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e-manage|ONE API

API Overview

The e-manage|ONE API allows you to securely connect e-manage|ONE with the other tools your business relies on. Whether you’re integrating with CRMs, accounting systems, marketing platforms, or internal applications, our API enables data synchronization, workflow automation, and custom business logic.

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Designed for flexibility and scalability, the API supports both small automations and large-scale enterprise integrations.

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👉 Full technical documentation lives in our Help Guide


Each section below links directly to the latest official resources.

What is the e-manage|ONE API?

An API (Application Programming Interface) is a way for software applications to communicate with each other. Think of it as a secure digital handshake between systems, allowing them to exchange data and trigger actions without manual input.
 

With the e-manage|ONE API, you can:
 

  • Connect with third-party tools like CRM, ERP, or marketing platforms

  • Automate workflows and reduce manual data entry

  • Build custom features or integrations tailored to your business

  • Sync data in real time between e-manage|ONE and other systems

  • Extend your environment with internal or external development partners

  • Power no-code automations through Zapier and other integration tools
     

Whether you're working with your internal team or external developers, the e-manage|ONE API gives you the flexibility to build smart, scalable solutions that fit the way your business operates.

Accessing the API

To ensure security and data integrity, API access is granted upon request. Submit a Support Desk request to obtain your API key. A one-time secure link will be provided upon approval.

You can request either:
 

  • Developer API Key – for custom integrations

  • Zapier API Key – specially configured for Zapier workflows
     

🔗 Submit a Support Request to Request API Access

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API Tutorial & Documentation

Documentation

We maintain all technical documentation — including tutorials, authentication steps, endpoint references, and code samples — inside our Help Guide so it stays accurate and always up to date.
 

  • API Tutorial – Getting started, authentication, first API call

  • API Documentation – Full endpoint reference, schemas, errors

  • Webhooks Guide – Real-time notifications for data changes

  • Best Practices – Security, performance tips, pagination, caching

  • OpenAPI Specification – For generating client libraries
     

🔗 View the Full Interactive Documentation

Web Hooks (Real-Time Notifications)

​Keep external systems instantly in sync without polling. Use webhooks to receive push notifications when records change (Projects, Customers, Invoices, and more).

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Visit the Webhooks section of our Help Guide for:

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  • How to create and manage webhook subscriptions

  • Security & signature verification

  • Retry logic and delivery guarantees

  • Supported tables and event types

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🔗 Webhooks Documentation

Open API Specification

Developers can generate strongly-typed client libraries in many languages. Our OpenAPI specification is available at:

https://api.emanageone.com/openapi/combined.json

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Instructions for generating client libraries are included in the Help Guide:
 

🔗 View Client Library Instructions

Best Practices & Security

​Protecting your data is our top priority. API keys must be stored securely and treated like passwords. The API Help Guide includes detailed best practices on:

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  • API key security & rotation

  • HTTPS-only communication

  • Rate limiting

  • Error handling

  • Idempotency

  • Pagination & caching strategies

Support & Integration Guidance

If you need help planning an integration or have questions about the API:

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  • Submit a ticket via the Service Desk

  • Our team can help guide best practices, answer questions, or review potential workflows
     

🔗 Open the Service Desk

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