# ADP AI automation and integrations > ADP can be automated, but API access is restricted. Customers usually need a paid API access add-on such as ADP API Central for Workforce Now, and software vendors must join the ADP Marketplace partner program. Connections use OAuth client credentials plus a client certificate. Plan for that approval in the timeline. The best AI uses are onboarding hand-offs, timesheet review, pre-payroll checks and HR policy questions. - Category: HR & Recruiting - Vendor: https://www.adp.com/ - How to connect: ADP APIs through API Central (customers); ADP Marketplace partner APIs (vendors); n8n HTTP Request node; Scheduled report exports - Authentication: OAuth 2.0 client credentials combined with a mutual TLS client certificate issued or registered through ADP - Notes: API access usually requires a purchased add-on or partner certification, and each client's credentials are set up separately. Client certificates expire and must be renewed, so track the expiry date. Product lines such as RUN and Workforce Now have different API coverage. - Last updated: 2026-10-14 ## What you can automate with ADP - **New hire hand-off from your ATS.** When a candidate is hired, prepare ADP onboarding data from the offer and send HR a checklist to confirm before it is entered. Guide: https://www.lumeor.studio/guides/automate-employee-onboarding/ - **Offboarding coordination.** On termination, remove system access, collect equipment and notify payroll and benefits contacts, with every step logged. Guide: https://www.lumeor.studio/guides/automate-employee-offboarding/ - **Timesheet exception review.** Flag missing punches, unapproved overtime and unusual hours before the payroll cutoff and route them to the right manager. Guide: https://www.lumeor.studio/guides/automate-timesheet-and-pto-approvals/ - **Pre-payroll variance check.** Compare this period's payroll register to prior periods and explain the differences for the approver in plain English. Guide: https://www.lumeor.studio/guides/automate-internal-approvals/ - **HR policy assistant.** Answer employee questions about pay dates, leave and benefits from your handbook so HR is not the first line of support. Guide: https://www.lumeor.studio/guides/ai-hr-policy-assistant/ - **Account provisioning from ADP.** Create and remove accounts in Microsoft 365 or Google Workspace from ADP worker status, department and job title. Guide: https://www.lumeor.studio/guides/automate-user-provisioning/ ## What makes ADP hard to automate ADP serves companies of every size through different products, such as RUN for small businesses and Workforce Now for mid-sized companies, and their APIs differ. The APIs themselves cover workers, payroll inputs, time and attendance, and more, but access is the bottleneck. Customers typically purchase an API access option such as API Central, software vendors must be certified through the ADP Marketplace, and every connection requires OAuth client credentials plus a client certificate for mutual TLS. None of that makes ADP a bad automation target. It makes the start slower. We put API access on the project plan as its own step, with ADP's timelines, before promising a launch date. ## The AI layer Payroll accuracy matters more than speed, so AI stays in review and support roles: - **Catching problems before cutoff.** Reading timesheets and payroll changes and explaining anything unusual to the approver. - **Hand-offs.** Turning an offer letter and ATS record into clean onboarding data for HR to confirm. We cover the hand-off in [how to automate employee onboarding](/guides/automate-employee-onboarding/). - **Employee questions.** An [HR policy assistant](/guides/ai-hr-policy-assistant/) that answers from your documents, so HR handles exceptions rather than routine questions. Pay rates, tax elections and bank details are never changed by a model. ## Limits to plan around - **Access approval.** Budget weeks for API access, credential issuance and any certification. This is usually the longest lead time in the project. - **Certificates.** The mutual TLS certificate and private key must be stored securely, and certificates expire. Set a renewal reminder. - **Product differences.** RUN, Workforce Now and other ADP products expose different data. Confirm your product's coverage before scoping. - **Data sensitivity.** Payroll and identity data need least-privilege access, encryption and access logs. - **Fallback path.** If API access is not possible, scheduled report exports still support many automations. ## How Lumeor typically connects it We confirm the client's ADP product and API options first. Where API access is available, we connect self-hosted n8n through HTTP Request nodes configured with the client certificate, and run approvals in [Microsoft Teams](/tools/microsoft-teams/) or Slack. Where it is not, we automate from scheduled ADP report exports and keep ADP as the system people update by hand. An [AI readiness assessment](/ai-readiness-assessment/) is a good way to sort which HR processes are worth automating before you pay for API access. ## Frequently asked questions ### How do I get API access to ADP? For your own company, ask your ADP representative about API Central or the API access option for your product. ADP sells API Central as a purchasable option, and which ADP products it covers varies, so confirm yours. Software vendors serving many ADP clients join the ADP Marketplace partner program and go through certification. Either way, expect approval and credential setup to add weeks to a project. ### Can I automate ADP without the API? Partly. Many teams start with scheduled report exports from ADP to a secure folder, then automate everything downstream, such as approvals, summaries and provisioning. It is less real-time, but it avoids the API approval process and is often enough for reporting. ### Does n8n or Zapier connect to ADP? n8n has no built-in ADP node. Once you have API credentials and a client certificate, the HTTP Request node can call ADP's APIs, though certificate handling needs careful setup. Check Zapier's and Make's directories for current ADP coverage, which tends to be limited and still depends on your ADP API access. ### How do we keep ADP payroll data safe in AI workflows? Scope credentials to the data each workflow needs, keep the client certificate and secret in a secure credential store, and avoid sending pay, tax or bank data to a model unless a use case requires it. Self-hosted n8n keeps the data path inside your environment. --- Source: https://www.lumeor.studio/tools/adp/ Published by Lumeor Studio, Newtown, PA. hello@lumeor.studio. Get a written scope: https://www.lumeor.studio/start/