Uniswap opens Token Jar fee conversion to apps via TJAR
Uniswap Labs says TJAR lets any app convert fees through an open searcher market. Robinhood is first, and Token Jar handled $15.3M last month.
Uniswap Labs has turned its Token Jar from an internal fee mechanism into TJAR, a system any app can use to convert collected fees into one chosen token. Robinhood is the first integrator, receiving USDC and USDG. Uniswap says Token Jar handled more than $15.3 million in conversions last month, a company figure.
The Ledger Desk · 3 min read- Uniswap Labs announced TJAR on 29 October 2026 as an open way for apps to convert accumulated fees into a single token.
- Searchers, not Uniswap, set the market: they pay the app's chosen price in the chosen token to release a jar's contents.
- Robinhood is the first integrator and receives fees from the Uniswap API in USDC and USDG, per Uniswap.
- Uniswap says Token Jar handled more than $15.3M in conversions last month; that is a company-reported figure, not independently verified.
- TJAR is live on seven chains, and Uniswap says more partners will follow; none other has been named.
Uniswap Labs has opened its Token Jar fee-conversion system to other apps under the name TJAR, with Robinhood as the first integrator, according to Uniswap's 29 October 2026 announcement and The Block's coverage. The one hard number comes from Uniswap itself: Token Jar handled more than $15.3 million in conversions last month. The announcement gives no revenue split, and the figure is not independently verified here.
How TJAR converts fees
An app deposits fees into a jar and sets three parameters: the token it wants, the price, and the destination. Per Uniswap, a searcher then pays that price in the chosen token and the jar releases its contents. The jar sets no prices of its own, so searchers decide whether a trade is worthwhile. Uniswap says setup takes a single transaction, and settings can be changed later or locked permanently.
What Robinhood is actually doing with it
Uniswap says Robinhood uses TJAR across its supported chains for fees collected through the Uniswap API, converting them as they arrive and receiving USDC and USDG. For API integrators, the mechanism is to set the jar as the fee recipient in the quote request. That makes Robinhood a live user rather than a pilot, though the sources give no volume specific to Robinhood.
Where the UNI burn fits
The Block reports that when Uniswap itself uses a jar, the payment is made in UNI and sent to a burn address, while other apps choose their own token and destination. Uniswap's governance forum describes the earlier Robinhood Chain proposal as bringing that chain into the existing fee-collection and UNI-burn framework, not a new fee model. TJAR extends the same mechanism to outside apps.
What to watch
Three things will show whether TJAR is infrastructure or a one-partner feature. First, whether Uniswap names further integrators; it says more are coming. Second, whether conversion volume beyond the $15.3 million figure is published for outside apps. Third, whether governance sets the optional protocol fee on TJAR, which none currently applies. Onchain data and governance records are the checks on each.
- What is TJAR?
- TJAR is Uniswap Labs' onchain fee-conversion system for apps. Apps deposit fees into a token jar, set a target token, price and destination, and searchers pay that price to release the contents.
- How does Robinhood use TJAR?
- Per Uniswap, Robinhood uses TJAR across its supported chains for fees collected through the Uniswap API. Fees are converted as they arrive, and Robinhood receives them in USDC and USDG.
- Does Uniswap take a fee on TJAR?
- Per The Block's reading of Uniswap's announcement, Uniswap DAO governance can set an optional protocol fee on TJAR, but none is currently set. That could change by governance vote.
- Uniswap Labs opens fee conversion tool TJAR to apps, starting with Robinhood — The Block
- TJAR: onchain fee conversion for any app — Uniswap Labs
- [Temp Check] Protocol Fee Expansion: Robinhood Chain — Uniswap Governance Forum