Across Protocol vs Hyperliquid TypeScript SDK

Across Protocol

Across Protocol is the leading intent-based cross-chain bridge, connecting over 15 chains — including Hyperliquid's HyperCore and HyperEVM — with near-instant settlement and some of the lowest fees in DeFi. Unlike traditional message-passing bridges, Across replaces step-by-step execution with user-declared outcomes called intents: users specify what they want, and a competitive network of relayers races to fulfill each transfer optimally. Backed by a three-layer architecture — a request-for-quote mechanism, a network of competitive relayers, and an on-chain settlement layer — Across guarantees fast fills averaging under one minute without sacrificing security or decentralization. Bridging 1 ETH costs under $1. The protocol has processed over $22B in cumulative volume across 15M+ transactions, making it one of the most proven interoperability solutions in production. For the Hyperliquid ecosystem, Across unlocks seamless capital inflows from Ethereum, Arbitrum, Base, Optimism, and beyond — giving users and protocols a reliable, low-cost on-ramp to both HyperCore's order-book liquidity and HyperEVM's growing DeFi landscape.

The Hyperliquid TypeScript SDK is a comprehensive, community-maintained client library for the Hyperliquid API, supporting all major JavaScript runtimes including Node.js, Deno, Bun, and browser environments. Written in TypeScript with full type coverage, the SDK provides ergonomic abstractions for REST API calls and WebSocket subscriptions, making it easy to build Hyperliquid integrations in the web ecosystem. The library handles authentication, request signing, WebSocket reconnection logic, and response parsing—letting developers focus on business logic rather than protocol details. It supports the full Hyperliquid API surface including order management, account queries, market data streaming, and HyperEVM interactions. With active maintenance and growing adoption in the developer community, this SDK is the standard choice for frontend applications and Node.js trading systems interfacing with Hyperliquid, bridging the gap for JavaScript developers entering the ecosystem.

Choose Across Protocol if you...

• ✓Want a bridges & cross-chain solution on Multi-Layer
• ✓Prefer a verified and vetted protocol
• ✓Need features like bridge and intent-based
• ✓Need: Intent-based cross-chain bridge — near-instant USDC bridging to Hyperliquid

Choose Hyperliquid TypeScript SDK if you...

• ✓Want a sdks & developer tools solution on Multi-Layer
• ✓Need: Community TypeScript SDK for Hyperliquid supporting all major JS runtimes