3 posts tagged with "yaml-dsl"

The OPC UA YAML DSL specification isn't just a nicer syntax for writing information models. It's the foundation for a fundamental shift in how the OPC UA community builds, reviews, shares, and evolves models. When your information model is a human-readable text file with a formal specification behind it, every modern software engineering practice suddenly becomes available. Let's explore what that future looks like.

Last week we made the case that OPC UA desperately needs a standard, human-readable modeling language. Today, we're delivering on that promise. We are publicly releasing the OPC UA YAML DSL Specification — a formal, vendor-neutral document that defines a declarative YAML authoring format compiling to conformant NodeSet2 XML. The specification is available now at /specification/.

OPC UA information models are the backbone of modern industrial interoperability. They describe how machines, sensors, and production lines expose their data to the world. Yet in 2026, the way we author these models is stuck in the early 2000s — hand-editing verbose XML, locked inside proprietary GUI tools, with no path to version control, code review, or CI/CD. The OPC UA community deserves better.