> For the complete documentation index, see [llms.txt](https://docs.butternetwork.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.butternetwork.io/butter-swap-integration.md).

# Butter Swap Integration

- [Introduction](https://docs.butternetwork.io/butter-swap-integration/introduction.md)
- [Integration Guide](https://docs.butternetwork.io/butter-swap-integration/integration-guide.md)
- [Contract Interface](https://docs.butternetwork.io/butter-swap-integration/integration-guide/router-interface.md)
- [Fee](https://docs.butternetwork.io/butter-swap-integration/integration-guide/swap-fee.md)
- [Deployed Contracts v3](https://docs.butternetwork.io/butter-swap-integration/deployed-contracts-v3.0.md)
- [v2 (deprecated)](https://docs.butternetwork.io/butter-swap-integration/deployed-contracts-v3.0/deployed-contracts-v2.1.md)
- [API for Routing](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-routing.md)
- [GET /route](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-routing/get-route.md)
- [GET /swap](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-routing/get-swap.md)
- [GET /supportedChainInfo](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-routing/get-supportedchaininfo.md)
- [GET /findToken](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-routing/get-findtoken.md)
- [Error Code List](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-routing/error-code-list.md)
- [API for Swap Data](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-swap-data.md)
- [GET Swap History by Source Hash](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-swap-data/get-swap-history-by-source-hash.md)
- [GET Swap History by Source Address](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-swap-data/get-swap-history-by-source-address.md)
- [GET Swap Info by Order ID](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-swap-data/get-swap-info-by-order-id.md)
- [GET Supported Chain Detail List](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-swap-data/get-supported-chain-detail-list.md)
- [GET Supported Token Detail List](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-swap-data/get-supported-token-detail-list.md)
- [API for Analytics](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-analytics.md)
- [Integration Guide](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-analytics/integration-guide.md)
- [GET Dashboard by Unit](https://docs.butternetwork.io/butter-swap-integration/butter-api-for-analytics/get-dashboard-by-unit.md)