Haystack
Project Haystack is an open metadata model and tagging convention for semantically describing building and IoT data. It standardizes semantic tags and vocabularies to simplify integration, discovery and analytics across heterogeneous systems. The specification is supported by community libraries, converters and documentation, and is widely used in building automation, energy management and facility analytics.
This block bundles baseline information, context, and relations as a neutral reference in the model.
Reference building block
This building block serves as a structured reference in the knowledge model, with core data, context, and direct relationships.
What is this view?
This page provides a neutral starting point with core facts, structure context, and immediate relations—independent of learning or decision paths.
Baseline data
Context in the model
Structural placement
Where this block lives in the structure.
No structure path available.
Relations
Connected blocks
Directly linked content elements.