Skip to content
ChainBrief

News from across Web3

Uniswap opens TJAR fee conversion to apps, with Robinhood first

Uniswap Labs opened TJAR to apps across seven chains, letting searchers convert mixed-token fees into a chosen asset; Robinhood receives USDC and USDG.

The ChainBrief Editors

Uniswap opens TJAR fee conversion to apps, with Robinhood first

Onchain apps can collect fees in many different tokens across multiple chains.

Uniswap Labs opened its Token Jar fee conversion system, called TJAR, to other apps on October 29, naming Robinhood as its first integration partner. In its TJAR announcement, Uniswap Labs said the system is live on seven chains and allows teams to receive fees in a token they choose.

TJAR gives apps a shared onchain route for consolidating fee revenue without building their own conversion infrastructure.

How does TJAR convert fees?

An app deposits incoming fees into a Token Jar and configures the token it wants to receive, the amount a searcher must pay, and where that payment should go. A searcher who accepts the offer pays the configured amount through a Releaser contract; the jar then releases its contents to that searcher, according to The Block’s report on the launch.

The jar does not price each asset separately. Instead, the operator sets a fixed amount of its chosen token in exchange for the accumulated contents, and searchers decide whether the trade is worthwhile. The chosen token can be routed to a destination such as a treasury, bridge, or burn address, Uniswap Labs said. Operators can change the token, price, and destination, or lock those settings permanently.

What is Robinhood receiving?

Robinhood is already using TJAR across its supported chains for fees collected through the Uniswap API, Uniswap Labs said. Those fees are converted as they arrive, and Robinhood receives USDC and USDG from its jars.

The integration uses an existing Uniswap API workflow: integrators can set a Token Jar as the fee recipient in a quote request. Uniswap Labs said the same setup can serve apps, hooks, chains, and API integrations that collect fees.

What does the launch build on?

The Token Jar framework was first built for Uniswap Protocol fees. Uniswap Labs said it processed more than $15.3 million in conversions in September, before the system was made available to other teams through TJAR.

The expansion turns that existing mechanism into infrastructure other projects can configure for their own fee flows. For Robinhood, that means fees collected through the Uniswap API can arrive in two selected stablecoins; other teams can choose a different token and destination. Uniswap Labs said more chains are planned beyond the seven supported at launch.

Sources