> ## Documentation Index
> Fetch the complete documentation index at: https://docs.utexo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Networks and Tokens

> Discover Utexo Swap availability, supported networks, and supported tokens.

## Overview

Use these endpoints before requesting a quote. Network and token availability can differ by environment.

### `GET /healthcheck`

Checks whether the Utexo API can accept requests.

**Authentication:** `X-API-Key`

The endpoint accepts no path, query, or body parameters and does not support pagination.

```bash theme={null}
curl -X GET \
  'BASE_URL_PLACEHOLDER/healthcheck' \
  -H 'accept: application/json' \
  -H 'X-API-Key: API_KEY_PLACEHOLDER'
```

A successful request returns `200 OK` with an empty body. A `503 Service Unavailable` response can return:

```json theme={null}
{
  "code": 0,
  "message": "string"
}
```

### `GET /networks`

Returns the blockchain networks available through Utexo.

**Authentication:** `X-API-Key`

| Query parameter | Type   | Required | Description                                 |
| --------------- | ------ | -------- | ------------------------------------------- |
| `token`         | string | No       | Filters networks by token contract address. |

```bash theme={null}
curl -X GET \
  'BASE_URL_PLACEHOLDER/networks?token=0xdac17f958d2ee523a2206206994597c13d831ec7' \
  -H 'accept: application/json' \
  -H 'X-API-Key: API_KEY_PLACEHOLDER'
```

| Response field                              | Type    | Description                                   |
| ------------------------------------------- | ------- | --------------------------------------------- |
| `networks`                                  | array   | Supported blockchain networks.                |
| `networks[].id`                             | integer | Network identifier.                           |
| `networks[].name`                           | string  | Network name.                                 |
| `networks[].type`                           | enum    | `EVM`, `TRON`, `BITCOIN`, or `SOLANA`.        |
| `networks[].iconUrl`                        | string  | Network icon URL.                             |
| `networks[].features`                       | object  | Network feature settings.                     |
| `networks[].features.supportsCustomTokens`  | boolean | Whether the network supports custom tokens.   |
| `networks[].features.supportsOptimizedSwap` | boolean | Whether the network supports optimized swaps. |

### `GET /tokens`

Returns a paginated list of tokens available for swaps.

**Authentication:** `X-API-Key`

| Query parameter | Type    | Required | Description                                   |
| --------------- | ------- | -------- | --------------------------------------------- |
| `limit`         | integer | No       | Maximum number of results to return.          |
| `offset`        | integer | No       | Number of results to skip.                    |
| `q`             | string  | No       | Searches by token symbol or contract address. |
| `network-id`    | integer | No       | Filters tokens by network ID.                 |

For example, request the second page of 20 results with `limit=20&offset=20`.