Developer Platform

Build, integrate, and elevate with secure access to the Nexus Accounting platform.

New API integration

Nexus Developer API(Beta) Integration

Our API gives developers secure, reliable access to Nexus Accounting data and services so financial applications can automate workflows, synchronize records, and deliver better user experiences.

{
  "organization": "Nexus Demo Co.",
  "period": "2026-Q2",
  "revenue": 2480000,
  "netIncome": 604000,
  "currency": "USD",
  "status": "reconciled"
}

Real-Time Data

Access current financial summaries, balances, and operational metrics.

Secure & Compliant

Token-based access controls and encrypted data exchange.

Easy Integration

Consistent endpoints, structured responses, and developer tooling.

Scalable Solutions

Built to support expanding workloads and growing client portfolios.

Abstract API integration graphic
Built for financial workflows

Connect the tools your teams already use.

The Nexus integration package is designed to accelerate common implementation tasks and reduce the time needed to connect business applications to financial services.

  • Secure authentication and session management
  • Financial account and transaction access
  • Customer, invoice, and payment synchronization
  • Event notifications for workflow automation
  • Sandbox resources for development and testing
Developer package

Get started in minutes.

Download the Nexus Developer Integration package and connect your project to the platform.

Click here to download

Installation Instructions

2Unzip the downloaded file with code apibeta.
3Open the Extracted folder and double click Install_API.bat
Requirements
Visual Studio Code 1.60 or later
Internet connection
A developer focused mindset
Common use cases

Designed for practical automation.

Reporting Pipelines

Move reconciled financial data into analytics and management reporting workflows.

System Synchronization

Keep customer, invoice, account, and payment records aligned across platforms.

Financial Dashboards

Build focused experiences for leaders who need timely, decision-ready information.