# LI.FI

*Cross-chain bridge and DEX aggregation.*

LI.FI is cross-chain bridge, DEX, and liquidity aggregation infrastructure that routes swaps and transfers along the best available path across many third-party bridges and DEXs, exposed through one API, SDK, and Widget. In the Tempo ecosystem it acts as cross-chain liquidity infrastructure, with Tempo added to its supported chains around March 2026 to route value into the stablecoin payments network.

## At a glance

- **Type:** infrastructure
- **Category:** bridges
- **Status:** active
- **Website:** https://li.fi

## Key facts

- **Category:** Cross-chain bridge, DEX, and liquidity aggregation infrastructure — a routing layer, not a wallet, exchange, or single bridge. _(confidence 95%)_
- **How it works:** Aggregates many third-party bridges and DEXs and routes each swap or cross-chain transfer along the best available path, abstracting individual integrations away from the app. _(confidence 90%)_
- **Developer interface:** Exposed to apps through a single API, SDK, and embeddable Widget, so one integration covers many bridges and DEXs. _(confidence 85%)_
- **GitHub:** Open-source under the github.com/lifinance organization, with public repos including the SDK, widget, and contracts. _(confidence 90%)_
- **Tempo chain ID:** Tempo Mainnet uses chain ID 4217 for wallet and routing integrations. _(confidence 95%)_
- **Tempo fee model:** Tempo has no native gas token; transaction fees are USD-denominated and paid in stablecoins (TIP-20 tokens). _(confidence 98%)_

## Sources

1. [https://li.fi](https://li.fi)
2. [https://docs.li.fi](https://docs.li.fi)
3. [https://docs.li.fi/sdk/chains-tools](https://docs.li.fi/sdk/chains-tools)
4. [https://github.com/lifinance](https://github.com/lifinance)
5. [https://docs.tempo.xyz/quickstart/connection-details](https://docs.tempo.xyz/quickstart/connection-details)
6. [https://docs.tempo.xyz/quickstart/evm-compatibility](https://docs.tempo.xyz/quickstart/evm-compatibility)

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Last reviewed: 7 Jun 2025  
Canonical: https://tempo.dataos.so/entity/li-fi  
Source: tempowiki (https://tempo.dataos.so) — an independent, sourced reference for the Tempo ecosystem. Not affiliated with Tempo, Stripe, or Paradigm.