ADP Workforce Now API
Workforce Now has REST APIs on the ADP Developer Portal, gated behind the paid API Central add-on (Marketplace SKU 410612) that each customer must buy. Auth is OAuth 2.0 over mTLS with ADP-issued certificates, and every client instance needs separate credentialing and consent setup.
Frequently asked questions
ADP Workforce Now scores A+ on Supergood's API Report Card. Workforce Now has REST APIs on the ADP Developer Portal, gated behind the paid API Central add-on (Marketplace SKU 410612) that each customer must buy. Auth is OAuth 2.0 over mTLS with ADP-issued certificates, and every client instance needs separate credentialing and consent setup.
ADP Workforce Now has a workable official integration path. Most engineering teams can build against it directly. Open API: self-serve, documented, with SDKs
ADP Workforce Now is Automatic Data Processing's flagship cloud Human Capital Management (HCM) suite for mid-sized employers, unifying payroll, tax filing, HR administration, benefits administration, time and attendance, talent acquisition, performance, learning, compensation, and analytics into a single platform.
Vertical: Enterprise HR / ERP (specifically mid-market HCM / payroll). Running scheduled and off-cycle payroll with federal, state, and local tax calculation, filing, and W-2/1099 generation. Direct deposit, paycards (Wisely), garnishments, and same-day pay (Earned Wage Access).
10/10 within U.S. mid-market HCM/payroll. ADP pays roughly 1 in 6 U.S. workers, has ~1.1M total clients, and Workforce Now alone is reported to serve well over 100,000 mid-market employers.
Yes - ADP Workforce Now is the canonical system of record for payroll, tax, benefits, and workforce data at tens of thousands of mid-market U.S. employers.
~15+ years as 'Workforce Now' (ADP itself founded 1949).
ADP API Central is a separately-purchased paid product with per-employee monthly fees on the ADP invoice - integration is not free or self-serve. Per-customer provisioning is 'the biggest onboarding bottleneck' for multi-tenant SaaS vendors - every client must independently buy API Central and complete credentialing. Full sourced list under Sources below.
Common alternatives include Paychex Flex, Paycom, Paylocity, Workday HCM, UKG Pro / UKG Ready, Paycor. Graded alternatives appear under "More from the report card" below.
Supergood's grades measure one thing: can a customer's engineering team get their own data out programmatically? Supergood checks six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and rolls them into a letter grade. Supergood re-verifies grades, and they only move on evidence.
Not that we could find. As of August 2026 there is no official ADP Workforce Now MCP server in any public registry, and no maintained community server we're aware of. We re-verify this periodically — report an inaccuracy below if we missed one.
Not natively. ADP Workforce Now doesn't publish an MCP server, so MCP clients like Claude, Cursor, and Codex have nothing to connect to out of the box. If that changes, this page will reflect it.