## List Keys

`client.V1.CustomFields.ListKeys(ctx, params) (*V1CustomFieldListKeysResponse, error)`

**post** `/v1/customFields/listKeys`

List all active custom field keys, optionally filtered by entity type.

### Parameters

- **params:** `V1CustomFieldListKeysParams`

  - **NextPage:** `param.Field[string]`

    Query param: Cursor that indicates where the next page of results should start.

  - **Entities:** `param.Field[[]V1CustomFieldListKeysParamsEntity]`

    Body param: Optional list of entity types to return keys for

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

    - `V1CustomFieldListKeysParamsEntity`

### Returns

- Not supported

  - **Data:** `[]V1CustomFieldListKeysResponseData`

    - **EnforceUniqueness:** `bool`

    - **Entity:** `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

      - `V1CustomFieldListKeysResponseDataEntity`

    - **Key:** `string`

  - **NextPage:** `string`

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/Metronome-Industries/metronome-go"
  "github.com/Metronome-Industries/metronome-go/option"
)

func main() {
  client := metronome.NewClient(
    option.WithBearerToken("My Bearer Token"),
  )
  response, err := client.V1.CustomFields.ListKeys(context.TODO(), metronome.V1CustomFieldListKeysParams{
    Entities: metronome.F([]metronome.V1CustomFieldListKeysParamsEntity{metronome.V1CustomFieldListKeysParamsEntityCustomer}),
  })
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response.Data)
}
```