Building Cross-Chain Applications on Telos with LI.FI

As the blockchain ecosystem has evolved, one reality has become clear: users and liquidity are multi-chain. Applications that exist only within a single ecosystem often face fragmentation, poor liquidity access, and friction for users trying to move assets across networks.

This is where LI.FI comes in.

LI.FI provides a cross-chain routing and bridging infrastructure that allows developers to move tokens between chains using the most efficient route available. With Telos expanding its cross-chain connectivity and preparing deeper integrations around privacy and interoperability, LI.FI becomes a powerful tool for developers building on the network.

This guide covers:

• What LI.FI is
• Why it matters for Telos developers
• How to integrate LI.FI into applications on Telos
• Practical use cases

What is LI.FI?

LI.FI is a cross-chain liquidity aggregation protocol that routes token transfers across bridges and DEXs to find the best path between networks.

Instead of integrating with multiple bridges and swap protocols individually, developers can integrate once with LI.FI and gain access to a wide range of liquidity sources.

In practice, LI.FI can:

• Bridge assets between chains
• Swap tokens during a bridge
• Route across multiple protocols
• Optimize for cost, speed, or slippage

For example, moving USDC from one chain to Telos might involve:

1. Swapping on a source DEX
2. Bridging through a cross-chain protocol
3. Swapping again on the destination chain

LI.FI automatically calculates the best route across these steps.

Why LI.FI Matters for Telos

Telos is positioning itself as an ecosystem that combines:

• High-performance EVM infrastructure
• Cross-chain liquidity
• Privacy-focused applications

For developers, this means applications should not assume users already hold assets on Telos.

LI.FI solves the onboarding and liquidity problem by allowing applications to bring assets from anywhere.

Key benefits for Telos developers:

1. Frictionless User Onboarding

Users can enter Telos applications directly from other chains.

Instead of telling users to:

• Bridge assets
• Swap tokens
• Then interact with your dApp

You can allow them to complete all steps in one transaction flow.

2. Access to Global Liquidity

By integrating LI.FI, your Telos application can access liquidity from across the crypto ecosystem rather than relying solely on local pools.

This is especially important for:

• New DeFi protocols
• Low liquidity tokens
• Cross-chain yield strategies

3. Critical Infrastructure for Privacy Workflows

Many privacy architectures require multiple transaction steps across chains.

For example:

1. User swaps assets on another chain
2. Bridges to Telos
3. Enters a privacy system
4. Withdraws elsewhere

LI.FI enables developers to automate and bundle these flows, reducing friction and protecting user privacy by minimizing manual steps.

Integrating LI.FI with a Telos Application

LI.FI offers SDKs and APIs that allow developers to easily integrate cross-chain routing.

The typical integration flow looks like this:

Step 1: Install the SDK

npm install @lifi/sdk

Step 2: Initialize the SDK

import { createConfig, getQuote } from '@lifi/sdk'

createConfig({
  integrator: 'your-dapp-name'
})

Step 3: Request a Route

To move tokens to Telos, request a quote for the best route.

const quote = await getQuote({
  fromChain: 8453,
  toChain: 40,
  fromToken: '0x...',
  toToken: '0x...',
  fromAmount: '100000000'
})

In this example:

• fromChain = source network
• toChain = Telos EVM (Chain ID 40)

The response includes:

• Bridge route
• Expected output
• Fees
• Estimated time

Step 4: Execute the Route

Once the route is selected, you can execute the transaction using the SDK or smart contract interaction.

import { executeRoute } from '@lifi/sdk'

await executeRoute(route)

LI.FI will coordinate the swaps and bridging required to complete the transfer.

Example Use Cases on Telos

Cross-Chain DeFi Deposits

A lending protocol on Telos could allow users to deposit assets from any chain.

Example flow:

1. User deposits USDC on another chain
2. LI.FI routes the bridge
3. Funds arrive on Telos
4. Deposit executes automatically

The user experiences a single transaction flow.

Privacy Entry Points

Privacy systems often benefit from cross-chain entry routes.

Users could:

• Bridge assets to Telos
• Enter a privacy layer
• Withdraw elsewhere

By integrating LI.FI, developers can automate the bridge into privacy pools, improving usability and privacy guarantees.

Cross-Chain NFT Marketplaces

NFT marketplaces on Telos could accept payment from multiple chains by routing payments through LI.FI before settlement.

This expands the potential buyer base dramatically.

Best Practices for Developers

1. Display Route Transparency

Always show users:

• Estimated fees
• Bridge protocol used
• Expected completion time

This builds trust in cross-chain transactions.

2. Handle Edge Cases

Cross-chain transactions involve more complexity than simple swaps.

Be prepared for:

• Partial fills
• Bridge delays
• Gas estimation issues

LI.FI provides status tracking tools that can help manage these scenarios.

3. Use Relayers When Possible

Relayers can abstract gas costs and make cross-chain UX smoother.

This is particularly useful for onboarding new users into Telos.

The Role of LI.FI in the Telos Ecosystem

Cross-chain infrastructure is becoming a core primitive of modern blockchain applications.

With LI.FI integrated into the Telos ecosystem, developers gain access to:

• Cross-chain liquidity routing
• Simplified bridging infrastructure
• Multi-chain onboarding

For builders, this means your application can reach users across the entire crypto ecosystem while executing on Telos.

If you’re building on Telos today, integrating LI.FI is one of the most effective ways to ensure your application is accessible, liquid, and interoperable from day one.

Key Links for Developers

If you’re interested in building cross-chain applications on Telos using LI.FI, the following resources will help you get started quickly.

LI.FI Documentation

• Docs Home: https://docs.li.fi/
• SDK Overview: https://docs.li.fi/sdk/overview
• API Reference: https://docs.li.fi/li.fi-api/li.fi-api

The documentation explains how to request routes, execute cross-chain transactions, and manage transaction lifecycle events using LI.FI’s infrastructure.