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

# Overview

If you are Aggregators, Cross-Chain Swap, DEX, etc., you can choose to install Owlto-API as your underlying solution to achieve cross-chain functionality between different networks, and in-depth integration to customize your product.

The URL path for API: [https://owlto.finance/api/bridge\_api/v1/{API}](https://owlto.finance/api/bridge_api/v1/{api})

Documentation: <https://owlto.finance/bridge_api/v1/swagger/index.html>

| API                   | Description                                              |
| --------------------- | -------------------------------------------------------- |
| get\_all\_pair\_infos | Make a query on all supported tokens/chains pairs        |
| get\_build\_tx        | Create transaction body for sending to the "from chain". |
| get\_receipt          | Check the status of a bridge process                     |

### Step Guide

#### step 1. get\_all\_pair\_infos

Firstly, you can make a query through this API to find all supported trading pairs and related information (such as minimum, maximum values, etc.).

#### step 2. get\_build\_tx

Following then, you can create transaction body for sending to the "from chain" through this API. This body does not contain any fields related to gas price.

#### step 3. get\_receipt

After sending the transaction obtained in step 2 to the blockchain, you can use the hash value of that transaction to query this API to obtain the status of the bridging process.