# Export KINTRA_API for your environment first; the base URL is on the introduction page.
KEY="YOUR_TENANT_KEY_ID"
SECRET="YOUR_SIGNING_SECRET"

# The signature covers the path and query exactly as sent, so both are split
# off the base URL and reused for the request line below.
API_PATH="/${KINTRA_API#*://*/}"
API_HOST="${KINTRA_API%"$API_PATH"}"
METHOD="GET"
PATH_AND_QUERY="$API_PATH/gateway/customers/YOUR_USER_ID/balances"

# No body on this method, so the signature covers an empty body string.
BODY=''

TIMESTAMP="$(date +%s)"
SIGNATURE="$(printf '%s' "$TIMESTAMP$METHOD$PATH_AND_QUERY$BODY" \
  | openssl dgst -sha256 -hmac "$SECRET" | awk '{print $NF}')"

curl -sS -w '\n%{http_code}' -X "$METHOD" "$API_HOST$PATH_AND_QUERY" \
  -H "X-Tenant-Key: $KEY" \
  -H "X-Tenant-Timestamp: $TIMESTAMP" \
  -H "X-Tenant-Signature: $SIGNATURE"

const options = {
  method: 'GET',
  headers: {
    'X-Tenant-Signature': '<x-tenant-signature>',
    'X-Tenant-Timestamp': '<x-tenant-timestamp>',
    'x-tenant-key': '<api-key>'
  }
};

fetch('https://api.kintra.io/api/v1/gateway/customers/{userId}/balances', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.kintra.io/api/v1/gateway/customers/{userId}/balances"

headers = {
    "X-Tenant-Signature": "<x-tenant-signature>",
    "X-Tenant-Timestamp": "<x-tenant-timestamp>",
    "x-tenant-key": "<api-key>"
}

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

print(response.text)

{
  "success": true,
  "data": {
    "has_next_page": true,
    "items": [
      {
        "asset_address": "<string>",
        "balance": "<string>",
        "chain_id": 123,
        "id": "<string>",
        "user_address": "<string>",
        "created_at": "2023-11-07T05:31:56Z",
        "internal_wallet": {
          "address": "<string>",
          "id": "<string>",
          "user_id": "<string>",
          "wallet_kind": "<string>",
          "created_at": "2023-11-07T05:31:56Z",
          "deleted_at": "2023-11-07T05:31:56Z",
          "label": "<string>",
          "updated_at": "2023-11-07T05:31:56Z"
        },
        "last_updated_block": 123,
        "onchain_asset": {
          "asset_address": "<string>",
          "chain_id": 123,
          "created_at": "2023-11-07T05:31:56Z",
          "decimals": 123,
          "deploy_tx_hash": "<string>",
          "deployed_at": "2023-11-07T05:31:56Z",
          "id": "<string>",
          "key": "<string>",
          "metadata": null,
          "name": "<string>",
          "status": "<string>",
          "symbol": "<string>",
          "total_owners": 123,
          "total_txns": 123,
          "type": "<string>",
          "updated_at": "2023-11-07T05:31:56Z"
        },
        "token_id": "<string>",
        "updated_at": "2023-11-07T05:31:56Z"
      }
    ],
    "limit": 123,
    "page": 123,
    "total_count": 123,
    "total_pages": 123
  },
  "errors": [
    {
      "message": "<string>",
      "path": "<string>"
    }
  ],
  "message": "<string>"
}

{
  "success": true,
  "data": null,
  "errors": [
    {
      "message": "<string>",
      "path": "<string>"
    }
  ],
  "message": "<string>"
}

{
  "success": true,
  "data": null,
  "errors": [
    {
      "message": "<string>",
      "path": "<string>"
    }
  ],
  "message": "<string>"
}

{
  "success": true,
  "data": null,
  "errors": [
    {
      "message": "<string>",
      "path": "<string>"
    }
  ],
  "message": "<string>"
}