⚡
Simple Integration
One SDK call to send messages to any chain. No complex bridge integrations, no chain-specific logic.
ArbiLinkUniversal Cross-Chain Messaging
Build once on Arbitrum. Connect to everywhere.
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Quick Example
Send a cross-chain message in 3 lines:
typescript
import { ArbiLink } from '@arbilink/sdk';
const arbiLink = new ArbiLink(signer);
const messageId = await arbiLink.sendMessage({
chainId: 11155111, // Ethereum Sepolia
target: '0x742d35Cc6634C0532925a3b8BC454e4438f44e',
data: encodedFunctionCall,
});
// Watch delivery in real time
arbiLink.watchMessage(messageId, (msg) => {
console.log(msg.status); // 'pending' → 'relayed' → 'confirmed'
});Why ArbiLink?
❌ Without ArbiLink
- • Deploy same dApp on every chain
- • Manage N deployments & N audits
- • Complex bridge integrations per chain
- • $4.50+ per message
- • Weeks of cross-chain plumbing
- • Users fragmented across ecosystems
✅ With ArbiLink
- ✓ Build once on Arbitrum
- ✓ One codebase, one security audit
- ✓ One SDK call:
sendMessage() - ✓ ~$0.23 per message (95% cheaper)
- ✓ Integrate in hours, not weeks
- ✓ Reach all chains from one place
Start in 5 Minutes
⚡ Quick Start
Install the SDK and send your first cross-chain message
💻 Code Examples
Real-world NFT, token, and DAO examples ready to copy
📚 SDK Reference
Complete API documentation with full TypeScript types
🗺️ Guides
Step-by-step walkthroughs for common cross-chain patterns
How It Works
ArbiLink uses an optimistic delivery model powered by Arbitrum Stylus:
Your dApp (Arbitrum) → sendMessage() → MessageHub.sol (Stylus/Rust)
↓
Relayer Network detects MessageSent event
↓
Relayer calls receiveMessage() on destination chain
↓
ArbiLinkReceiver.sol executes your target contract
↓
5-min challenge window → delivery confirmed → stake returned
↓
Relayer Network detects MessageSent event
↓
Relayer calls receiveMessage() on destination chain
↓
ArbiLinkReceiver.sol executes your target contract
↓
5-min challenge window → delivery confirmed → stake returned
- Send — call
arbiLink.sendMessage()on Arbitrum Sepolia - Relay — a staked relayer picks up the
MessageSentevent - Execute — relayer calls
ArbiLinkReceiver.receiveMessage()on the destination - Confirm — after the challenge window, delivery is finalized on Arbitrum
Built on Arbitrum Stylus
The MessageHub contract is written in Rust and compiled to WASM via Arbitrum Stylus, giving:
- 10× cheaper gas than equivalent Solidity
- Memory-safe execution environment
- Native Arbitrum integration with minimal overhead