# Neugründungen API

> REST API for newly registered German companies from the Handelsregister (German commercial register). ~500 new companies per day. Updated daily.

This API provides structured data about newly founded German companies: company name, address, legal form, directors, business purpose, capital, and more. Data is sourced from the official Handelsregister new registrations list.

## Use Cases

- Sales prospecting and lead generation for newly founded companies
- Market research and trend analysis on German business formations
- CRM enrichment with fresh company data
- Automated outreach to companies without websites (web agencies)
- AI agent workflows for business intelligence

## Documentation

- [Full API Reference (llms-full.txt)](/llms-full.txt): Complete parameter reference, response schemas, code examples, pagination, error handling — everything an agent needs in one file
- [OpenAPI 3.0 Specification](/openapi.json): Machine-readable API schema for code generation and tool integration
- [Interactive Documentation](/docs): Browser-based API explorer with try-it-out functionality

## Endpoints

- GET /api/companies: Retrieve newly registered companies by date, with filters for state, city, legal form, register type, name search, and more
- GET /api/stats: Get available dates and company counts for data availability checks

## Authentication

Bearer token via `Authorization: Bearer nrg_...` header. All keys have the `nrg_` prefix.

## Quick Example

```
GET /api/companies?date=2026-03-24&state=by
Authorization: Bearer nrg_your_api_key
```

## Base URL

https://handelsregister.callsync.de