API discovery is the process of identifying known, unknown, documented, and undocumented APIs across an organization’s environment. It matters because security teams cannot protect interfaces they do not know exist.
What is API Discovery?
API discovery helps organizations build visibility into public, private, partner, shadow, and legacy APIs. This may involve code analysis, traffic inspection, gateway telemetry, cloud review, or inventory reconciliation across development and production environments.
What API Discovery Commonly Reveals
Common findings include forgotten endpoints, shadow APIs, deprecated versions still exposed, undocumented routes, sensitive data flows, and unmanaged third-party integrations.
API Discovery vs. API Documentation
Documentation describes intended APIs. Discovery focuses on finding what is actually present and reachable in the real environment.
Frequently Asked Questions
Why is API discovery important?
Because hidden or unmanaged APIs can create major blind spots in authentication, authorization, and exposure control.
Is API discovery a one-time task?
No. APIs change frequently, so discovery should be continuous or regularly repeated.
