Need free API provider to access Market Index banner (DJIA, S&P 500, Nasdaq, U.S. 10Yr, etc.), as well as the Fed’s Fund Rate

Question

One of my customer ask for inserting Market Index banner (DJIA, S&P 500, Nasdaq, U.S. 10Yr, etc.) on top of his website like as you see on wsj.com , as well as the Fed’s Fun