BOM for Cartographer Conventions

This reference topic describes the BOM structure you can use with Cartographer Conventions.


The BOM is a type/structure wrapping a Software Bill of Materials (SBOM) describing the software components and their dependencies.


The structure of the BOM is defined as follows:

  "name": "BOM-NAME",
  "raw": "BYTE-ARRAY"


  • BOM-NAME is the prefix cnb-sbom:, followed by the location of the BOM definition in the layer for a cloud native buildpack (CNB) SBOM. For example: cnb-sbom:/layers/sbom/launch/paketo-buildpacks_executable-jar/sbom.cdx.json. For a non-CNB SBOM, the value of name might change.

  • BYTE-ARRAY: The content of the BOM. The content may be in any format or encoding. Consult the name to infer how the content is structured.

The convention controller forwards BOMs to the convention servers that it can discover from known sources, including:

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