How Solid Leverages the Fuse Stack

Nov 17, 2025

Unlocking next-gen DeFi experiences through vertical integration

When we set out to build Solid, we knew exactly what we wanted: seamless user experience, zero friction, and the kind of robust security usually reserved for institutions. Achieving this meant finding the right foundation, one scalable enough to support our ambitions, yet flexible enough to control every detail of the user journey. That foundation is Fuse.

Solid isn’t just another DeFi app. It’s built on six years of Fuse’s infrastructure development, an Ethereum Layer-2 ecosystem where we’ve carefully assembled core building blocks: wallets, relayers, APIs, a DEX, and more. Now, we’re vertically integrating these legos into one unified experience that delivers secure, fast, and gasless transactions.

Most DeFi platforms are patchworks of third-party protocols. This often results in high fees, complex interfaces, and frustrating user experiences. Fuse solves this by providing everything Solid needs under one roof:

The chain (L2 with instant finality) & Ethereum L1
The accounts (smart wallets, no seed phrase)
The middleware (gasless relayers, subgraphs, APIs)
Yield Engine & trading engine (Algebra ,Voltage ,Veda)
The app infrastructure (explorers, notifications, and more)

This lets us deliver a seamless, gasless, multi-device experience that feels more like a fintech app than a DeFi protocol.

Account Abstraction Done Right

Solid simplifies every interaction through ERC-4337 account abstraction. There are no seed phrases, no bridges, and no signing fatigue.

This experience is made possible by several core technologies:
SAFE powers smart accounts, offering users the security of a multisig setup by default.
Turnkey enables biometric login and passkey-based access, delivering a secure, keyless, and intuitive onboarding experience.
Pimlico provides the underlying infrastructure that ties it all together. It supplies the paymaster that enables gasless transactions, the bundlers that ensure seamless on-chain execution, and full ERC-4337 support for smart, self-custodial accounts.

The result is a smooth, secure experience that feels more like using a modern fintech app than a traditional DeFi wallet. Everything just works without passwords, complexity, or friction.

Optimized for Yield and Stability

Fuse was built for real-world payments and business use cases. That means stability, uptime, and cost-efficiency were part of the DNA from day one.

For Solid, this gives us:

Reliable performance for vault execution and monitoring
Fast indexing of user activity and vault positions
Wholesale gas pricing makes Fuse the ideal home for consumer apps like Solid, so fees stay low and more of the yield goes back to the user.
Custom logic is baked into the vault layer thanks to full-stack access

Beyond Dollars: A Full Financial Suite

Solid’s vision is bigger than a simple yield vault. It’s designed to be your entire financial hub, enabling you to:

Earn yield on a variety of assets (ETH, BTC, stocks, and more).
Spend your yield directly with the Solid Card (coming soon).
Swap, trade, and manage your portfolio without gas or bridges.
Leverage assets through upcoming lending and collateralization features including support for non-crypto assets like Tesla, Gold, and other tokenized commodities.

With Fuse, these features seamlessly integrate into one app, creating an accessible and complete financial experience.

The Road Ahead

Solid is just getting started. Powered by Fuse’s scalable and flexible stack, we’re set to roll out features that blur the line between finance and everyday life:

Support for more assets like Ethereum, Bitcoin, ETFs, and tokenized stocks (e.g., Tesla, Gold)
Lending, borrowing, and advanced portfolio strategies
Enhanced trading tools and seamless portfolio management
A gamified experience with quests, points, and referrals built directly into the app

This isn’t just about removing friction, it’s about making finance feel intuitive and fun. Yield isn’t a feature, it’s the foundation. Solid turns passive income into a playful, rewarding journey that anyone can join.

Solid: built differently, thanks to Fuse.
Ready to experience it firsthand?

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