active Legal form GmbH

CS1 Online Marketing GmbH

Frankfurt (Oder) ·HRB 19587 Frankfurt/Oder ·carlosiebert.de

Open in ChatGPT Question copied – paste it into ChatGPT.

Handelsregister API View JSON Collapse

{
    "name": "CS1 Online Marketing GmbH",
    "status": "ACTIVE"
}

Live API

GEThandelsregister.ai/api/v1/fetch-organization

?q=be6492d36d1d6aa4f87ba35b43decad7

&features=financial_kpi

&features=balance_sheet_accounts

&features=related_persons

&features=shareholders

&features=ubos

&features=history

&features=annual_financial_statements__html

curl -H 'X-API-KEY: YOUR_API_KEY' \
  "https://handelsregister.ai/api/v1/fetch-organization?q=be6492d36d1d6aa4f87ba35b43decad7&features=financial_kpi&features=balance_sheet_accounts&features=related_persons&features=shareholders&features=ubos&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="be6492d36d1d6aa4f87ba35b43decad7",
    features=[
        "financial_kpi",
        "balance_sheet_accounts",
        "related_persons",
        "shareholders",
        "ubos",
        "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: 'be6492d36d1d6aa4f87ba35b43decad7',
  features: [
    'financial_kpi',
    'balance_sheet_accounts',
    'related_persons',
    'shareholders',
    'ubos',
    '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: 'be6492d36d1d6aa4f87ba35b43decad7',
    features: [
      'financial_kpi',
      'balance_sheet_accounts',
      'related_persons',
      'shareholders',
      'ubos',
      'history',
      'annual_financial_statements__html',
    ],
  });
  console.log(organization.name);
})();

JSON preview

{
    "entity_id": "be6492d36d1d6aa4f87ba35b43decad7",
    "name": "CS1 Online Marketing GmbH",
    "status": "ACTIVE",
    "legal_form": "GmbH",
    "registration_date": "2022-07-20T00:00:00+00:00",
    "address": {
        "street": "Fürstenwalder Straße",
        "house_number": "22/23",
        "postal_code": "15234",
        "city": "Frankfurt (Oder)",
        "country": "DEU"
    },
    "registration": {
        "register_type": "HRB",
        "register_number": "19587",
        "court": "Frankfurt/Oder"
    }
}

"purpose": "…"

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"representation_scheme": { … }

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"capital": { … }

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"contact_data": { … }

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"industry_classification": { … }

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"keywords": [ … ]

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"products_and_services": [ … ]

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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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"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: Fürstenwalder Straße 22/23
15234 Frankfurt (Oder)
Commercial register: HRB 19587, Frankfurt/Oder
Registration date: July 20, 2022
Industry: Erbringung von Beratungsleistungen auf dem Gebiet der Informationstechnologie
Erbringung sonstiger Vermittlungs- und Vermarktungsdienstleistungen für Patente
Erbringung von sonstigen Dienstleistungen der Informationstechnologie
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: Verkauf und Vermarktung von Softwareprodukten und Dienstleistungen sowie Beratung im Bereich Internet-Marketing, insbesondere im Bereich Internet-Suchmaschinen; die Beratung, die Erstellung von Konzepten und Strategien, das Projektmanagement sowie die Umsetzung von Maßnahmen im Bereich Marketing; die Entwicklung eigener Produkte sowie das Coaching im Bereich Kommunikation und Information.

Financials

Employees 2024

14

Total assets 2024

803.492 €

Net income 2024

276.383 €

Annual accounts · 01.01.2024 – 31.12.2024

1 previous years · values unlocked with an API key Get API key →

Balance sheet

Annual accounts · 01.01.2024 – 31.12.2024

2024

Assets 803,5 k

Current Assets 96,0 % 771,5 k
Fixed Assets 2,5 % 20,0 k
Prepaid Expenses 1,5 % 12,0 k

Liabilities and Equity 803,5 k

Equity 77,2 % 620,4 k
Provisions 16,2 % 130,4 k
Liabilities 6,6 % 52,7 k

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

Balance sheet data available for 1 earlier fiscal years.

Authorized representatives

Carlo Siebert since 2022 Managing Director

Ownership & holdings

Shareholders

Carlo Siebert Holding GmbH DEU Amtsgericht Frankfurt/Oder HRB 20225 FF 100.0 % 26k €

Ultimate beneficial owners (UBOs)

1 hold ≥ 25%

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

History

2023
15.06.

Change of bylaws

CS1 Online Marketing GmbH
15.06.

Change of share capital

CS1 Online Marketing GmbH
22.05.

Split

CS1 Online Marketing GmbH
2022
06.09.

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.
06.09.

Change of seat

CS1 Online Marketing GmbH
06.09.

Member entry

Carlo Siebert · Managing Director
06.09.

Change of bylaws

CS1 Online Marketing GmbH
06.09.

Change of legal form

Gesellschaft mit beschränkter Haftung

6 more events including all details Get API key →

Annual statements

Original published statements, ordered by fiscal year.

2 documents

Fiscal year	Document	Published	Access
2024	Jahresabschluss	Published April 17, 2026	Via the API
2023	Jahresabschluss	Published June 18, 2025	Read full text

All financial statements via the API

2023 Jahresabschluss Full text

CS1 Online Marketing GmbH

Frankfurt (Oder)

Jahresabschluss zum Geschäftsjahr vom 01.01.2023 bis zum 31.12.2023

Bilanz

Aktiva
	31.12.2023 EUR	31.12.2022 EUR
A. Anlagevermögen	21.472,00	29.219,00
B. Umlaufvermögen	436.580,82	357.971,74
C. Rechnungsabgrenzungsposten	9.057,85	8.512,31
Aktiva	467.110,67	395.703,05

Passiva
	31.12.2023 EUR	31.12.2022 EUR
A. Eigenkapital	343.998,07	338.973,57
B. Rückstellungen	70.032,38	21.750,38
C. Verbindlichkeiten	53.080,22	34.979,10
davon mit einer Restlaufzeit bis zu einem Jahr	53.080,22	34.979,10
davon gegenüber Gesellschaftern	0,00	1.274,33
Summe Passiva	467.110,67	395.703,05

sonstige Berichtsbestandteile

Angaben unter der Bilanz

Angaben zur Identifikation der Gesellschaft laut Registergericht

Firmenname laut Registergericht:	CS1 Online Marketing GmbH
Firmensitz laut Registergericht:	Frankfurt (Oder)
Registereintrag:	Handelsregister
Registergericht:	Frankfurt/Oder
Register-Nr.:	HRB 19587 FF

Angaben Kleinstkapitalgesellschaften gemäß § 264 Abs.1 HGB

1. Es liegen keine Haftungsverhältnisse aus nicht bilanzierten Verbindlichkeiten gemäß § 251 und 268 Abs.7 HGB vor.
2. Es liegen keine gewährten Vorschüsse und Kredite der Mitglieder des Geschäftsführungsorgans gemäß § 285 Nummer 9 Buchstabe c HGB vor.
3. Entfällt.

Unterschrift der Geschäftsführung

Frankfurt (Oder), 17.03.2025

Carlo Siebert
Geschäftsführer

gez. Carlo Siebert

Angaben zur Feststellung:
Der Jahresabschluss wurde am 19.03.2025 festgestellt.

Register documents

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

GET/v1/fetch-document

View the document API

Website carlosiebert.de

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 the handelsregister.ai app in ChatGPT and add it.
Open the app in ChatGPT
Sign in with your handelsregister.ai account when ChatGPT asks.
Ask your question in the chat – the answers come straight from the commercial register.

Prefer to connect it yourself? Create a custom app in ChatGPT’s developer mode with this server URL:

https://mcp.handelsregister.ai/mcp

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”.

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="Who runs CS1 Online Marketing GmbH, who owns it and how have its financials developed? Include fiscal years and sources.\n\nentity_id: be6492d36d1d6aa4f87ba35b43decad7",
    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:

Who runs CS1 Online Marketing GmbH, who owns it and how have its financials developed? Include fiscal years and sources.

entity_idbe6492d36d1d6aa4f87ba35b43decad7

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