active Legal form GmbH

S4K GmbH

Dänischenhagen ·HRB 25905KI Kiel

Handelsregister API View JSON Collapse

{
    "name": "S4K GmbH",
    "status": "ACTIVE"
}

Live API

GEThandelsregister.ai/api/v1/fetch-organization

?q=c89020e76cd0d21a93e6b55ee26d61bc

&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=c89020e76cd0d21a93e6b55ee26d61bc&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="c89020e76cd0d21a93e6b55ee26d61bc",
    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: 'c89020e76cd0d21a93e6b55ee26d61bc',
  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: 'c89020e76cd0d21a93e6b55ee26d61bc',
    features: [
      'financial_kpi',
      'balance_sheet_accounts',
      'related_persons',
      'shareholders',
      'ubos',
      'shareholdings',
      'history',
      'annual_financial_statements__html',
    ],
  });
  console.log(organization.name);
})();

JSON preview

{
    "entity_id": "c89020e76cd0d21a93e6b55ee26d61bc",
    "name": "S4K GmbH",
    "status": "ACTIVE",
    "legal_form": "GmbH",
    "registration_date": "2023-07-28T00:00:00+00:00",
    "address": {
        "street": "Paul-Schroeder-Straße",
        "house_number": "65",
        "postal_code": "24229",
        "city": "Dänischenhagen",
        "country": "DEU"
    },
    "registration": {
        "register_type": "HRB",
        "register_number": "25905KI",
        "court": "Kiel"
    }
}

"purpose": "…"

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"representation_scheme": { … }

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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.

features=balance_sheet_accounts

balance_sheet_accounts array<object>

Per fiscal year: hierarchical balance-sheet line items from the published annual statement.

features=profit_and_loss_account

profit_and_loss_account array<object>

Per fiscal year: hierarchical profit-and-loss line items.

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: Paul-Schroeder-Straße 65
24229 Dänischenhagen
Commercial register: HRB 25905KI, Kiel
Registration date: July 28, 2023
Industry: Erbringung von Beratungsleistungen auf dem Gebiet der Informationstechnologie
Unternehmensberatung
Beteiligungsgesellschaften
Registered capital: 26,000.00 EUR
Representation rules: Die Gesellschaft hat einen oder mehrere Geschäftsführer. Ist ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, wird die Gesellschaft gemeinschaftlich durch zwei Geschäftsführer oder durch einen Geschäftsführer in Gemeinschaft mit einem Prokuristen vertreten.
Purpose: Erbringung von Beratungsleistungen, insbesondere im Bereich M & A / Unternehmenstransaktionen und Dienstleistungen für Unternehmen und Behörden, einschließlich des Erwerbs, des Haltens und desVerwaltens von eigenem Vermögen

Financials

Total assets 2024

1,31 Mio. €

Balance sheet

2024

Assets 1,31 Mio

Current Assets 91,9 % 1,21 Mio
Fixed Assets 8,1 % 105,6 k

Liabilities and Equity 1,31 Mio

Liabilities 65,9 % 863,9 k
Equity 32,2 % 422,2 k
Provisions 1,9 % 25,2 k

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

Authorized representatives

Axel Jörg Schulz since 2023 Managing Director

Ownership & holdings

Shareholders

Axel Jörg Schulz 51.0 % 13k €
L*** S***** 24.5 % 6k €
J**** S***** 24.5 % 6k €

Ultimate beneficial owners (UBOs)

1 hold ≥ 25%

A*** S***** ≥25% 51.0 %
L*** S***** 24.5 %

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

Holds shares in

EUROCON blue GmbH Kiel, DEU 50.0 %
Humain Solutions UG (haftungsbeschränkt) Süderholz, DEU 2.5 %
Palekana Verwaltungs UG (haftungsbeschränkt) Süderholz, DEU 2.5 %

History

2023
18.12.

Change of bylaws

S4K GmbH
18.12.

Change of purpose

Erbringung von Beratungsleistungen, insbesondere im Bereich M & A / Unternehmenstransaktionen und Dienstleistungen für Unternehmen und Behörden, einschließlich des Erwerbs, des Haltens und desVerwaltens von eigenem Vermögen
17.11.

Change of share capital

S4K GmbH
17.11.

Change of bylaws

S4K GmbH
08.08.

Member entry

Axel Jörg Schulz · Managing Director
08.08.

Incorporation

S4K GmbH
08.08.

Change of representation scheme

Die Gesellschaft hat einen oder mehrere Geschäftsführer. Ist ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, wird die Gesellschaft gemeinschaftlich durch zwei Geschäftsführer oder durch einen Geschäftsführer in Gemeinschaft mit einem Prokuristen vertreten.
08.08.

Change of share capital

S4K GmbH

6 more entries Get API key →

Annual statements

Original published statements, ordered by fiscal year.

1 document

Fiscal year	Document	Published	Access
2024	Jahresabschluss	Published September 22, 2025	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 S4K GmbH. Include fiscal years and sources.\n\nentity_id: c89020e76cd0d21a93e6b55ee26d61bc",
    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 S4K GmbH. Include fiscal years and sources.

entity_idc89020e76cd0d21a93e6b55ee26d61bc

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