AI Coding Agents
Software Supply Chain
SBOM automation for coding agent changes
September 24, 2026 - 2 minute read
SBOM automation turns a resolved software build into a machine-readable component inventory. Coding agents can add generators, repair metadata, and investigate drift, but they should not claim complete coverage from a package manifest alone. A useful software bill of materials identifies what entered a release, how the inventory was produced, and which gaps remain.
The US National Telecommunications and Information Administration defines an SBOM as a nested software inventory. Its minimum-elements report groups requirements around data fields, automation support, and practices and processes. Those elements support vulnerability management, software inventory, and license analysis.
Define the SBOM automation boundary
Name the artifact being described. A repository can produce several containers, binaries, libraries, plugins, and deployment bundles with different dependency sets. Choose the build stage where dependencies are resolved and generated code, vendored packages, operating system layers, and bundled assets are visible.
Select the required format and version, such as SPDX or CycloneDX, based on the consumer. Record the generator version and configuration. Keep stable identifiers and supplier data where the build can establish them. Mark unknown fields as unknown rather than inferring ownership or license data from a package name.
A coding agent should receive the build command, artifact target, existing inventory policy, and validation command. Factory’s remote delegation guidance recommends supplying acceptance criteria and verification steps, which keeps an inventory task tied to a reproducible artifact.
Generate from resolved components
Generate the SBOM from lockfiles, build graphs, container layers, or the finished artifact when tooling supports it. Manifests often contain optional ranges and development dependencies that never ship. A resolved graph better represents the versions included in the output.
Compare a new inventory with the previous release. Investigate added, removed, or unexpectedly changed components. Check that direct and transitive dependencies appear, internal packages have stable identifiers, and files created during the build are represented according to policy. Validate the document against its format schema.
Keep vulnerability scanning separate from inventory generation. An SBOM records components and relationships. A scanner combines that inventory with advisory data and matching logic. A clean scan does not prove the inventory is complete, and an SBOM does not prove the release is free of known vulnerabilities.
Review and retain SBOM evidence
The pull request should include the generator configuration, validation result, a concise inventory diff, and the release artifact it describes. Avoid committing a generated file when the repository’s policy instead attaches signed build artifacts in CI. The durable requirement is reproducibility and traceability, not a specific storage location.
Factory Custom Automations can run recurring or GitHub-triggered checks with a defined service-account identity and run target. A repository can use that mechanism to detect inventory drift or open a review task. Keep the actual SBOM generator and schema validation deterministic.
Stop when the target artifact cannot be built, dependency resolution uses an unknown environment, or the generator omits a package ecosystem present in the release. Reporting those limits gives security and release teams a truthful inventory boundary.
