Authentication and permissions are often the most fragile part of ADP integrations, especially for PTO workflows, but Versori AI eliminates this complexity by intelligently managing scopes, tokens, and security, so teams can focus on delivering great employee experiences instead of wrestling with OAuth.
If you’re an ADP user or thinking about migrating to ADP for your payroll and HRIS, there are some key aspects to consider before beginning your integration project.
ADP offers rich APIs for workforce management, but when it comes to specific workflows, such as PTO, authentication and permissions becomes an invisible wall if not handled correctly!
This article will explore key challenges with ADP authentication, with a concentration on PTO specific workflows, as this is one that we get asked about often. It will also cover Versori AI’s solution to overcome this barrier.
ADP’s Complex Authentication Model
ADP uses OAuth2.0 as the primary mechanism for authorising access to its APIs and data, which is standard. The real complexity lies in the scope management and tenant specific authorisation.
Scope fragmentation
ADP APIs are segmented into granular scopes, looking at PTO specifically, this spans across multiple scopes, including worker, leave, balance, time off request, worker profile, and so on.
Getting access to the correct scopes can be a long process and is oftentimes poorly documented.
Short access token cycles
ADP access tokens have a default cycle of 60 minutes, meaning every hour they have to be re-obtained.
Many integrations fail due to expired credentials or improper refresh logic.
Unclear error messaging
This can make it difficult to identify and resolve issues.
When an integration fails due to a missing scope or revoked permission, ADP often returns vague or misleading errors, making debugging difficult and slowed development.
How Versori AI Solves This
Versori AI is built to abstract away this complexity, here’s how it addresses these challenges:
Agentic intelligence to pre-configure ADP connectors
Versori utilises model context protocol (MCP) for its research agent to scrape the web and conduct deep research to find the correct scopes and documentation for a user’s specific requirements.
This includes token refresh logic automatically, meaning manual handling of tokens and configurations is handled right out the blocks.
The AI can dynamically request the correct permissions based on use-case intent, such as balance reads, request creation and accrual history, removing the element of guess work.
Transparent logging and monitoring
Logs in Versori AI are easily readable, including smart alerts when token errors or permission issues arise, reducing time-to-diagnosis from hours to minutes.
Versori AI also includes transformation mapping documents, allowing users to understand and read how each data attribute is being used in the integration, accelerating troubleshooting and validation.
Security and compliance built in
All authentication flows are SOC2 and GDPR compliant
Role-based access controls ensure only authorised systems and users can access sensitive HR related data.
Authentication and permissions are often overlooked when it comes to building ADP integrations, but they’re often the most fragile aspect. With Versori AI, developers and consultants no longer need to be experts in the nuances of OAuth2.0 just to fetch PTO requests.
Instead, they can focus on delivering employee experience excellence, whilst Versori handles the nitty-gritty.
ADP Integration Masterclass
Versori is co-hosting an ADP Integration Masterclass with long-standing partners, BigTime Software on the 9th of July.
Here’s what you can expect:
Building an ADP integration with Versori AI
A real life example from our partner, BigTime and how Versori delivered value for one of their end customers
.png)
.png)
.png)
.png)
.png)
.png)
.png)