curl --request POST \
  --url 'https://clarus-api.com/graphql#ListAccounts' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Clarus-Subdomain: <api-key>' \
  --data '
{
  "query": "query($filter: AccountFilterType) { accounts { all(filter: $filter) { edges { node { id code name is_short_pickable external_system_reference1 vat_number } } } } }"
}
'

import requests

url = "https://clarus-api.com/graphql#ListAccounts"

payload = { "query": "query($filter: AccountFilterType) { accounts { all(filter: $filter) { edges { node { id code name is_short_pickable external_system_reference1 vat_number } } } } }" }
headers = {
    "Authorization": "Bearer <token>",
    "X-Clarus-Subdomain": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {
    Authorization: 'Bearer <token>',
    'X-Clarus-Subdomain': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    query: 'query($filter: AccountFilterType) { accounts { all(filter: $filter) { edges { node { id code name is_short_pickable external_system_reference1 vat_number } } } } }'
  })
};

fetch('https://clarus-api.com/graphql#ListAccounts', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "data": {
    "accounts": {
      "all": {
        "edges": [
          {
            "node": {
              "id": "1",
              "code": "ACME",
              "name": "Acme Corporation",
              "is_short_pickable": false,
              "external_system_reference1": "ACME-EXT",
              "vat_number": "GB123456789"
            }
          }
        ]
      }
    }
  }
}

{
  "error": "<string>"
}