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Get the properties of a class

bsdd_get_class_properties
Read-onlyIdempotent

Retrieve the properties of a buildingSMART class, including data types, units, allowed values, and property sets.

Instructions

List the properties assigned to a class, with their data type, units, allowed values and property set. Use this instead of the deprecated IncludeClassProperties option of bsdd_get_class.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMaximum number of items to return (1-1000). Defaults to 50.
offsetNoZero-based offset of the first item returned. Default 0.
classUriYesClass URI, e.g. "https://identifier.buildingsmart.org/uri/buildingsmart/ifc/4.3/class/IfcWall". Use bsdd_search_classes to find one.
searchTextNoOptional filter on property name, description or code. Cannot be combined with propertySet/propertyCode.
propertySetNoOptional filter on property set name.
languageCodeNoLanguage code, case sensitive (e.g. "EN", "nl-NL"). Falls back to the dictionary default language.
propertyCodeNoOptional filter on property code.
Install Server

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds that the response includes data type, units, allowed values, and property set, and clarifies the deprecation context. No contradictions with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, front-loaded with the core purpose and a direct alternative reference. Every word earns its place; no fluff or redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema exists, but the description explains what is returned (properties, data type, units, allowed values, property set). It also notes the deprecation of an alternative. For a list tool with a well-documented schema, this is sufficient context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% coverage with detailed descriptions for all 7 parameters, so the schema carries the heavy lifting. The description mentions output content (data type, units, allowed values) but adds no specific input parameter semantics beyond what the schema already provides. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb 'List' and clearly identifies the resource: 'the properties assigned to a class'. It enumerates the included details (data type, units, allowed values, property set), and differentiates itself from the deprecated IncludeClassProperties option of bsdd_get_class.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly states 'Use this instead of the deprecated IncludeClassProperties option of bsdd_get_class', providing a direct alternative and when-to-use guidance. This clearly tells the agent when to select this tool over a sibling.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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