Integration for every business process
Connect systems efficiently: Nuclos links data, applications, and decisions in integrated workflows.
For us, integration is more than technical interfaces. We analyze your landscape, remove media breaks, and implement connections that run reliably in day-to-day operations.
- Open source & REST API
- DATEV, e-invoicing, webshops
- Made & hosted in Germany
- Extensible without vendor lock-in
Integration is more than interfaces
Connected processes across your systems, not isolated technical point solutions.
Many projects start with how to connect system A to system B. In practice, it is grown island systems: inventory management, a shop, and accounting running side by side instead of together. Anyone who enters an order in the shop and later re-enters the same data in accounting or the warehouse loses time and risks mistakes.
We review your existing applications, identify exactly these gaps, and connect data, systems, and users into one continuous process (opens in new tab). Less manual work and waiting time improve performance, consistent data without duplicate entry ensures accuracy, and status, inventory, and open items stay visible at all times for more transparency. The solution stays modularly extensible for more flexibility as new applications and processes emerge, while centrally controlled, GDPR-compliant permissions keep data protection in place.
How we support you
When goals are clear but the workflow is not: we translate requirements into processes and interfaces.
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Landscape analysis
Together we review applications and identify where data is maintained twice, processes need manual coordination, or information is inconsistent.
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Interface design
Based on the analysis, we define which systems communicate, which data flows, and how processes should be automated.
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Implementation
Interfaces are built in Nuclos. We use existing APIs where they fit; custom connections are developed when needed.
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Evolution & adaptation
New applications and changed processes are normal. Integrations can be extended and adjusted at any time.
Typical integration examples
From mid-market projects: finance, retail, logistics, and custom sales processes.
Finance & accounting
DATEV and banking connections for automated document transfer, account reconciliation, and payments.
E-invoicing & electronic documents
XRechnung and ZUGFeRD for compliant invoice processes, including public-sector requirements.
Webshops & e-commerce
Synchronization of orders, customer data, and product data with Shopify, WooCommerce, Amazon, and custom shops.
Reference
Kickbyte built individual inventory management on Nuclos with shop integration and automated order processing.
View Kickbyte referenceLogistics & shipping
Transfer of shipping data, tracking, and warehouse movements to DHL, UPS, Schenker, and other providers.
Reference
Rhenus AL Ingolstadt runs warehouse stock and partner connections on Nuclos in real time.
View Rhenus AL Ingolstadt referenceBarcode & scanners
Scanner connections for warehouse, production, and retail: capture and post goods movements in real time.
Sales & custom configuration
Connecting sales, project management, and the shop system for customer-specific configurations, with automated quote and invoice processes.
Reference
Schlüter Baumaschinen has generated over 15,000 custom quotes with Nuclos since 2012.
View Schlüter Baumaschinen referenceInterfaces at a glance
Eleven standard connectors out of the box, always extensible with your own interface.
REST interface
Nuclos is API-first: the generic REST API is the central entry point for integrations and stays open for your own extensions from day one. It provides read and write access to every modeled object, with a unified schema and endpoints for GET, POST, PUT, and DELETE. Generated directly from the configuration, it stays consistent, extensible, and easy to test.
GET /rest/bos/customers # Fetch customer data POST /rest/bos/customers # Create a new customer PUT /rest/bos/customers/42 # Update customer with ID 42 DELETE /rest/bos/customers/42 # Delete customer with ID 42
Finance & communication
XRechnung & ZUGFeRD
Import and export for electronic invoices (opens in new tab), automatable and compliant. Relevant for high invoice volumes and public-sector clients.
DATEV
Structured exchange of master data and documents (opens in new tab) in DATEV format. Documents and posting data reach finance without extra transformation.
Banking & finance
Interfaces for account reconciliation, direct debit, and transfers. Data is validated, transferred securely, and embedded in finance processes.
Automated sending of invoices, notifications, and status updates directly from processes, traceable in the system.
Retail & e-commerce
Webshops
Connection of Shopify, WooCommerce, and other shops. Orders, customer data, stock, and status flow both ways.
Amazon
Import incoming orders, trigger order and shipping confirmations, reconcile warehouse stock automatically.
Logistics & production
EDIFact
Standardized message exchange with suppliers and logistics partners for orders, despatch advice, and invoices.
Logistics
Shipping processes with DHL, UPS, Schenker, and others: labels, tracking numbers, and delivery information in ERP.
Barcode & QR scanners
Real-time capture for warehouse, production, and retail. Post receipts, issues, and stock movements automatically.
Shop-floor data capture
Connect shop-floor devices to Nuclos: feedback on operations, times, material consumption, and machine status for planning and reporting.
… and your interface
Nuclos is API-first and fully open. Custom integrations, industry interfaces, and specialized devices can be added without vendor lock-in.
Frequently asked questions about integration
Answers on interfaces, the REST API, and custom integrations for IT and leadership.
- How long does it take to connect a new interface?
- The standard connectors are quick to activate through configuration. We plan custom integrations as their own project, with a fixed scope, price, and delivery date.
- Is the REST API publicly documented?
- Yes. The REST API is part of the open dev portal, with references and examples for developers and IT teams. It is generated directly from your configuration and can be extended from there.
- What happens if an interface isn't on the list?
- Nuclos is API-first and fully open. If a standard connector doesn't exist yet, we build it on the REST API, without waiting on an external vendor.
- How secure is data transfer between systems?
- Data flows run through defined, logged interfaces. Permissions and transfer paths are centrally controlled and support GDPR-compliant operations.
- Can legacy or industry-specific systems be connected too?
- Yes. We review your existing systems and data flows and build the right connections, including for legacy systems without a modern interface.
Planning an integration?
We discuss your landscape, priorities, and a sensible starting point.
Open Source · Made & hosted in Germany · 25+ years of Nuclos