API inventory is the maintained record of an organization’s APIs, endpoints, versions, owners, and exposure details. It matters because security teams cannot govern, review, or retire interfaces they do not know exist.
What is API Inventory?
An API inventory helps teams understand what interfaces are exposed, who owns them, what versions are active, what data they handle, and what controls protect them. It is foundational to API governance, discovery, and deprecation discipline.
What API Inventory Commonly Supports
Common inventory details include endpoint locations, authentication methods, owners, versions, environments, data sensitivity, consumers, and deprecation status.
API Inventory vs. API Discovery
API discovery finds what exists in the environment. API inventory is the maintained system of record that tracks and governs those findings over time.
Frequently Asked Questions
Why is API inventory important?
Because unmanaged or forgotten APIs often become security blind spots.
Is inventory a one-time project?
No. It needs regular updates as APIs change, expand, and retire.
