Integration made possible
Discover resources to help you build applications and connectors using ADP® APIs
Integrations to fit your use case
Discover common integration flows with ADP APIs based on your business use case as a solution provider - and accelerate your integration with targeted guides.
Human Resources
Workforce Hiring to Retirement
Payroll Management
Earnings, Deductions, Tax Withholding and Payroll Results
Time & Labor Management
Time & Attendance, Workforce management
Recruiting
Job Requisitions, Job Applications and Assessment
Benefit Management
Employee Benefit and Insurance Management
Compliance Solutions
Verifications and Tax Credits
Learn and build
Build integrations with foundational tools and guides, and explore APIs by ADP product.
Integration foundations
Tools and guides
Product guides
Step-by-step implementation guides to help you build integrations to a specific ADP product
Marketplace guides
Learn how to setup your listing on our digital storefront and how ADP authenication and authorization models work
Key concepts
Learn about authenication, single-sign on and our digital storefront platform
Developer Libraries
Simplify connectivity and authenication using your preferred code language
Stay up-to-date with the latest content
Stay informed as we constantly evolve and innovate on the ADP Marketplace platform.
Popular Content
Generating a Certificate Signing Request
Describes the steps for generating a CSR using OpenSSL.
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Making Your First API Call Using Postman
Instructions on how to use Postman to make your first API call to ADP.
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Worker Management API Guide for ADP Workforce Now
Describes how your application can access and manage information about workers in the ADP Workforce Now application.
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What are ADP Client Connection Libraries?
The ADP Client Connection Library is intended to simplify and aid the process of authenticating, authorizing and connecting to the ADP API Gateway. The library includes a sample application that can be run out-of-the-box to connect to the ADP API test gateway.
ADP Client Connection Library supports OAuth2 Authorization Code and Client Credentials flows. ID token retrieval via OpenID Connect based Authorization Code flow is also supported. The following table shows the availability of the library for various languages.
As of June 2022, ADP no longer provides support for code libraries for various programming languages. The code must be created and written by the audience of these articles.
Connection Library Repos
Language
Guide
Node.js
NodeJS Developer Library Guide
Java
Java Developer Library Guide
.NET
.NET Developer Library Guide
Python
Python Developer Library Guide
PHP
PHP Developer Library Guide
Ruby
Ruby Developer Library Guide
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Additional Earnings API Guide for ADP Workforce Now
Used to add, update, or get an employee's additional remuneration details.
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Worker.Hire API Guide for RUN Powered by ADP
Implemented to support onboarding of new employee or contractor
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