---
title: "Developer guide to get employee data from IRIS Cascade API"
description: "Learn how to retrieve employee data from IRIS Cascade API with Python. Includes endpoints, sample code, common pitfalls, and FAQs. Simplify your HR integrations with Knit."
source_url: "https://www.getknit.dev/blog/developer-guide-to-get-employee-data-from-iris-cascade-api"
page_type: "blog"
---

_This is an educational blog post from Knit's blog: “Developer guide to get employee data from IRIS Cascade API”._

# Developer guide to get employee data from IRIS Cascade API

### Introduction

This article is part of our in-depth series on the **HRIS API**. In this guide, we’ll walk through how to **retrieve employee data** from IRIS Cascade, covering endpoints, prerequisites, sample code, and common troubleshooting tips.

If you’d like a deeper look at authentication, rate limits, and other use cases, check out our full list of [HRIS API Guides](https://www.getknit.dev/blog/full-list-of-knits-hris-api-guides).

The **IRIS Cascade API** provides endpoints that let you retrieve detailed employee information from basic personal details to department, position, and status. You can query data for a **single employee** or retrieve **all employee records** in bulk.

### Prerequisites

Before you begin, make sure you have:

*   Access to the **IRIS Cascade API** with valid credentials.
*   A **Python** environment with the `requests` library installed.
*   Proper authorization tokens (usually a Bearer token).

### API Endpoints

*   **Get all employees:** `GET /employees`
*   **Get a specific employee by ID:** `GET /employees/{id}`

#### 1\. Retrieve All Employees

```
import requests

url = "https://yourdomain.com/api/employees"
headers = {"Authorization": "Bearer YOUR_ACCESS_TOKEN"}

response = requests.get(url, headers=headers)
if response.status_code == 200:
    employees = response.json()
    print(employees)
else:
    print("Failed to retrieve employees")
```

`    `

#### 2\. Retrieve a Single Employee by ID

```
import requests

employee_id = "12345"
url = f"https://yourdomain.com/api/employees/{employee_id}"
headers = {"Authorization": "Bearer YOUR_ACCESS_TOKEN"}

response = requests.get(url, headers=headers)
if response.status_code == 200:
    employee = response.json()
    print(employee)
else:
    print("Failed to retrieve employee")
```

`    `

### Common Pitfalls and How to Avoid Them

1.  **Incorrect endpoint URL:** Double-check your base URL and path before sending a request.
2.  **Expired or invalid tokens:** Refresh your token regularly or implement automated token rotation.
3.  **Ignoring pagination:** Large datasets are often paginated; use `$top` and `$skip` parameters.
4.  **Uncaught errors:** Always handle `4xx` and `5xx` responses to log and debug effectively.
5.  **Rate limit breaches:** Respect API rate limits and add retry mechanisms.
6.  **Incorrect employee ID format:** Ensure IDs match the expected format defined by your HR system.
7.  **SSL or network errors:** Configure secure connections and handle connection exceptions gracefully.

### Frequently Asked Questions

**1\. What is the maximum number of employees I can retrieve in one request?**  
You can fetch up to **250 employees** per request using the `$top` query parameter.

**2\. How can I handle pagination for large datasets?**  
Use `$skip` and `$top` parameters to iterate through the employee list efficiently.

**3\. Can I filter the employee data?**  
Yes, apply the `$filter` parameter to retrieve employees based on specific attributes like department or job title.

**4\. What data formats does IRIS Cascade support?**  
The API supports **JSON** and **XML** response formats. JSON is recommended for most integrations.

**5\. How do I authenticate my API requests?**  
Include a **Bearer token** in the `Authorization` header of every request.

**6\. What if I receive a 401 Unauthorized error?**  
This usually means your token has expired or is invalid. Generate a new one and try again.

### Integrating IRIS Cascade with Knit

Instead of building and maintaining your own integration, **Knit API** lets you connect to IRIS Cascade in minutes. With a single integration, Knit manages:

*   Authentication and token refresh
*   Data synchronization
*   Error handling and maintenance

For developers who want to avoid maintaining HR integrations and focus on product innovation, [**Knit**](https://www.getknit.dev/integration-categories/hrms-api) provides a unified, reliable, and scalable way to connect to IRIS Cascade and other HRIS systems effortlessly.


## Related pages

- [How Knit works](https://md.getknit.dev/how-knit-works)
- [Unified API product](https://md.getknit.dev/products/unified-api)