Banking APIs Built
for Modern Integration

Access real-time account data, originate payments across every major clearing network, and build reliable financial workflows — all through a single, secure developer platform.

All systems operational
Core Banking99.98%
Wires100%
ACH99.99%
Instant Payments99.97%
30-day uptime  |  View Status
4
API Products
<10s
Instant Settlement
24/7
RTP & FedNow
OAS3
OpenAPI 3.0 Specs

Every Clearing Network.
One Developer Platform.

Purpose-built REST APIs covering the full spectrum of commercial banking operations.

REST

Core Banking

Real-time account inquiry, balance reporting, and transaction history across all account types.

  • Account inquiry & balances
  • Transaction history
  • Multi-account support
  • Sandbox environment
View Definition
REST

Wires

Initiate domestic and international wire transfers with real-time status tracking and confirmation.

  • Domestic & international
  • Real-time status
  • SWIFT & Fedwire support
  • Beneficiary validation
View Definition
REST

ACH

Originate ACH credits and debits, manage batches, and receive return notifications in real time.

  • Credit & debit origination
  • Batch management
  • Return processing
  • Same-day ACH
View Definition
REST

Instant Payments

Send and receive payments via RTP and FedNow with sub-10-second settlement, 24/7/365.

  • RTP & FedNow rails
  • Sub-10s settlement
  • 24/7/365 availability
  • Request for Payment
View Definition

Built for the Way Developers Work

Secure by Design

OAuth 2.0 and API key authentication baked into every endpoint. mTLS available for production.

OpenAPI 3.0 Specs

Machine-readable OAS3 definitions for every API. Generate client SDKs in any language instantly.

Try It Interactively

Live API console in the developer portal. Send real requests against the sandbox without writing code.

Sandbox Included

Full-fidelity sandbox environment mirrors production behavior. No real funds moved during testing.

Self-Service Keys

Provision and rotate subscription keys and application secrets from the portal without contacting support.

Usage Analytics

Dashboards showing call volume, latency percentiles, error rates, and quota consumption per application.

From Interest to Integration in Four Steps

1

Submit Interest Form

Complete the short expression-of-interest form. Tell us about your company and intended use case.

2

Meet Your Rep

An SSB relationship manager will reach out to confirm eligibility and walk through the agreement.

3

Complete Onboarding

Sign the API License Agreement, complete identity verification, and receive your portal invitation.

4

Start Building

Access the portal, provision your first app, grab your subscription key, and make your first API call.

Ready to Start Building?

Join developers already building with SSB APIs. Get started in minutes with the Sandbox environment.