Uniswap Labs announced on October 29, 2026, the release of TJAR, a permissionless infrastructure that converts an application’s onchain fees into a single chosen token. Robinhood is the first integration partner, with additional partners expected to follow.
Applications that charge fees are typically paid in whatever tokens users trade, leading to accumulation of thousands of different tokens across multiple chains. TJAR replaces custom conversion infrastructure with an open market: apps deposit fees into a Token Jar, searchers compete to convert them, and the app automatically receives fees in its chosen token.
The Token Jar framework was originally built for Uniswap Protocol fees. In September, Token Jar handled more than $15.3 million in conversions. TJAR is now live on seven chains, and documentation, deployment addresses, and guides are available on the Uniswap Developer Platform.
Robinhood is already using TJAR to convert fees collected through the Uniswap API across multiple networks into the stablecoins USDC and USDG. Through this system, each application specifies the token it wants to receive and the required amount. External participants known as searchers can pay that amount through a contract called Releaser and receive the deposited assets in exchange. The system does not automatically assign individual prices; searchers decide whether to accept conversion terms.
Uniswap uses this mechanism to receive UNI and send it to a burn address. Other platforms can select different tokens and determine where funds are received, and settings can be changed or permanently locked. Protocol governance may introduce an additional fee in the future, but none is currently in place.
Uniswap Labs is a core contributor to the Uniswap Protocol, the world’s largest decentralized exchange, with more than $4.7 trillion in all-time trading volume. The company said more integration partners will follow Robinhood.
