Kuna Labs Zagreb, EU — est. 2021

Deep protocol
engineering on Sui.

We’re the team behind Kai Finance and some of the ecosystem’s most-used developer tools. Smart contracts, infrastructure, and open source — shipped since the first testnet.

See our work Read our writing

2021

Building on Sui since before genesis

$25M+

TVL managed by Kai Finance

40k+

Sui MetaMask Snap installs

2013

Exploring blockchain since

01 Work

Things we’ve built

01 Product

Kai Finance

A leveraged yield platform live on Sui since November 2023 — single-asset vaults and leveraged concentrated-liquidity positions, engineered with formally verified core primitives.

02 Open source

sui-client-gen

The TypeScript SDK generator for Sui Move contracts, backed by a Sui Foundation grant and used across the ecosystem — Polymedia, Suilend, Umi, Degen Hive, and more.

03 Product

Sui MetaMask Snap

Full Sui access for MetaMask’s 30M+ users. Integrated by Wormhole Portal, Cetus, Aftermath, Turbos, Scallop, and Navi.

04 Open source

Token Distribution Protocol

Composable Move building blocks for vesting, liquidity mining, and any token distribution scheme you can express with them.

05 Open source

AMM Smart Contract

One of the first production-grade contracts in idiomatic Sui Move (October 2022) — praised by Move’s creator and studied by a generation of Sui developers.

02 Writing

Notes from the lab

Jan 14, 2026 sui-client-gen v0.5.0 Ready for what's next: enum support, multi-environment codegen, gRPC and GraphQL clients, and an IR-based architecture rewrite. May 30, 2025 Sui Prover — A Smart Contract Developer's Perspective How formal verification fits into real-world smart contract development. Sep 6, 2022 Smart Contract Development — Move vs. Rust An in-depth look into Move, a novel programming language for smart contract development, and how it compares to the existing Rust-based model used on Solana.

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03 Team

Three founders, no filler

Krešimir Klas

Engineering

Ex-Meta. The driving force behind Kuna Labs — known for identifying and mitigating a critical $30M smart contract vulnerability, and for some of the most-cited technical writing on Move.

Twitter ↗

Lovro Vidović

Full-stack

Senior full-stack engineer with a background spanning agency work and Sofascore before going all-in on decentralized applications with Kuna Labs in 2021.

LinkedIn ↗