API Access
With ADP API Central, developers can securely integrate your organization’s HCM data with your internal and third-party business systems. Developers can select from a robust library of APIs that will suit your needs and begin building custom integrations to simplify and automate your business processes.
Your developers can use these APIs to build custom integrations that send and receive data between ADP and other systems, making it easy to:
- Synchronize employee job titles, email addresses and demographic data between systems.
- Automate user provisioning between your systems when new hires are onboarded.
- Keep your timecards, work schedules, and time-off requests and balances updated between ADP and your timekeeping system.
- And much more — refer to our Developer Resources for a full list of available APIs.
Developer Resources
Get all the resources you need to help develop custom applications and data connectors using ADP APIs. Our comprehensive developer portal at developers.adp.com gives developers access to robust API documentation, code samples, developer libraries, how-to articles and more.

Security Certificate Management
Easily request and manage your security certificates. Once you make a request, the certificate is auto-signed in real time, so developers can begin using APIs immediately.
Developers will receive notifications beginning 60 days before the certificate expires to ensure seamless integration with no interruption.
API Developer Support
Have API-related questions as you build your integration? Developers can file support tickets directly through the API Central portal and get a response from our API experts, without HR practitioner approval.
Data Security
API Central leverages OpenID Connect and OAuth 2.0 authentication and authorization to ensure only authorized users and systems can access the data available via APIs. Regular security assessments and continuous monitoring ensure an ongoing focus on data security and integrity.
Consulting Services
Expert resources are available to guide you through your custom development efforts. Consulting includes selecting appropriate APIs for your projects, guidance on interacting with the applications you’re integrating with, and development best practices to drive a project to completion quickly.