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GUAC represents Graph for Understanding Artifact Composition.

Note: GUAC is under active development – if you are interested in contributing, please look at contributor guide and the “express interest” issue

Graph for Understanding Artifact Composition (GUAC) aggregates software security metadata into a high fidelity graph database—normalizing entity identities and mapping standard relationships between them. Querying this graph can drive higher-level organizational outcomes such as audit, policy, risk management, and even developer assistance.

Conceptually, GUAC occupies the “aggregation and synthesis” layer of the software supply chain transparency logical model:

A few examples of questions answered by GUAC include:

Quickstart

Refer to the Setup + Demo document to learn how to prepare your environment and try GUAC out!

Architecture

Here is an overview of the architecture of GUAC:

Supported input formats

• CycloneDX
• Dead Simple Signing Envelope
• In-toto ITE6
• OpenSSF Scorecard
• SLSA
• SPDX

Note that GUAC uses software identifiers standards to help link metadata together. However, these identifiers are not always available and heuristics need to be used to link them. Therefore, there may be unhandled edge cases and errors occuring when ingesting data. We appreciate if a comment can be made on the metadata quality issue.

Additional References

• GUAC Intro Slides
• GUAC Design Doc
• GUAC 2023 Q1 Maintainer Summit Notes