curl --request GET \
  --url https://api.kraken.com/v0/insto/custody/vaults/{vault_id}/whitelist/addresses \
  --header 'api-key: <api-key>' \
  --header 'api-nonce: <api-key>' \
  --header 'api-sign: <api-key>'

import requests

url = "https://api.kraken.com/v0/insto/custody/vaults/{vault_id}/whitelist/addresses"

headers = {
    "api-key": "<api-key>",
    "api-sign": "<api-key>",
    "api-nonce": "<api-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {'api-key': '<api-key>', 'api-sign': '<api-key>', 'api-nonce': '<api-key>'}
};

fetch('https://api.kraken.com/v0/insto/custody/vaults/{vault_id}/whitelist/addresses', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.kraken.com/v0/insto/custody/vaults/{vault_id}/whitelist/addresses"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("api-key", "<api-key>")
	req.Header.Add("api-sign", "<api-key>")
	req.Header.Add("api-nonce", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

[
  {
    "asset": "BTC",
    "asset_class": "currency",
    "address_name": "My BTC Wallet",
    "address": "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
    "tag": "destination-tag-42",
    "description": "Primary cold storage wallet",
    "beneficiary": {
      "recipient": "other",
      "type": "business",
      "name": "Blue Moon",
      "last_name": "Smith",
      "vasp_name": "Self-custody",
      "country": "US",
      "province": "California",
      "address_1": "123 Main St",
      "address_2": "Apt 4B",
      "city": "New York",
      "postal_code": "10001"
    }
  }
]

{
  "type": "tag:kraken.com,2025:BadRequest",
  "status": 400,
  "title": "Bad Request",
  "data": {
    "message": "asset_class is required when asset is supplied"
  },
  "detail": "asset supplied without asset_class",
  "instance": "https://debug.kraken.com/req/01HXYZABCDEF"
}

{
  "type": "tag:kraken.com,2025:PermissionDenied",
  "status": 403,
  "title": "Permission Denied",
  "data": {
    "message": "Caller lacks read access to vault VABCDEF234567A"
  },
  "detail": "The caller does not have access to the requested vault.",
  "instance": "https://debug.kraken.com/req/01HXYZABCDEF"
}

{
  "type": "tag:kraken.com,2025:gateway/ReadUpstream",
  "status": 500,
  "title": "Internal Server Error",
  "data": "<unknown>",
  "detail": "Failed to read response from upstream custody service.",
  "instance": "https://debug.kraken.com/req/01HXYZABCDEF"
}

{
  "type": "tag:kraken.com,2025:gateway/Connect",
  "status": 503,
  "title": "Service Unavailable",
  "data": "<unknown>",
  "detail": "Downstream custody service is temporarily unreachable; retry with backoff.",
  "instance": "https://debug.kraken.com/req/01HXYZABCDEF"
}