--- title: Introducing FlakeAudit, a CLI for evaluating CycloneDX... description: FlakeAudit is a new Rust-native CLI tool from Determinate Systems that evaluates CycloneDX 1.5 SBOMs against custom policies. It complements FlakeBOM (their... canonical: https://daily.dev/posts/introducing-flakeaudit-a-cli-for-evaluating-cyclonedx-sboms-against-custom-policies-jxzdvjjgx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Introducing FlakeAudit, a CLI for evaluating CycloneDX SBOMs against custom policies | daily.dev og:description: FlakeAudit is a new Rust-native CLI tool from Determinate Systems that evaluates CycloneDX 1.5 SBOMs against custom policies. It complements FlakeBOM (their... og:url: https://daily.dev/posts/introducing-flakeaudit-a-cli-for-evaluating-cyclonedx-sboms-against-custom-policies-jxzdvjjgx og:image: https://api.daily.dev/og/posts/jXZdVjjGX.png og:image:alt: Introducing FlakeAudit, a CLI for evaluating CycloneDX SBOMs against custom policies og:image:width: 1200 og:image:height: 630 og:locale: en --- [Determinate Systems](https://daily.dev/sources/determinate-systems) [Read post](https://api.daily.dev/r/jXZdVjjGX) # [Introducing FlakeAudit, a CLI for evaluating CycloneDX SBOMs against custom policies](https://api.daily.dev/r/jXZdVjjGX "Go to post") FlakeAudit is a new Rust-native CLI tool from Determinate Systems that evaluates CycloneDX 1.5 SBOMs against custom policies. It complements FlakeBOM (their SBOM generator for Nix flakes) by adding a policy enforcement layer that existing tools like Dependency-Track and Trivy don't handle well in Nix-first pipelines. FlakeAudit exposes three subcommands: \`check\` (evaluate an SBOM against a \`flakeaudit.toml\` policy file and fail CI on violations), \`compare\` (diff two SBOMs for added/removed components), and \`scan\` (query NVD and osv.dev for vulnerabilities and write them back into the SBOM as CycloneDX vulnerability entries). Policy files support license enforcement via SPDX expressions, component bans with per-component allowlist overrides, PURL-based source allowlists, and VEX-aware vulnerability state mapping (exploitable, in\_triage, untriaged, resolved, etc.). Nix-specific matchers like \`deriver\` and \`callstack\` enable comparing SBOMs using metadata only FlakeBOM emits. FlakeAudit is currently in early testing and available to Determinate Secure Packages customers. [#security](/tags/security "Check all #security posts")[#rust](/tags/rust "Check all #rust posts")[#sbom](/tags/sbom "Check all #sbom posts") Aug 03 • 12m read time • From [determinate.systems](https://api.daily.dev/r/jXZdVjjGX "determinate.systems") [](https://api.daily.dev/r/jXZdVjjGX "Go to post") Table of contents [The limits of SBOMs](https://api.daily.dev/r/jXZdVjjGX?a=the-limits-of-sboms "The limits of SBOMs")[ Enter FlakeAudit](https://api.daily.dev/r/jXZdVjjGX?a=enter-flakeaudit "Enter FlakeAudit")[ What a vulnerability actually looks like in a scanned SBOM](https://api.daily.dev/r/jXZdVjjGX?a=what-a-vulnerability-actually-looks-like-in-a-scanned-sbom "What a vulnerability actually looks like in a scanned SBOM")[ Policy-driven auditing](https://api.daily.dev/r/jXZdVjjGX?a=policy-driven-auditing "Policy-driven auditing")[ Nix-aware SBOM diffing](https://api.daily.dev/r/jXZdVjjGX?a=nix-aware-sbom-diffing "Nix-aware SBOM diffing")[ Adding your own vulnerability metadata](https://api.daily.dev/r/jXZdVjjGX?a=adding-your-own-vulnerability-metadata "Adding your own vulnerability metadata")[ Final thoughts](https://api.daily.dev/r/jXZdVjjGX?a=final-thoughts "Final thoughts") Comment Bookmark Copy Share your thoughts Post Share this post [](https://daily.dev/sources/determinate-systems) [Determinate Systems](https://daily.dev/sources/determinate-systems "https://daily.dev/sources/determinate-systems") 1 Followers • 0 Upvotes #### Would you recommend this post? 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