active Legal form GmbH

Gruner Sachverständigen GmbH

Köln ·HRB 104328 Köln

Open in ChatGPT Question copied – paste it into ChatGPT.

Handelsregister API View JSON Collapse

{
    "name": "Gruner Sachverständigen GmbH",
    "status": "ACTIVE"
}

Live API

GEThandelsregister.ai/api/v1/fetch-organization

?q=44cb4fe58c9718a2da32ccb2b15fac03

&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=44cb4fe58c9718a2da32ccb2b15fac03&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="44cb4fe58c9718a2da32ccb2b15fac03",
    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: '44cb4fe58c9718a2da32ccb2b15fac03',
  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: '44cb4fe58c9718a2da32ccb2b15fac03',
    features: [
      'financial_kpi',
      'balance_sheet_accounts',
      'related_persons',
      'shareholders',
      'ubos',
      'history',
      'annual_financial_statements__html',
    ],
  });
  console.log(organization.name);
})();

JSON preview

{
    "entity_id": "44cb4fe58c9718a2da32ccb2b15fac03",
    "name": "Gruner Sachverständigen GmbH",
    "status": "ACTIVE",
    "legal_form": "GmbH",
    "registration_date": "2020-12-08T00:00:00+00:00",
    "address": {
        "street": "Hansaring",
        "house_number": "55",
        "postal_code": "50670",
        "city": "Köln",
        "country": "DEU"
    },
    "registration": {
        "register_type": "HRB",
        "register_number": "104328",
        "court": "Köln"
    }
}

"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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"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: Hansaring 55
50670 Köln
Commercial register: HRB 104328, Köln
Registration date: December 8, 2020
Industry: Ingenieurbüros für Fachplanung von technischer Gebäudeausrüstung
Ingenieurbüros für Tragwerksplanung
Ingenieurbüros für bautechnische Gesamtplanung von Ingenieurbauwerken und Verkehrsanlagen
Registered capital: 25,000.00 EUR
Representation rules: Ist nur ein Geschäftsführer bestellt, so vertritt er die Gesellschaft allein. Sind mehrere Geschäftsführer bestellt, so wird die Gesellschaft durch zwei Geschäftsführer oder durch einen Geschäftsführer gemeinsam mit einem Prokuristen vertreten.
Purpose: der Betrieb einer Ingenieursunternehmung für den gesamten Ingenieur- und Architekturbereich, insbesondere auf dem Gebiet der Erbringung von Sachverständigentätigkeiten im Bereich Brandschutz, das Prüfen, Überwachen, Begutachten, Zertifizieren, Beraten, Planen und Entwickeln auf den Gebieten Sicherheits- und Anlagentechnik, Arbeitssicherheit, Qualitätssicherung, Umweltschutz, Werkstofftechnik, Dampf- und Drucktechnik, Elektro-, Gebäude- und Fördertechnik und damit in sachlichem Zusammenhang stehenden anderen Gebieten, die Herstellung und der Vertrieb aller damit in Verbindung stehenden Sachen und Rechten, die Erbringung sonstiger Dienstleistungen sowie die Erfüllung von Aufgaben im Rahmen von Anerkennungen, Akkreditierung und Notifizierungen.

Financials

Total assets 2024

119.925 €

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 119,9 k

Current Assets 100,0 % 119,9 k

Liabilities and Equity 119,9 k

Liabilities 43,1 % 51,7 k
Equity 43,0 % 51,6 k
Provisions 13,8 % 16,6 k

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

Balance sheet data available for 1 earlier fiscal years.

Authorized representatives

Christoph Vahlhaus since 2021 Managing Director
Jens Axel Kähler since 2026 Managing Director
Manuel Tiedemann since 2021 Managing Director
Matthias Karger since 2023 Managing Director
Patrick Sonntag since 2023 Managing Director
Christian Nolte since 2024 Procura
Marc Fontolliet since 2024 Procura
Monica Schneider since 2023 Procura
Olivier Aebi since 2021 Procura
Stefanie Sack since 2023 Procura
Yanik Nabholz since 2021 Procura

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

Ownership & holdings

Shareholders

Top 3 hold 90.0 %

Gruner AG CHE Handelsregisteramt des Kantons Basel-Stadt CHE-138.421.310 80.0 % 20k €
P****** S****** 5.0 % 1k €
M****** K***** 5.0 % 1k €

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

Ultimate beneficial owners (UBOs)

20.0 % identified 80.0 % unidentified

J*** K***** 5.0 %
M****** K***** 5.0 %

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

History

2026
27.01.

Branch registered

Gruner Sachverständigen GmbH
27.01.

Branch registered

Gruner Sachverständigen GmbH
27.01.

Member entry

Jens Axel Kähler · Managing Director
2025
20.03.

Correction of personal data

Monica Schneider · Procura
20.03.

Branch registered

Gruner Sachverständigen GmbH
20.03.

Branch registered

Gruner Sachverständigen GmbH
20.03.

Branch registered

Gruner Sachverständigen GmbH
20.03.

Correction of personal data

Monica Schneider · Procura

30 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 21, 2026	Via the API
2023	Jahresabschluss	Published July 9, 2025	Read full text

All financial statements via the API

2023 Jahresabschluss Full text

Gruner Sachverständigen GmbH

Köln

Jahresabschluss zum Geschäftsjahr vom 01.01.2023 bis zum 31.12.2023

Bilanz zum 31.12.2023

Gruner Sachverständigen GmbH Ingenieurgesellschaft, Köln

AKTIVA

	Geschäftsjahr	Vorjahr
	EUR	EUR
A. Umlaufvermögen	157.372,81	24.388,91
	157.372,81	24.388,91

PASSIVA

	Geschäftsjahr	Vorjahr
	EUR	EUR
A. Eigenkapital	38.890,58	24.388,91
B. Rückstellungen	10.978,41	0,00
C. Verbindlichkeiten	107.503,82	0,00
- davon mit einer Restlaufzeit bis zu einem Jahr EUR 107.503,82 (EUR 0,00)
	157.372,81	24.388,91

Köln, den 30.06.2024

gez. Geschäftsführung

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 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 Gruner Sachverständigen GmbH, who owns it and how have its financials developed? Include fiscal years and sources.\n\nentity_id: 44cb4fe58c9718a2da32ccb2b15fac03",
    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 Gruner Sachverständigen GmbH, who owns it and how have its financials developed? Include fiscal years and sources.

entity_id44cb4fe58c9718a2da32ccb2b15fac03

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