Integration Gateway Lab

A synthetic-only .NET 8 integration proof for contract validation, idempotency, bounded retries, import validation, and operational evidence.

Status: native-validated public release (v1.0.0) Stack: .NET 8 / ASP.NET Core / C# Evidence: two screenshot groups, eight native browser captures

Core flow

1. validate endpoint, idempotency key, and reference;
2. stage an accepted result once;
3. replay the original result for duplicate keys;
4. plan bounded webhook retry;
5. move exhausted synthetic deliveries to dead-letter state;
6. validate import candidates before downstream work.

Public boundary

No external service is called. All providers, payloads, webhooks, import records, and identifiers are generated fixtures.