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Integrations & interfaces

Integration for every business process

Connect systems efficiently with Nuclos: data, applications, and decisions in continuous workflows, not only technical point-to-point links.

Grown islands of shop, inventory, and accounting lose efficiency as soon as the same data is maintained twice. Nuclos connects systems and users into one process. Open source, without vendor lock-in.

  • REST API
  • DATEV, e-invoicing, webshops
  • Open Source Made in Germany
  • Extensible without lock-in
Book a consultation Dev portal

What integration means in Nuclos

Three angles: continuous processes, an open REST API, and standard connectors you can extend when needed.

Continuous processes instead of islands

We review your applications, find gaps, and connect data, systems, and users into one flow. Less duplicate entry, more transparency.

  • Close gaps between shop, warehouse, and finance
  • Keep status and stock visible to the team
  • Process digitalization across system boundaries

API-first: REST as the central entry

The generic REST API is generated from configuration. Read and write access to modeled objects, a unified schema, extensible for your own clients.

  • GET, POST, PUT, DELETE on modeled objects
  • Consistently generated and easy to test
  • Documented in the open dev portal

Standard connectors out of the box

DATEV, e-invoicing, webshops, logistics, and scanners are ready. Missing connectors are built individually, without waiting on a vendor.

  • Finance: DATEV, banking, XRechnung, and ZUGFeRD
  • Retail: Shopify, WooCommerce, Amazon
  • Logistics: carriers, EDI, barcode, and shop-floor capture

Why integration is more than interfaces

Performance, consistent data, transparency, and extensibility. The technical connection follows the process.

Performance

Less manual work and waiting. Data flows where the process needs it, without re-entry.

Accuracy

Consistent data across systems. Fewer mismatches between shop, warehouse, and accounting.

Transparency

Status, stock, and open items stay visible. Decisions rest on the current state.

Flexibility

Modular and extensible for new applications and processes. Source code and decision rights stay with you.

  • Schlüter Baumaschinen
  • BMW
  • Telekom
  • Landeshauptstadt München
  • Rhenus
  • Deutsche Glasfaser
  • BusinessBike
  • knoell
  • ARCD
  • heatsystems
  • PolyMedics Innovations
  • Stüker Möbelteile
  • Kickbyte
  • NGN Fiber Network
  • Schleiftechnik Neururer
  • Dr. Höhn
  • ZWP Anlagenrevision
  • ROGGE Schilder
  • ISD
All references

Interfaces at a glance

Eleven standard connectors out of the box, REST as the entry point, always extensible with your own interface.

Finance & communication

Documents, master data, and messages flow into finance processes. Relevant for high volumes and public-sector work.

Retail & e-commerce

Orders, customer data, and stock sync both ways. Shop and ERP share the same state.

  • Webshops: Shopify, WooCommerce, and others. Orders, customer data, stock, and status in both directions
  • Amazon: import orders, trigger order and shipping confirmations, reconcile warehouse stock
Logistics & production

Shipping, EDI, and capture on the line. Tracking and feedback land in the ERP, not in island tools.

  • EDIFact: message exchange with suppliers and logistics partners for orders, despatch advice, and invoices
  • Logistics: DHL, UPS, Schenker, and others. Labels, tracking numbers, and delivery information in ERP
  • Barcode & QR scanners: real-time capture for warehouse, production, and retail
  • Shop-floor data capture: feedback on operations, times, material consumption, and machine status

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
API documentation in the dev portal

Continue with Nuclos Enterprise

Integration in a fixed-price project on agreed scope. Missing standard connectors are built API-first, without vendor lock-in.

Nuclos Enterprise

And my interface?

Where the standard list ends is where Nuclos begins.

  • A required interface is missing from the overview?
  • Connect legacy or industry software without a modern API?
  • Bring specialized devices, scanners, or shop-floor capture into the process?
  • Custom integrations with fixed scope, price, and date?
  • Control data flows centrally and keep them GDPR-compliant?

Yes. That is exactly what Nuclos is built for.

Nuclos is API-first and fully open. Missing standard connectors are built on the REST API, including legacy systems and specialized devices. Scope, price, and delivery date are fixed before you start.

Book a consultation

What is ERP integration?

ERP integration connects data and workflows across system boundaries. Not only export and import, but a shared process.

Many projects start with how system A and B can be connected. In practice, these are grown islands: inventory, shop, and accounting running side by side. Anyone who captures orders in the shop and later only transfers the same data loses the biggest efficiency gains.

We review your applications, identify gaps, and connect data, systems, and users into one continuous process (opens in new tab). Nuclos stays the hub: REST and standard connectors out of the box, custom extensions without vendor lock-in.

Island systems
Nuclos

Approach

Approach: Island systems

Point-to-point interfaces between island solutions

Approach: Nuclos

Processes across system boundaries, Nuclos as the hub

Data

Data: Island systems

Duplicate entry, mismatched stock and status

Data: Nuclos

Consistent data flows, status and stock visible

Extension

Extension: Island systems

Waiting on the vendor or expensive one-off projects

Extension: Nuclos

REST and standard connectors, custom links when needed

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 named on this page 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.
How do I start an integration with Nuclos?
With a consultation or the requirements specification for scope clarity. For a productive start, Nuclos Enterprise on agreed scope is the right path.

More platform pages

Business processes, CRM, and document management in the same ERP.

Business processes

Warehouse, finance, and projects as the starting point. Adapted with low-code.

View business processes

Open-source CRM

Pipeline, quotes, and customer master on the same data foundation as orders and finance.

View CRM

Document management

Version, approve, and archive documents on the transaction with auditability.

View DMS

Planning an integration?

We discuss your landscape, priorities, and a sensible starting point. Nuclos Enterprise delivers on agreed scope.

Book a consultation Requirements specification

Open Source · Made & hosted in Germany · 25+ years of Nuclos