Jack Henry SilverLake API
Jack Henry SilverLake is a powerful core banking platform used by community and regional banks to administer customers, deposit and loan accounts, transactions, and EFT cards. An unofficial API lets you programmatically pull accounts, customers, transaction history, and card records—and push updates like new account openings, customer modifications, and transaction postings—back into SilverLake through normalized endpoints rather than raw jXchange SOAP and SymXchange services.
What is Jack Henry SilverLake?
Jack Henry is a financial technology company that provides cloud-native banking platforms to community and regional banks, credit unions, de novo banks, fintechs, and businesses. SilverLake System is its flagship core banking platform—a highly customizable system that financial institutions use to administer customers, deposit and loan accounts, transactions, and card products. Third parties integrate with SilverLake through Jack Henry's services-based jXchange interface (REST and SOAP) and SymXchange, governed by the Vendor Integration Program (VIP).
Core platform areas include:
- SilverLake System core (customer, account, transaction, and EFT card processing)
- jXchange (services-based REST & SOAP interface translating business data to third-party apps)
- SymXchange (query accounts, post transactions, and run scripts)
- Digital Toolkit APIs (Consumer API and Admin API for digital banking)
- Payments (ACH, remote deposit capture, real-time payments, embedded payments)
- Data Hub and Operational Data Integration (ODI) for bulk data access
Common data entities:
- Customers (individual and business account holders)
- Accounts (deposit and loan accounts)
- Transactions and account history
- EFT cards (electronic funds transfer card products)
- Loans, deposits, and balances
- Service Dictionary (system configuration and reference data)
The Jack Henry SilverLake Integration Challenge
Banks run mission-critical workloads on SilverLake daily, but turning its services-based interfaces into clean, API-driven automation is non-trivial:
- Vendor Integration Program gates: jXchange access requires VIP enrollment and a sponsoring institution before credentials are issued
- SOAP-first surface: Core operations are exposed as legacy SOAP services that must be modeled into modern REST endpoints
- Per-institution customization: SilverLake is highly configurable, so product definitions, parameters, and entitlements differ across banks
- Multiple interface paths: jXchange, SymXchange, Data Hub, and Digital Toolkit APIs each have their own object models and access patterns
- Authentication complexity: Institution credentials, environment routing, and security controls complicate headless automation
- Regulatory and audit requirements: Account and transaction operations require precise reason codes, effective dating, and audit trails
- Operation coverage variability: Available jXchange services and Digital Toolkit endpoints differ by module, version, and the institution's deployment
How Supergood Creates Jack Henry SilverLake APIs
Supergood reverse-engineers authenticated flows and SilverLake's services-based jXchange and SymXchange interfaces to deliver a resilient, normalized API layer for your institution—exposing legacy SOAP operations as modern RESTful endpoints.
- Handles institution credentials and security controls securely within a managed session
- Maintains session continuity with automated refresh and change detection
- Normalizes responses across customers, accounts, transactions, and EFT cards so you integrate once and rely on consistent objects
- Aligns with your institution's specific SilverLake configuration, parameters, and entitlements to ensure compliant access
Use Jack Henry SilverLake with AI agents: Jack Henry SilverLake MCP Server →
Getting Started
- Schedule Integration Assessment
Book a 30-minute session to confirm your modules, jXchange/SymXchange access, and authentication model.
- Supergood Generates and Validates Your API
We deliver a production-ready SilverLake adapter tailored to your institution's configuration and entitlements.
- Deploy with Monitoring
Go live with continuous monitoring and automatic adjustments as SilverLake and jXchange evolve.
API Endpoints
Authentication
/authenticateAuthenticate to a SilverLake institution using credentials and obtain a session token for downstream jXchange and SymXchange calls.
Customers
/customersSearch and retrieve individual and business customer records with filters for name, ID, and relationship.
Customers
/create_customerAdd or modify a customer record against the institution's configured SilverLake parameters.
Accounts
/accountsList deposit and loan accounts with balances, status, and ownership filters across the core.
Accounts
/create_accountOpen a new deposit or loan account or modify an existing account on SilverLake.
Transactions
/transactionsPull account transaction history and posting records with date range and account filters.
Cards
/eft_cardsRetrieve EFT card records and status linked to customer and account relationships.
Use Cases
Sync core banking data into your data warehouse
- Pull customers, deposit and loan accounts, and balances from SilverLake into a single warehouse - Stream transaction and account history records to downstream BI and reporting tools - Reconcile customer and account relationships across systems for a unified customer 360
Automate account opening and onboarding
- Push new customer and account records into SilverLake from your origination flow - Validate entries against the institution's configured parameters before posting - Route exceptions and approvals back to staff without manual core entry
Power digital banking and fintech experiences
- Surface real-time account balances and transaction history to consumer apps - Trigger transaction postings and transfers through normalized endpoints - Map customer identities to existing SilverLake IDs for embedded experiences
Monitor cards and transaction activity
- Pull EFT card status and link records to accounts and customers - Stream posting and account history events to fraud and monitoring tools - Flag delinquent or pending accounts to retention and collections workflows
Technical Specifications
Authentication
Institution credentials and security controls handled in a managed session
Connectivity
Authenticated flows plus jXchange (REST & SOAP) and SymXchange services surfaced as REST endpoints
Response format
Normalized JSON across Customer, Account, Transaction, and EFT Card objects
Rate limits
Adaptive throttling tuned to your institution's core environment to avoid Jack Henry-side limits
Session management
Automatic session refresh, credential rotation, and environment routing
Data freshness
Near real-time pulls for accounts, customers, and transactions with optional scheduled batch syncs
Security
Encrypted credential vault, scoped access tokens, SOC 2-aligned controls, and audit logging
Webhooks
Event-style callbacks for account openings, customer changes, transaction postings, and card status
Latency
Sub-second reads on cached entities; multi-second writes when posting transactions and account updates
Throughput
Horizontally scaled workers sized to community and regional bank transaction volume
Reliability
Retry, backoff, and idempotency keys for account, customer, and transaction operations
Adaptation
Continuous monitoring of jXchange, SymXchange, and SilverLake releases plus institution configuration drift
Frequently asked questions
Supergood works with your institution's existing SilverLake access and authenticated sessions. VIP enrollment is the standard path for direct jXchange credentials; where you already have access, Supergood layers a normalized API on top so you avoid raw SOAP integration.
Yes. Supergood models both the jXchange (REST and SOAP) services-based interface and SymXchange operations, exposing customer, account, transaction, and card functions as consistent REST endpoints rather than forcing you to consume each service directly.
Each institution is profiled against its configured product definitions, parameters, and entitlements. Supergood preserves institution-specific fields and lifecycle states rather than forcing a generic schema across banks.
Yes. The API supports reads across customers, accounts, transactions, and EFT cards, plus writes such as account additions, customer modifications, and transaction postings—each with appropriate reason codes and audit handling.
Direct integration means handling SOAP envelopes, per-institution configuration, and VIP onboarding yourself. Supergood delivers a maintained REST layer with normalized objects, session management, and continuous monitoring as jXchange and SilverLake evolve.