle-tested APIs and smart contracts to enable fast, efficient, and composable decentralized crypto trading across multiple chains. A Document Object Model for Web APIs designed to simplify API consumption and integration. Connext is a secure, fast modular interoperability protocol enabling cross-chain fund bridging and asynchronous Solidity development. Together, these tools serve different but overlapping user needs, making them valuable components in a modern web3 development stack.
| At a Glance | |||
| Composability | |||
| Cross-Chain | |||
| Customizability | |||
| Developer Support | |||
| Ease of Integration | |||
| Performance | |||
| Key Features | |||
| Core Capabilities | Swap API, Gasless API, Trade Analytics API, Multi-chain support, Monetization options | Dynamic API Discovery, Open Source Repositories | xCall Primitive, xERC20 Tokens, Cross-Chain Restaking |
| Chain Support |  |    +40 |   +5 |
| Best For | DeFi Developers, Infrastructure Developers | Infrastructure Developers, DeFi Developers | DeFi Developers, Infrastructure Developers |
| Pricing | |||
| Free Tier | Starter | — | Standard |
| Paid Features | 1 paid tiers | — | — |
| Custom Plans | — | — | — |
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