Advanced onchain trading, institutional-grade execution
Advanced onchain trading, institutional-grade execution Definitive uses 0x Swap API to deliver the best all-in prices on trades up to $1.8M with near-zero revert rates. As the #1 aggregator in Definitive’s multi-vendor stack, 0x won 43% of all swaps and outperformed 1inch by 7.8x over the last 12 months.
1 day
to integrate
2.5
years as partners
280%
trade growth YoY
The Challenge
Professional execution for advanced traders
Definitive is an advanced onchain trading platform that serves pro-traders, institutions, and hedge funds through gasless, multi-chain trading. Delivering the best execution for every trade is core to Definitive's product promise, so 0x helped solve for three crucial problems:
Fragmented liquidity across chains and venues
Fast growth of tokens, DEXs, and chains, meant Definitive needed an aggregation layer built for complexity, delivering deep liquidity across AMMs and professional market makers.
Hidden costs erode execution quality
Slippage, gas, and MEV can degrade the price a trader actually receives. Settling for best all-in price instead of quotes avoids leaving advanced traders short-changed.
Reliability across trade sizes
For traders executing a hundred thousand dolalrs or more, a single failed transaction is unbearably costly. On average, 8–10% of DEX transactions fail, so provider reliability is key.
Definitive needed an aggregation partner with deep multi-chain coverage, competitive all-in pricing backed by simulation, and the kind of rock-solid execution that can handle variable trading conditions. Definitive is now integrating 0x Cross-Chain and Solana API in beta — expanding coverage to any token, any chain.
The Solution
Advanced routing for best all-in prices
0x Swap API gives Definitive an institutional-grade trade execution layer:
Trades split for deepest liquidity
Slippage-free, MEV-resistant pricing
Gas-aware execution for accuracy
Wide coverage on 18 chains and 373+ exchanges
As we push the envelope on advanced trade execution, we chose 0x as a key partner because of their stellar track record in onchain routing and execution. We trust the reliability of their infrastructure and ability to stay ahead of the curve in terms of multi-chain surface area and liquidity coverage. 0x consistently offers very competitive quotes on Definitive.
Blake Arnold
Co-Founder and CTO, Definitive
Looking forwards
Why 0x is right for agent-native platforms
1. Execution quality that pros demand
0x delivers execution that adapts to liquidity conditions in real time, across the full spectrum of trade sizes. Keep your whales coming back without neglecting the mid-range volume that makes up the majority of trading activity.
2. Best all-in prices validated by simulation
0x consistently returns competitive settled outcomes, not inflated quotes. Definitive also simulates all aggregator quotes in the same block to ensure a fair, gas-inclusive comparison.
3. Deep multi-chain liquidity from a single integration
373+ exchanges across 18 chains. Access the full surface area of AMMs and professional market makers together through one API, without managing multiple vendors.
4. MEV protection and near-zero revert rates
Access zero-slippage pricing with 0x RFQ, and gas-aware routing that minimizes revert rates. Overall, 99% of Definitive trades execute at or better than the quoted price.
5. Fast, simple integration
0x Swap API fits into your existing routing stack in just a few lines of code without disruption. Definitive's team completed integration in a single day, from first API call to live production trading.
The Results
14,025
token pairs traded
0x allowed Definitive to provide traders with high-quality execution across millions of token pairs with competitive quotes that consistently win.
Single day
production integration
The fastest aggregator integration in Definitive's stack.
Measurable improvements
Even in trades of correlated pairs. Swapping WBTC for cbBTC through 0x on Definitive yielded 0.2% more cbBTC than Uniswap.
Advanced execution infrastructure for your trading platform
0x powers execution for Definitive, Matcha, Coinbase, and Robinhood — platforms where all-in price and execution reliability directly impact the bottom line. When your team needs institutional-grade swap infrastructure, bring 0x into your routing stack.
Contact usWe can help you:
Reduce revert rates and failed swaps on complex token types
Improve settled outcomes across your core volume brackets
Add a proven execution layer alongside what you're already running