Zach Anderson
Mar 18, 2026 20:00
Uniswap (UNI) v2, v3, and v4 launch on Tempo with first-ever aggregator hooks deployment, enabling AI agent payments via Machine Payments Protocol integration.
Uniswap (UNI) has launched its entire protocol suite—v2, v3, and v4—on Tempo, the payments-focused blockchain incubated by Stripe and Paradigm. The deployment marks the first live use of v4’s aggregator hooks, a feature that could reshape how decentralized exchanges tap external liquidity sources.
UNI traded at $3.86 at time of writing, down 4% over 24 hours amid broader market weakness.
Why Tempo Matters for Uniswap
Tempo isn’t just another EVM chain. Built specifically for stablecoin payments, it boasts sub-second finality and claims capacity exceeding 100,000 transactions per second. Design partners include Visa, Mastercard, Deutsche Bank, and Shopify—names that signal serious institutional interest in blockchain payment rails.
The architecture creates an interesting division of labor. Tempo runs its own native DEX for stable-to-stable pairs like USDC.e to USDT0. Uniswap handles everything else, serving as the liquidity layer for all non-stablecoin assets.
Here’s where it gets technically interesting: an aggregator hook wraps Tempo’s stablecoin DEX as a set of v4 pools. Developers making a single Uniswap API call can access both liquidity sources in one swap. Stablecoin trades route through Uniswap but settle on Tempo’s native DEX, while other assets settle directly on Uniswap pools.
First Live Aggregator Hooks Deployment
This represents the first production deployment of aggregator hooks, a v4 primitive Uniswap introduced when the protocol launched on January 30, 2025. The hooks system lets developers turn any external liquidity source into what functions as a Uniswap pool—a significant expansion from v3’s more rigid architecture.
Uniswap says aggregator hooks will roll out to additional chains with support for more liquidity sources, though no timeline was provided.
AI Agent Payment Integration
Perhaps the most forward-looking element: Tempo launches with its Machine Payments Protocol, designed for autonomous agent-to-agent transactions. Uniswap built a “pay-with-any-token” skill that solves a practical problem—when an AI agent encounters a payment request for a token it doesn’t hold.
The skill automatically swaps into the required token via Uniswap’s API, then retries the payment. Developers can install it with a single command: ‘npx skills add uniswap/uniswap-ai –skill pay-with-any-token’.
It’s a bet that autonomous agents will need DeFi infrastructure, and Uniswap wants to be the default swap layer when they do.
Developer Access
The Uniswap API supports Tempo from day one, handling gas estimation, slippage calculation, and routing across both liquidity sources. Existing API integrations work automatically. New developers get access to liquidity across 18+ chains with no upfront costs or per-trade fees.
Uniswap Web App and Wallet support for Tempo are listed as “coming soon.”
For traders watching UNI, the Tempo deployment extends Uniswap’s reach into institutional payment infrastructure—territory that could matter significantly if Stripe’s backing translates into actual payment volume from traditional finance partners.
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