TCVS Extension — TTCU Technologies

The TCVS Extension enables secure communication between credit union applications and the U.S. Treasury's Check Verification Service API by automatically handling Cross-Origin Resource Sharing (CORS) restrictions.

Built for financial institutions using Corelation Keystone systems to integrate with Treasury check verification services, specifically optimized for TTCU Technologies custom UI scripts.

KEY FEATURES:

✓ Automatic CORS bypass for Treasury API calls
✓ Domain-restricted operation (tcvs.fiscal.treasury.gov only)
✓ Zero configuration required - works immediately upon installation
✓ Advanced debug logging system with centralized controls (v2.0.0)
✓ Complete Firefox browser support with Manifest V2 (v2.0.0)
✓ Cross-browser API bridge with seamless communication (v2.0.0)
✓ Enterprise-grade domain restriction and whitelist functionality (v2.0.0)
✓ Storage persistence for debug states and extension settings (v2.0.0)
✓ Real-time request monitoring and statistics
✓ No data collection or external communication
✓ Minimal permissions and performance impact
✓ Enterprise deployment support via Group Policy

WHAT'S NEW IN v2.0.0:

• Complete Firefox Browser Support: Full Manifest V2 implementation with webRequest API for comprehensive CORS handling
• Advanced Debug Logging System: Centralized debug controls with real-time toggle and context-aware logging across all components
• Enhanced Domain Management: Comprehensive whitelist system with import/export, current site detection, and cross-browser compatibility
• Cross-Browser API Bridge: Seamless communication between extension contexts with postMessage and runtime messaging
• ExtJS Strict Mode Compatibility: Specialized Firefox integration for legacy ExtJS applications with enhanced postMessage support
• Enterprise-Grade Domain Restrictions: Complete site restriction system with real-time updates and cross-tab synchronization
• Storage Persistence: Debug states, domain settings, and extension preferences persist across browser sessions
• Production-Ready Architecture: Dual-distribution build system supporting both public store and private hosting deployments

HOW IT WORKS:

Once installed, the extension automatically handles CORS restrictions when your credit union application makes API calls to the Treasury Check Verification Service. It works seamlessly in the background with no additional setup required.

The extension ONLY activates for requests to tcvs.fiscal.treasury.gov, ensuring your other web browsing remains unaffected.

SECURITY & PRIVACY:

• Minimal permissions model
• No user data collection
• No external communications
• Domain-restricted operation

TECHNICAL REQUIREMENTS:

• Chrome 88 or higher
• Works with Corelation Keystone systems
• Compatible with TTCU Technologies UI scripts

This extension is specifically designed for financial institutions and requires appropriate Treasury API credentials to function. Not intended for general consumer use.