Authenticate to ADP using OAuth2 client_credentials with mTLS certificate as required by the ADP platform
After payroll is processed, call the ADP payroll output or general-ledger API endpoint to retrieve the payroll run summary for the pay period
Extract gross pay, tax withholdings, employer taxes, and deduction line items by cost center or department from the payroll output
Map ADP cost center codes to your GL account codes using a configuration table maintained in your system
POST journal entries to your accounting system (e.g., NetSuite, QuickBooks) grouping debits (payroll expense by department) and credits (payroll liability and bank accounts)
Reconcile the total net pay disbursed against the bank ACH batch total before closing the GL period
Known gotchas
ADP Workforce Now payroll output API access requires specific API products to be enabled on your ADP account — confirm entitlement with your ADP account manager before development
Cost center and department mappings in ADP are customer-configurable; do not hardcode them — retrieve them via the organizational hierarchy API or maintain a mapping table editable by the client
Journal entry posting order matters — post payroll liabilities before disbursement credits to avoid temporary negative balances in the GL during reconciliation
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp