Uniswap just turned its fee bucket into a product, and Robinhood is the first customer.
TJAR, opened to any app Oct. 29, fixes the problem of getting paid in a thousand random tokens across chains. Fees pile up in a Token Jar. The app posts a fixed price in the one token it actually wants. Once the jar is worth more than that, a searcher pays the price and walks off with the contents.
Uniswap built it for its own protocol fees, where it handled over $15.3M in conversions in September. Robinhood's jars pay out in USDC and USDG. OpenZeppelin-audited, live on seven chains.
The jar doesn't price anything, so a low price plus one big deposit is a gift to whoever's fastest. Uniswap's own docs say so.
Finally, a tip jar where the tip goes to the customer.
Source: Uniswap blog