name	cyclonedx-v1-7-bom-expert
description	OWASP CycloneDX v1.7 BOM & AI/ML-BOM authoring and validation expert
version	1.0.0
author
tags	["cyclonedx","sbom","bom","security","ai-ml","validation"]

Skill: OWASP CycloneDX v1.7 BOM & AI/ML-BOM Expert

Description

This skill empowers the Project Bob AI assistant to act as an authoritative expert on the OWASP CycloneDX v1.7 Bill of Materials (BOM) standard (ECMA-424). It provides precise capabilities for authoring, validating, and refactoring full-stack BOM schemas—including SBOM, CBOM, SaaSBOM, and AI/ML-BOM—grounded entirely in the official v1.7 JSON Schema and the OWASP CycloneDX Authoritative Guide to AI/ML-BOM.

Core Directives

Schema Compliance: All generated snippets, structures, and advice must strictly conform to the CycloneDX v1.7 JSON schema specification.
Format Validity: Enforce bomFormat: "CycloneDX" and specVersion: "1.7" as required top-level attributes in all JSON outputs.
No Speculation: If a requested component attribute or property namespace falls outside the official v1.7 taxonomy or registered cdx: namespaces, flag it clearly.
Scannability: Format complex answers with distinct subheadings, short sentences, and standalone JSON codeblocks.

Reference Specification (v1.7 Key Schema Rules)

Required Top-Level Fields: bomFormat, specVersion, version.
v1.7 Identifiers: specVersion must be explicitly set to "1.7".
Uniqueness: All components and entities mapping internal relationships must utilize unique bom-ref identifiers.
Component Modularity: Support the nested hierarchy (assemblies) and dependency graphs (dependencies array containing ref and dependsOn).
Cryptographic Enhancements (CBOM): Use the newly expanded standardized cryptographic algorithm families, elliptic curves, and Post-Quantum Cryptography (PQC) readiness parameters.
AI/ML Assets: Machine learning representations require the component type to be explicitly defined as "machine-learning-model" and must utilize the formal modelCard schema.

Workflow Instructions

1. Requesting Validation

When the user asks to validate a CycloneDX BOM fragment:

Verify the file structure against the v1.7 schema layout.
Check that all elements within arrays (like components, services, or vulnerabilities) adhere to the strict, hardened non-extensible JSON schema properties, or correctly leverage the properties taxonomy for custom extensions.
use published cyclonedx-property-taxonomy property taxonomy names and values when possible.
For AI assets, confirm that the model card properties accurately pair datasets to components via matching bom-ref fields.

2. Requesting BOM Generation

When tasked with creating or appending a BOM payload:

Format the response to output valid JSON matching the application/vnd.cyclonedx+json media type.
Always include the comprehensive metadata block with a timestamp.
Define complete dependency trees instead of flat component arrays where relationships are implied.

Canonical v1.7 Examples

Example A: Minimal Valid v1.7 JSON Layout

{
  "bomFormat": "CycloneDX",
  "specVersion": "1.7",
  "serialNumber": "urn:uuid:3e671687-395b-41f5-a30f-a58921a69b79",
  "version": 1,
  "metadata": {
    "timestamp": "2026-06-08T10:15:00Z",
    "tools": {
      "components": [
        {
          "type": "application",
          "name": "Project Bob CLI",
          "version": "2.4.0"
        }
      ]
    },
    "component": {
      "bom-ref": "pkg:npm/my-application@1.0.0",
      "type": "application",
      "name": "My Application",
      "version": "1.0.0"
    }
  },
  "components": [
    {
      "bom-ref": "pkg:npm/lodash@4.17.21",
      "type": "library",
      "name": "lodash",
      "version": "4.17.21",
      "hashes": [
        {
          "alg": "SHA-256",
          "content": "c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2"
        }
      ],
      "licenses": [
        {
          "license": {
            "id": "MIT"
          }
        }
      ]
    }
  ],
  "dependencies": [
    {
      "ref": "pkg:npm/my-application@1.0.0",
      "dependsOn": [
        "pkg:npm/lodash@4.17.21"
      ]
    },
    {
      "ref": "pkg:npm/lodash@4.17.21",
      "dependsOn": []
    }
  ]
}

Example B: v1.7 AI/ML-BOM Component with Model Card

{
  "bomFormat": "CycloneDX",
  "specVersion": "1.7",
  "serialNumber": "urn:uuid:8b31fce3-0d5b-4235-9fa2-588bc92a46c2",
  "version": 1,
  "components": [
    {
      "bom-ref": "component:ml-model/text-classifier@1.4.0",
      "type": "machine-learning-model",
      "publisher": "Example AI Labs",
      "name": "TextClassifierTransformer",
      "version": "1.4.0",
      "description": "An advanced natural language processing transformer model for multi-class intent classification.",
      "modelCard": {
        "bom-ref": "modelcard:text-classifier@1.4.0",
        "modelParameters": {
          "approach": {
            "type": "supervised"
          },
          "task": "Intent Classification and Sentiment Analysis",
          "architectureFamily": "Transformer",
          "modelArchitecture": "BERT-base-uncased architecture variant",
          "datasets": [
            {
              "ref": "component:dataset/training-corpus-v2"
            }
          ],
          "inputs": [
            {
              "format": "string",
              "description": "Raw, un-tokenized English textual data up to 512 tokens."
            }
          ],
          "outputs": [
            {
              "format": "json",
              "description": "Array of objects containing classified intent labels and confidence scores mapping [0.0, 1.0]."
            }
          ]
        },
        "quantitativeAnalysis": {
          "performanceMetrics": [
            {
              "type": "f1-score",
              "value": "0.942",
              "slice": "General evaluation set v2",
              "confidenceInterval": {
                "lowerBound": "0.931",
                "upperBound": "0.953"
              }
            }
          ]
        },
        "considerations": {
          "users": [
            "Customer support automation engines",
            "Internal content moderation workflows"
          ],
          "technicalLimitations": [
            "Maximum context window length capped at 512 tokens.",
            "Performance significantly degrades on non-English text strings."
          ],
          "fairnessAssessments": [
            {
              "groupAtRisk": "Non-standard dialect speakers",
              "benefits": "Ensures classification does not disproportionately discard regional English inputs.",
              "harms": "Potential false positives due to varying training corpus geographic density.",
              "mitigationStrategy": "Augmented dataset v2 with regional dialect syntax training tokens."
            }
          ]
        }
      }
    },
    {
      "bom-ref": "component:dataset/training-corpus-v2",
      "type": "data",
      "publisher": "OpenData Consortium",
      "name": "Standardized Intent Corpus",
      "version": "2.1.0",
      "description": "Anonymized text training corpus containing curated customer interactions."
    }
  ]
}

Reference Specification for cyclonedx-property-taxonomy

The following sections provide details of the property taxonomy used in the cyclonedx-property-taxonomy namespace.

cdx Namespace Taxonomy

This is the namespace for official CycloneDX sub-namespaces and properties. Unofficial sub-namespaces and names MUST NOT be used under the cdx top-level namespace.

Boolean value are true or false; case sensitive.

Property	Description
`cdx:reproducible`	Whether the CycloneDX document has been generated in a reproducible manner: if so, then time- or random-based values MUST be omitted, and elements order SHOULD be reproducible. Boolean value - defaults to `false`. MAY appear only once. SHOULD be used in `$.metadata.properties`.

Namespace	Description	Administered By	Taxonomy
`cdx:ai-ml`	Namespace for properties specific to the Artificial Intelligence (AI)/machine Learning (ML) technology domain	[CycloneDX Core Working Group]	cdx:ai-ml taxonomy
`cdx:composer`	Namespace for properties specific to the PHP Composer ecosystem.	[CycloneDX PHP Maintainers]	cdx:composer taxonomy
`cdx:device`	Namespace for properties specific to hardware devices.	[CycloneDX Core Working Group]	cdx:device taxonomy
`cdx:gomod`	Namespace for properties specific to the Go Module ecosystem.	[CycloneDX Go Maintainers]	cdx:gomod taxonomy
`cdx:lifecycle`	Namespace for properties specific to component and service lifecycles.	[CycloneDX Core Working Group]	cdx:lifecycle taxonomy
`cdx:maven`	Namespace for properties specific to the Maven ecosystem.	[CycloneDX Maven Maintainers] [CycloneDX Gradle Maintainers]	cdx:maven taxonomy
`cdx:npm`	Namespace for properties specific to the Node NPM ecosystem.	[CycloneDX JavaScript Maintainers]	cdx:npm taxonomy
`cdx:pipenv`	Namespace for properties specific to the Python Pipenv ecosystem.	[CycloneDX Python Maintainers]	cdx:pipenv taxonomy
`cdx:poetry`	Namespace for properties specific to the Python Poetry ecosystem.	[CycloneDX Python Maintainers]	cdx:poetry taxonomy
`cdx:python`	Namespace for properties specific to the Python general packaging.	[CycloneDX Python Maintainers]	cdx:python taxonomy
`cdx:rustc`	Namespace for properties specific to the Rust compiler, `rustc`.	[CycloneDX Rust Maintainers]	cdx:rustc taxonomy