> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/api-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/api-reference/compute/vm/virtual-machine-instance/describezoneinstanceconfiginfos.md).

# DescribeZoneInstanceConfigInfos

## 1. API Description

This API (DescribeZoneInstanceConfigInfos) is used to query available models in the zone.

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name     | Required | Type                                                                | Description                                                                               |
| ------------------ | -------- | ------------------------------------------------------------------- | ----------------------------------------------------------------------------------------- |
| instanceChargeType | Yes      | [ChargeType](/api-reference/compute/vm/datastructure.md#chargetype) | <p>Pricing model.</p><p>PREPAID: monthly subscription.</p><p>POSTPAID: pay-as-you-go.</p> |
| zoneId             | No       | String                                                              | Zone ID.                                                                                  |
| instanceType       | No       | String                                                              | Instance model.                                                                           |

## 3. Output Parameters

| Parameter Name       | Type                                                                                               | Description                                                                                                           |
| -------------------- | -------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- |
| requestId            | String                                                                                             | <p>The unique request ID, which is returned for each request.</p><p>RequestId is required for locating a problem.</p> |
| instanceTypeQuotaSet | Array of [InstanceTypeQuotaItem](/api-reference/compute/vm/datastructure.md#instancetypequotaitem) | Model list in the zone.                                                                                               |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Obtain available resources.**

```json
POST /api/v2/vm HTTP/1.1
Host: console.zenlayer.com
Content-Type: application/json
X-ZC-Action: DescribeZoneInstanceConfigInfos
<Common Request Params>

Request:
{
  "instanceChargeType":"PREPAID"
}

Response:
{
    "requestId":"T2AC6C0A0-4871-4106-BE90-651552D6185C",
    "response":{
        "requestId":"T2AC6C0A0-4871-4106-BE90-651552D6185C",
        "instanceTypeQuotaSet":[
            {
                "zoneId":"FRA-A",
                "instanceType":"c.4c8g",
                "cpuCount":4,
                "memory":8,
                "internetMaxBandwidthOutLimit":1500,
                "instanceTypeName":"Compute Optimized 4C8G",
            }
            ...
        ]
    }
}
```

{% endtab %}
{% endtabs %}

## 5. Developer Resources

Zenlayer Cloud API 2.0 integrates [SDKs](/api-reference/api-introduction/toolkit/api-sdk.md)，to make it easier for you to call APIs. More programming languages will be supported.

## 6. Error Codes

The following only lists the error codes related to the API business logic. For other error codes, see [Common Error Codes](/api-reference/api-introduction/instruction/commonerrorcode.md).

| HTTP Status Code | Error Code | Description |
| ---------------- | ---------- | ----------- |