[Uniswap API Accounts for Approximately 40% of MetaMask's Trading Volume After Integration] BlockBeats news, on April 7, Uniswap founder Hayden Adams tweeted that the Uniswap API, after being integrated into MetaMask's aggregated trading routing system a month ago, now accounts for approximately 40% of its swap transaction volume. He also stated that Uniswap has made the API key freely available to all developers.