active Legal form GmbH

Castella Nova GmbH

Essen ·HRB 32720 Essen

Handelsregister API View JSON Collapse

{
    "name": "Castella Nova GmbH",
    "status": "ACTIVE"
}

Live API

GEThandelsregister.ai/api/v1/fetch-organization

?q=3a42d9f010a2042f45cfaf477ac6390a

&features=financial_kpi

&features=balance_sheet_accounts

&features=related_persons

&features=shareholders

&features=ubos

&features=shareholdings

&features=history

&features=annual_financial_statements__html

curl -H 'X-API-KEY: YOUR_API_KEY' \
  "https://handelsregister.ai/api/v1/fetch-organization?q=3a42d9f010a2042f45cfaf477ac6390a&features=financial_kpi&features=balance_sheet_accounts&features=related_persons&features=shareholders&features=ubos&features=shareholdings&features=history&features=annual_financial_statements__html"

# pip install handelsregister
from handelsregister import Handelsregister

client = Handelsregister(api_key="YOUR_API_KEY")  # or set HANDELSREGISTER_API_KEY
organization = client.fetch_organization(
    q="3a42d9f010a2042f45cfaf477ac6390a",
    features=[
        "financial_kpi",
        "balance_sheet_accounts",
        "related_persons",
        "shareholders",
        "ubos",
        "shareholdings",
        "history",
        "annual_financial_statements__html",
    ],
)
print(organization["name"])

// npm install handelsregister
import { Handelsregister } from 'handelsregister';

const client = new Handelsregister('YOUR_API_KEY'); // or set HANDELSREGISTER_API_KEY
const organization = await client.fetchOrganization({
  q: '3a42d9f010a2042f45cfaf477ac6390a',
  features: [
    'financial_kpi',
    'balance_sheet_accounts',
    'related_persons',
    'shareholders',
    'ubos',
    'shareholdings',
    'history',
    'annual_financial_statements__html',
  ],
});
console.log(organization.name);

// npm install handelsregister
const { Handelsregister } = require('handelsregister');

const client = new Handelsregister(process.env.HANDELSREGISTER_API_KEY);
(async () => {
  const organization = await client.fetchOrganization({
    q: '3a42d9f010a2042f45cfaf477ac6390a',
    features: [
      'financial_kpi',
      'balance_sheet_accounts',
      'related_persons',
      'shareholders',
      'ubos',
      'shareholdings',
      'history',
      'annual_financial_statements__html',
    ],
  });
  console.log(organization.name);
})();

JSON preview

{
    "entity_id": "3a42d9f010a2042f45cfaf477ac6390a",
    "name": "Castella Nova GmbH",
    "status": "ACTIVE",
    "legal_form": "GmbH",
    "registration_date": "2021-08-17T00:00:00+00:00",
    "address": {
        "street": "Ringstraße",
        "house_number": "51",
        "postal_code": "45219",
        "city": "Essen",
        "country": "DEU"
    },
    "registration": {
        "register_type": "HRB",
        "register_number": "32720",
        "court": "Essen"
    }
}

"purpose": "…"

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"capital": { … }

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"industry_classification": { … }

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"history": [ … ]

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"financial_kpi": [ … ]

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"related_persons": { … }

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"shareholders": { … }

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"ubos": { … }

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"shareholdings": { … }

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"balance_sheet_accounts": [ … ]

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"annual_financial_statements__html": [ … ]

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Base fields

entity_id string

Stable handelsregister.ai identifier (32-char hex string).

name string

Registered legal name of the entity.

status enum

ACTIVE, TERMINATED, DISSOLVED or INSOLVENT.

legal_form string

Legal form (GmbH, AG, KG, …) when available.

address object

Postal address with street, house_number, postal_code, city, county, state, country and coordinates.

registration object

Register record with court, register_type and register_number.

registration_date date

Initial entry into the commercial register (ISO date).

purpose string

Stated business purpose (Unternehmensgegenstand).

representation_scheme object

General representation scheme: { current: [...], history: [...] } with effective_from/effective_to per version.

capital object

Registered capital: { current, history }. current carries amount, currency and kind (STAMMKAPITAL, GRUNDKAPITAL, HAFTSUMME, GENEHMIGTES_KAPITAL, BEDINGTES_KAPITAL, VARIABLES_KAPITAL — open enum); each history entry has value, effective_from and effective_to (null = still in force). change_amount on a history entry is unsigned and does not always equal the difference between two consecutive amounts, so derive increases and decreases from the amounts. Partnerships and other entities without registered capital return current: null and an empty history.

contact_data object

website, phone_number and email when available.

industry_classification object

Industry codes per WZ2008 and WZ2025 with labels.

keywords array<string>

Keywords derived from the business purpose.

products_and_services array<string>

Product and service descriptions when available.

history array<object>

Chronological log of all register changes (name, seat, capital, representation, …).

features=financial_kpi

financial_kpi array<object>

Per fiscal year: revenue, employees, active_total (balance-sheet total), net_income, material_expenses, personnel_expenses. Every year names the source of its figures in _provenance: statement_type (Jahresabschluss = annual accounts, Bilanz = balance sheet only, Konzernabschluss = consolidated accounts; null for market data), period_start and period_end of the fiscal year, plus exempt_subsidiary and parent_organization ({ entity_id, name }). With exempt_subsidiary: true the company published the consolidated accounts of parent_organization instead of accounts of its own, so that year's figures cover the whole group.

features=balance_sheet_accounts

balance_sheet_accounts array<object>

Per fiscal year: hierarchical balance-sheet line items from the published statement, with _provenance naming the source of the figures (fields as in financial_kpi). For energy utilities, Max accounts also receive activity_statements through the API: the balance sheets of the activity statements (section 6b EnWG), one per regulated activity such as electricity or gas distribution; together they do not add up to the company's balance sheet.

features=profit_and_loss_account

profit_and_loss_account array<object>

Per fiscal year: hierarchical profit-and-loss line items, with _provenance naming the source of the figures (fields as in financial_kpi). For energy utilities, Max accounts also receive activity_statements through the API: the profit and loss accounts of the activity statements (section 6b EnWG), one per regulated activity.

features=related_persons

related_persons object

Authorized representatives: { current: [...], past: [...] } — managing directors, board members, signatories. Each person carries organization_representation_scheme and role_representation_scheme (current scheme + history).

features=shareholders

shareholders object

Shareholders: { total_capital, entries: [...], history: { current_as_of, past: [...] } }. Each entry carries shareholder, contribution, contribution_ratio and role; history.past delivers previous shareholder lists with an as_of date. total_capital, contribution and contribution_ratio may be null (e.g. for partnerships).

features=ubos

ubos object

Ultimate beneficial owners: { beneficial_owners, unresolved_beneficial_owners, coverage } as recorded in the transparency register.

features=shareholdings

shareholdings object

Stakes this entity holds in others: { holdings: { current: [...] }, summary }. Each holding links another organization by entity_id.

features=publications

publications array<object>

Official commercial-register publications (date, title, full text).

features=annual_financial_statements__html

annual_financial_statements__html array<object>

Published annual statements with document_html (rendered HTML), document_type, document_title, document_date, language and year.

Overview

Legal form: GmbH
Address: Ringstraße 51
45219 Essen
Commercial register: HRB 32720, Essen
Registration date: August 17, 2021
Industry: Erbringung von allen anderen wirtschaftlichen Dienstleistungen für Unternehmen und Privatpersonen a. n. g.
Erbringung von Beratungsleistungen auf dem Gebiet der Informationstechnologie
Unternehmensberatung
Registered capital: 33,741.00 EUR
Purpose: Erbringung von Dienstleistungen jeglicher Art in den Bereichen M&A, Strategie, Finanzen, Einkauf, Personalwesen, Administration und Kommunikation sowie im Bereich der strategischen Beratung von anderen Unternehmen

Financials

Employees 2024

14

Total assets 2024

1,84 Mio. €

Balance sheet

2024

Assets 1,84 Mio

Current Assets 55,0 % 1,01 Mio
Fixed Assets 44,4 % 815,2 k
Prepaid Expenses 0,6 % 11,2 k

Liabilities and Equity 1,84 Mio

Liabilities 85,4 % 1,57 Mio
Equity 13,2 % 243,3 k
Provisions 1,3 % 24,4 k

Full balance sheet line items with an API key Get API key →

Authorized representatives

Tobias Kaulfuß since 2025 Managing Director
Silke Kaulfuß-Klein since 2022 Procura

3 former representatives · viewable with an API key Get API key →

Ownership & holdings

Shareholders

Top 3 hold 80.4 %

Rura Family Equity GmbH DEU AG Essen HRB 29520 58.6 % 20k €
S**** K****** 14.0 % 5k €
Altiprox GmbH DEU AG Essen HRB 32632 7.7 % 3k €

8 more shareholders · viewable with an API key Get API key →

Ultimate beneficial owners (UBOs)

38.7 % identified 61.4 % unidentified

S**** K****** 14.0 %
S***** A**** 7.7 %

8 more beneficial owners · viewable with an API key Get API key →

Holds shares in

Castella Nova Finance GmbH Essen, DEU 100.0 %
Castella Nova Services GmbH Essen, DEU 100.0 %
Castella Archway Fund Management GmbH Essen, DEU 100.0 %

1 more holdings · viewable with an API key Get API key →

History

2026
23.06.

Change of bylaws

Castella Nova GmbH
23.06.

Change of authorized capital

Castella Nova GmbH
23.06.

Change of share capital

Castella Nova GmbH
22.05.

Exit of position

Marc Noel Kienzle · Managing Director
18.03.

Change of bylaws

Castella Nova GmbH
18.03.

Change of share capital

Castella Nova GmbH
08.03.

Change of bylaws

Castella Nova GmbH
08.03.

Change of share capital

Castella Nova GmbH

29 more events including all details Get API key →

Annual statements

Original published statements, ordered by fiscal year.

1 document

Fiscal year	Document	Published	Access
2024	Jahresabschluss	Published May 6, 2026	Via the API

All financial statements via the API

Register documents

Bring original register extracts and company documents into your application as PDF or XML.

GET/v1/fetch-document

View the document API

Current extract (AD) PDF
Chronological extract (CD) PDF
Structured content (SI, XML) XML
Shareholders list PDF
Articles of association PDF

Explore more companies

Handelsregister API · MCP

Company data in your AI chat

Ask about directors, ownership and financial figures. Our MCP server connects your assistant to the Handelsregister API.

MCP documentation

Connect your assistant

Open Connectors in Claude and add a custom connector.
Enter this server URL and add the connector:
https://mcp.handelsregister.ai/mcp
Connect with your handelsregister.ai account, then enable the connector in your chat via “+” → “Connectors”.

In ChatGPT on the web, open Settings → Apps and create a custom app. Developer mode must be enabled for your account.
Use “handelsregister” as the name, OAuth for authentication and this server URL:
https://mcp.handelsregister.ai/mcp
Sign in with your handelsregister.ai account, create the app and select it from the tools menu in your chat.

Run once in your terminal:

Terminal

claude mcp add --transport http handelsregister https://mcp.handelsregister.ai/mcp \
  --header "X-API-Key: YOUR_API_KEY"

Replace YOUR_API_KEY with your handelsregister.ai API key.

Add this MCP server as a tool in your application:

Python

from openai import OpenAI

client = OpenAI()
response = client.responses.create(
    model="gpt-6-astra",
    input="Show me the directors, shareholders and latest available financial figures for Castella Nova GmbH. Include fiscal years and sources.\n\nentity_id: 3a42d9f010a2042f45cfaf477ac6390a",
    tools=[{
        "type": "mcp",
        "server_label": "handelsregister",
        "server_url": "https://mcp.handelsregister.ai/mcp",
        "headers": {"X-API-Key": "YOUR_API_KEY"},
        "require_approval": "never",
    }],
)
print(response.output_text)

Replace YOUR_API_KEY with your handelsregister.ai API key.

Add this configuration to your MCP client:

JSON

{
  "mcpServers": {
    "handelsregister": {
      "url": "https://mcp.handelsregister.ai/mcp",
      "headers": { "X-API-Key": "YOUR_API_KEY" }
    }
  }
}

Replace YOUR_API_KEY with your handelsregister.ai API key.

Ask about this company

Once connected, ask your assistant this question:

Show me the directors, shareholders and latest available financial figures for Castella Nova GmbH. Include fiscal years and sources.

entity_id3a42d9f010a2042f45cfaf477ac6390a

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