HDF SchemasHeimdall Data Format

A standardized JSON format for security assessment data across 30+ tools and platforms.

7 Document Types

Results, Baselines, Systems, Plans, Amendments, Evidence Packages, and Comparisons — covering the full assessment lifecycle.

Convert output from Nessus, Grype, OSCAL, XCCDF, SARIF, CycloneDX, and many more into a unified format.

TypeScript and Go type definitions generated from the schemas, so both stacks stay in lockstep with the spec.

Each bundled schema embeds all referenced types. No external fetches needed for validation.