An SBOM can cover most of your third-party SDK inventory, because SDKs are software components. It cannot cover the external APIs your code calls, the data sent to them, or who owns the relationship. Treat the SBOM as the component layer and add an integration layer on top.
What an SBOM does well
CISA describes SBOMs as detailed inventories of software components that help organizations identify vulnerabilities, assess risk and make informed decisions about the software they use. A vendor SDK pulled in through a package manager shows up as a component with a name, version and supplier, so you can match it against vulnerability data.
That is real value. Most teams cannot list their SDKs from memory, and a generated SBOM does it in minutes.
What an SBOM leaves out
| Question | In a typical SBOM? |
|---|---|
| Which SDK versions are in this build? | Yes |
| Which known vulnerabilities affect them? | Yes, when matched to advisories |
| Which remote API does the SDK call? | Usually not |
| What customer data is sent? | No |
| Who on the product team owns it? | No |
| What happens if the vendor is down? | No |
| Which calls are plain HTTP with no SDK? | No |
An SBOM describes what is inside the software. An integration inventory describes what the software talks to. They overlap where an SDK is a thin client for a remote service, and that overlap is useful for linking the two lists.
Where a service-level format fits
CycloneDX includes a SaaSBOM capability that it describes as an inventory of services, endpoints, data flows and classifications for cloud-native applications. If you want a standard format for the integration layer, that is one option to evaluate. Many teams simply keep a table or catalog entry per integration and link each SDK component to it.
A practical combination
- Generate an SBOM for each service on every build.
- Tag each SDK component with the integration row it belongs to, for example a vendor name.
- Add rows for integrations with no SDK, found through code search and outbound logs.
- Review mismatches: a vendor SDK in the SBOM with no row, or a row with no SDK and no traffic.
Try it yourself
The demo shows a dependency inventory with component details. Pick an SDK entry and ask what remote service it talks to. That answer is the field your SBOM does not hold.
Click through it at your own pace, or open it full screen.
Quick check
Does an SBOM list the APIs my app calls?
Not in general. It lists components. Calls to remote services need separate discovery.
Should I replace my inventory with SBOMs?
No. Use SBOMs as the source for the component layer and keep a smaller integration record beside them.
Safeguard offers SBOM and dependency scanning and asset discovery that can feed this kind of inventory. You can run a free scan at gold.safeguard.sh/scan.
Sources
Last reviewed: 19 October 2026.
