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List classes in a dictionary

bsdd_list_dictionary_classes
Read-onlyIdempotent

List classes of a specific bSDD dictionary, filterable by text, class type, or IFC entity to browse its structure.

Instructions

List the classes of one dictionary, optionally filtered by text, class type or related IFC entity. Use this to browse a dictionary; use bsdd_search_classes to search across dictionaries.

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.
classTypeNoOptional filter on class type.
searchTextNoOptional filter text. Ignored when useNestedClasses is true.
languageCodeNoLanguage code, case sensitive (e.g. "EN", "nl-NL"). Falls back to the dictionary default language.
dictionaryUriYesDictionary URI including version, e.g. "https://identifier.buildingsmart.org/uri/buildingsmart/ifc/4.3". The version may be replaced by "latest".
useNestedClassesNoReturn the classes as a tree instead of a flat list. Cannot be combined with pagination.
relatedIfcEntitiesNoOptional filter on related IFC entities, by code (e.g. "IfcWall", version-independent) or by class URI.
Install Server

TDQS

A4.2/5.0
Behavior3/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint false, so the safety profile is clear. The description adds minimal behavioral context beyond this, such as the filtering options already present in the schema. No contradictions, but also no additional behavioral insights like pagination or tree structure behavior.

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-load the core purpose and usage boundary. No wasted words; the description is compact and efficiently structured.

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?

For a list operation with a detailed schema and safety annotations, the description is complete enough. It covers the core function and usage, though it does not describe the return format or pagination behavior—but these are not essential given the schema's parameter descriptions and the tool's straightforward nature.

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?

Input schema has 100% description coverage, so parameters are already well-documented. The description only summarizes the filter types ('text, class type or related IFC entity') without adding new semantic meaning beyond what the schema provides.

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 clearly states the tool lists classes of a single dictionary with optional filters, using a specific verb ('List') and resource ('classes of one dictionary'). It distinguishes itself from siblings by explicitly naming bsdd_search_classes for cross-dictionary searches.

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 provides usage context: 'Use this to browse a dictionary; use bsdd_search_classes to search across dictionaries.' This clearly delineates when to use this tool versus the alternative.

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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