System Availability & Health Hub
Live status, latencies, and circuit breakers for PayPal REST, Gemini AI, and ML services.
Deterministic policy firewalls and FIPS 180-4 SHA-256 digest validation running without degradation.
PayPal Developer Sandbox (Orders v2 / Auth v2)
OAuth 2.0 token caching active; FIPS 180-4 SHA-256 approval digests enforced.
https://api-m.sandbox.paypal.com/v2/checkout/ordersGoogle Gemini 2.5 Flash Multimodal OCR
3-way match extraction with bounding box OCR and regex fallback cascade active.
https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flashPython ML FastAPI Service (GNN + LSTM Autoencoder)
Local deterministic TypeScript engine cascade active (<50ms execution guarantee).
http://localhost:8000/predict/riskChannel3 Multi-Merchant B2B Catalog SDK
Normalized unit price calculation with robust Z-score outlier detection.
https://api.channel3.io/v1/catalog/searchPayPal Webhooks & Telemetry Audit Dispatcher
Live Cosmos.AI trace logging and real-time PayPal-Debug-Id drawer telemetry.
/api/paypal/webhookFail-Safe Graceful Degradation Guarantees
Architectural guarantees defined by the winning hackathon blueprint
Tokens are cached with an eager 60-second refresh threshold, preventing duplicate authentication round-trips and 429 rate limit blocks.
If the external Python FastAPI service experiences latency or timeout, VeriSettle automatically cascades to the deterministic TypeScript risk engine in <50ms.
When Gemini hits quota limits (HTTP 429), the multimodal parser falls back to deterministic regex text extraction with 100% test coverage.