Shadow API discovery: finding the endpoints your inventory never saw

You cannot secure an endpoint you have never found. Shadow APIs — undocumented routes that front-end code, mobile apps, and integrations reach directly — are a gap in nearly every attack-surface map. And gaps are exactly where attackers look first.

Where shadow APIs come from

Front-end bundles containing hard-coded routes, mobile clients with their own API versions, admin endpoints that were never written into the documentation, and microservices that expose unadvertised contracts. Each is legitimate in its own moment and forgotten the next.

Three discovery techniques that work

HAR file ingestion reveals the real traffic an application generates. OpenAPI and Swagger probing detects schema endpoints that are often left enabled in production. And parsing JavaScript bundles with an AST recovers routes, parameters, and identifiers that are embedded in client code.

Discovery is the beginning, not the end

A discovered endpoint is only a lead until it is tested. The reason Nyxeara pairs discovery with verification is simple: finding an endpoint you did not know about is valuable, proving what it exposes is what changes your risk.