Brian HuangCo-founder, Glider
"ZeroDev was the clear choice. ZeroDev gave us production-ready infrastructure from day one."
UltraRelay
Remove gas from the critical path
UltraRelay helps teams sponsor fees, support flexible gas payments, and keep smart account transactions moving without forcing users to acquire native tokens first.
Why It Matters
Gas should not block the moment of action
Users should not have to stop, bridge, swap, or acquire native tokens before they can use your product. UltraRelay helps teams move transaction costs into the background so onboarding, trading, deposits, and repeat actions can feel immediate.
Gasless UX
Sponsor gas for first-time users, repeat users, or high-value actions
No Bridging
Let users pay fees with assets they already hold
Reduce User Drop-off
Reduce drop-off in conversion-critical transaction flows
How It Works
One layer for sponsorship, payment, and execution
UltraRelay brings the pieces required to sponsor, price, and execute smart account transactions into one production-ready layer. Teams can design gas experiences around the product flow instead of stitching together separate paymaster and execution services.
Sponsor transaction fees directly
Let users pay fees their way
Align execution with smart accounts, permissions, and orchestration
Product Benefits
A better fee experience for users and operators
Gas sponsorship is a product and economics lever. UltraRelay helps teams reduce first-use friction, control sponsorship rules, and create more predictable transaction experiences.
Instant Activation
Remove the need for native-token setup at the moment of action
Latency Shield
Reduce transaction delays with relay infrastructure built for speed-sensitive embedded wallet and fintech flows.
Sponsorship Policies
Support policy-driven approaches to when sponsorship is allowed
Built for teams that need more than a paymaster endpoint
UltraRelay is strongest as part of the ZeroDev smart account stack. Embedded wallets, permissions, policies, and orchestration all become easier to operate when sponsorship and execution are designed to work together from the start.
Testimonials
Trusted by more than 300 apps
David SneiderCo-founder and Project Lead, Lit Protocol
"Integration with ZeroDev as the smart account of choice was an easy decision."
Luc LojaCEO, Offramp
"ZeroDev’s documentation and team support made all the difference. Whenever we hit a roadblock, we got immediate help."
Blog
Blog Posts & Press Releases
Developers11 min read
The EOA Transition: An In-Place Path to Native AA
ERC-4337 and Kernel proved that programmable accounts can work. The next step is native account abstraction that lets existing EOAs replace their root authorization without abandoning the address, assets, approvals, and history users already rely on.
August 18, 2026
Developers11 min read
Kernel v1–v4: What Production Kept and What It Left Behind
Across four versions, Kernel evolved from an EOA-shaped smart account into a modular foundation for replaceable validation, permissions, and EIP-7702. Its history reveals which account abstraction capabilities became durable products, and which still need better packaging.
August 13, 2026
Developers9 min read
ERC-4337 : Final, Not Finished
A builder’s retrospective on what ERC-4337 proved in production: less a path to mass smart-account migration, and more a shared rail for gas sponsorship, embedded onboarding, and programmable accounts.
August 12, 2026
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Make gas friction disappear from the product story
If users are still thinking about gas, the experience is doing too much work in the open. UltraRelay helps move that complexity where it belongs.
