OpenDMI

OpenDMI reads DMI/SMBIOS data and gives it back as structured data instead of text to parse: a C library, command line tools, machine-readable output and bindings for Go, Python and Rust. Every field has a code, a type and a unit, so the same data reads the same way in the terminal, in JSON and through the API.

Reference manual

The reference manual covers OpenDMI as a whole, and is available as a PDF too:

Introduction: What OpenDMI is, what DMI/SMBIOS data is made of, and how to read the manual.
Getting started: Building OpenDMI from sources, and the first steps with the tool and the library.
Command line tool: The opendmi tool, its commands and the extension modules.
C library: Functions and types of the libopendmi library, grouped by the headers declaring them.
Behind the scenes: How the library works inside, and how it is extended with structure types of its own.
File formats: Layout of the YAML, JSON and XML documents the tool exports, and the schemas describing them.
Specifications: Layout of the structures OpenDMI decodes, field by field, including the ones the vendors define.