We’re excited to announce that Extended, formerly known as X10, is now live on Starknet mainnet. This marks a major leap forward for both the Extended protocol and the Starknet DeFi ecosystem.
Why Starknet?
Originally deployed on StarkEx, Extended has proven itself as a fast and efficient platform for perpetual trading. But now, it’s entering a new era of composability with Starknet’s growing ecosystem. By migrating to Starknet, Extended takes full advantage of a composable and trustless environment, settling trades directly onchain with the power of STARK proofs. This allows transactions to settle both quickly and cheaply. This is more than just an upgrade; it’s a fundamental change that establishes Extended as a crucial component within Starknet’s expanding DeFi ecosystem.
Extended: Onchain Trading & Cross-Chain Accessibility
For DeFi traders already active on Starknet, Extended offers a powerful new tool to trade onchain. With lightning-fast settlement and direct mainnet deployment, it’s now easier than ever to access deep liquidity, explore diverse trading pairs, and manage capital with more flexibility. And for users who previously traded on Extended via StarkEx, the migration means a better user experience, faster and cheaper withdrawals, and direct access to Starknet-native liquidity.
Extended also opens the door for traders across the broader crypto landscape. With full support for EVM-compatible wallets, anyone can now connect with MetaMask, WalletConnect or a Starknet-native wallet and start to trade with Extended on Starknet. The team is actively building a direct on-ramp from other chains, so users can onboard to the perp DEX without any friction. This approach dramatically lowers the barrier to entry and unlocks new pathways for cross-chain DeFi participation.
Traders can now explore more than 50 perpetual markets on Extended, with leverage numbers available here. And this is just the beginning. Extended is now building the foundation for unified margin logic with integrated lending and spot markets to support non-stablecoin collateral, including yield-bearing assets. Extended also developed onchain vaults, including infrastructure that will eventually support Bitcoin-based Vault strategies on Starknet.
These features aim to create a comprehensive trading hub that merges performance with composability, making Extended not just another perps DEX, but a full-stack DeFi platform for Bitcoin and Ethereum users.
Extended’s perps DEX is not accessible to US users.
Read more about Starknet’s long-term vision for Bitcoin
Starknet: The Future of High-Performance DeFi
Launching on Starknet mainnet is a statement. It reinforces Starknet’s role as a high-performance settlement layer 2 where serious DeFi can thrive. Extended proves that robust, scalable trading protocols can be built without compromising on decentralization, security, or user experience.




