0x is a foundational component for AI agents that need to perform financial transactions autonomously. Because agents operate programmatically rather than through web-based graphical interfaces, they require reliable, high-uptime APIs to execute trades. 0x provides this exact surface, allowing an agent to query liquidity, obtain a price quote, and receive the transaction data required to sign and broadcast a swap without human intervention.
In the agent stack, 0x is an execution tool. It enables agents tasked with treasury management, arbitrage, or automated purchasing to access over 10 million tokens across multiple blockchains. By abstracting the complexity of 150+ different exchanges into a single API, 0x allows agent developers to focus on logic and decision-making rather than the intricacies of blockchain-specific liquidity protocols.
0x is the technical substrate for decentralized trading. While many entities in the blockchain sector focus on building consumer-facing exchanges, 0x has largely focused on the layer beneath the user interface. Founded in 2016, the company produces a suite of APIs and smart contracts that allow developers to embed token swaps directly into any application. This approach treats decentralized liquidity not as a destination, but as a utility that can be integrated into wallets, portfolio managers, and even games.
The core of the current offering is the 0x API. It functions as a liquidity aggregator, scanning hundreds of decentralized exchanges (DEXs) and private market makers to find the most efficient path for a trade. For a developer, this eliminates the need to manually integrate with dozens of disparate protocols like Uniswap, Curve, or Balancer. Instead, a single HTTP request to 0x returns the best available price and the necessary data to execute the transaction on-chain. This model has proven successful for large-scale deployments, with the 0x API powering the swap functionality in MetaMask, Coinbase Wallet, and Robinhood Wallet.
0x began as a protocol-first project. The original 0x Protocol introduced the concept of "off-chain order relay, on-chain settlement." This allowed users to sign orders without paying blockchain gas fees, only incurring costs when the trade was actually finalized on the Ethereum network. This architecture was designed to solve the high costs and slow speeds of early on-chain order books. Over time, the company transitioned its focus toward the 0x API to better serve the growing demand for aggregated liquidity across multiple blockchain networks, including Polygon, BSC, and Avalanche.
To demonstrate the power of its own infrastructure, the team launched Matcha, a decentralized exchange aggregator. Matcha is a clean, consumer-oriented interface that uses the 0x API to find the best prices for users. It serves as both a viable product in its own right and a benchmark for what third-party developers can build using 0x tools. Beyond exchange, the team is responsible for significant technical standards in the Ethereum ecosystem, including contributions to ERC-721, the fundamental standard for non-fungible tokens (NFTs).
0x is backed by prominent venture capital firms including Greylock, Pantera Capital, and Jump Capital, having raised $109 million through its Series B round. This capitalization reflects its status as a critical piece of the DeFi stack. To date, the platform has processed over $125 billion in volume across more than 52 million transactions. While the competitive landscape includes aggregators like 1inch and underlying protocols like Uniswap, 0x differentiates itself through its deep focus on developer experience and its status as a neutral infrastructure provider. The company remains a key player in the push toward a more accessible financial system, providing the plumbing that makes on-chain assets liquid and tradable across the internet.
Liquidity aggregation for DeFi developers.
0X is hiring.