Jack Henry Silverlake API
SilverLake integrates through jXchange, a SOAP API with 200+ services publicly documented at jackhenry.dev and mid-migration to REST by July 31, 2026. A free developer account gets sandbox access, but production requires a VIP agreement, certification, and a sponsoring bank.
Frequently asked questions
Jack Henry Silverlake scores F on the API Report Card. SilverLake integrates through jXchange, a SOAP API with 200+ services publicly documented at jackhenry.dev and mid-migration to REST by July 31, 2026. A free developer account gets sandbox access, but production requires a VIP agreement, certification, and a sponsoring bank.
Without a usable official API, teams fall back on manual exports, file drops, or one-off vendor integrations. The other option is an unofficial API layer like Supergood that automates the authenticated web app directly.
SilverLake System is Jack Henry & Associates' flagship core banking platform for growth- and commercial-focused community and mid-tier banks.
Vertical: Financial Services (core banking, deposits, lending, payments, back-office automation). Running the bank's core ledger and posting engine for deposits, loans, GL, and customer information in (near) real time on IBM Power i.
Very high inside U.S. mid-tier community banking, but a smaller absolute footprint than Jack Henry's credit union core (Symitar Episys).
Core deposit, loan, and GL ledger entries for every transaction across ~425 SilverLake banks. Consumer, small business, and commercial account balances, transaction history, and statements.
SilverLake traces back to the 1980s/1990s IBM AS/400 (now IBM Power i / IBM i) era and has been continuously developed for ~30+ years.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial Jack Henry Silverlake API and MCP server so AI agents and internal tools can read and write Jack Henry Silverlake data. See the Jack Henry Silverlake integration docs at supergood.ai/docs/jack-henry-silverlake-api.