They often assume inventory visibility equals operational control. In practice, a catalog only helps if it is the place where teams actually work and update definitions. If developers still have to sync manually, the catalog adds another layer to maintain. Governance improves when visibility and execution live together.
Why This Matters for Security Teams
API catalogs and visibility layers are often treated as proof that an organisation understands its service surface, but inventory alone does not create control. Security teams still need to know who can call what, which secrets are live, where ownership sits, and whether definitions are updated when systems change. That gap is why NHI governance failures frequently show up in operational drift rather than in missing records. The Top 10 NHI Issues research frames this as a lifecycle problem, not a dashboard problem.
Current guidance aligns with the NIST Cybersecurity Framework 2.0 view that visibility must support ongoing identification, protection, and monitoring. In practice, a catalog that sits outside the execution path becomes another place to reconcile truth after the fact. One widely cited signal from The State of Non-Human Identity Security is that 85% of organisations lack full visibility into third-party vendors connected via OAuth apps, which is exactly the sort of hidden exposure a catalog can fail to surface if it is not tied to runtime governance. In practice, many security teams encounter access sprawl only after an integration outage, audit finding, or token misuse has already occurred.
How It Works in Practice
A useful API catalog is not a passive register. It should be the operational source of truth for service ownership, authentication method, secret lifecycle, and policy status. That means the catalog must connect to CI/CD, secret managers, IAM, and runtime telemetry so changes are reflected automatically rather than copied manually. The NHI Lifecycle Management Guide is the right lens here because APIs and service identities need birth, change, rotation, and retirement workflows, not just documentation.
In mature setups, teams use the catalog to answer operational questions:
- Which workload owns this API and who approves changes?
- Which non-human identities are authenticated to it?
- Are tokens, certificates, or api key rotated on schedule?
- Is the service still in use, and by whom?
- Do logs, traces, and policy decisions point back to the same asset record?
That approach also supports the control logic in the NIST Cybersecurity Framework 2.0, where asset visibility must feed risk treatment and monitoring. Best practice is evolving toward “visibility plus execution,” meaning developers update definitions where they already ship code, and security policy is evaluated from those same records. The operational benefit is smaller drift and faster revocation when an API or secret is retired. These controls tend to break down when teams maintain catalogs in a separate tool with no pipeline integration, because records become stale as soon as the next deployment lands.
Common Variations and Edge Cases
Tighter catalog governance often increases workflow overhead, so teams need to balance completeness against developer friction and false precision. A catalog that is too rigid can be ignored, while one that is too loose becomes a reporting artifact. The right model depends on whether the environment is mostly internal APIs, partner integrations, or externally exposed services with short-lived credentials.
There is no universal standard for this yet, but current guidance suggests prioritising systems where inventory gaps create the highest blast radius: OAuth-connected third parties, privileged automation, and APIs that issue or consume secrets. The Ultimate Guide to NHIs — Key Challenges and Risks is especially relevant when catalog data must track both service accounts and machine-to-machine trust. In parallel, the NIST Cybersecurity Framework 2.0 supports a practical posture: use the catalog to drive action, not just reporting.
The biggest edge case is distributed ownership, where platform teams, app teams, and security all believe someone else maintains the record. That breaks down fastest in environments with rapid API churn, because the catalog lags behind live entitlements and the visibility layer stops reflecting reality.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST CSF 2.0 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Catalog drift often hides unmanaged non-human identities and stale ownership. |
| NIST CSF 2.0 | ID.AM-1 | Asset inventory is central, but only if it stays operationally current. |
| NIST CSF 2.0 | PR.AC-4 | Visibility must include who can access APIs, not just what exists. |
Connect the catalog to deployment and monitoring so asset records update automatically.
