Basic Search
Search for concepts by text:Parameters
Filter by Vocabulary
Restrict search to specific vocabularies:Filter by Domain
Search within specific domains:Filter by Concept Class
Search for specific concept classes:Standard Concepts Only
Filter to standard concepts:Search with Synonyms
Include concept synonyms in search:Combined Filters
Autocomplete
Get suggestions as the user types:Pagination
Manual Pagination
Auto-Pagination Iterator
Iterate through all results automatically:Advanced Search
Use advanced search with additional filtering options and facets:Advanced Search Parameters
Relationship Filters
Apply relationship-based filtering:Semantic Search
Search for concepts using natural language with neural embeddings. Semantic search understands meaning, not just keywords.Semantic Search Parameters
Semantic Search Iterator
Iterate through all semantic search results with automatic pagination:Async Semantic Search
Bulk Lexical Search
Search for multiple queries in a single API call (up to 50 queries). Much more efficient than individual calls when you have many terms to look up.Bulk Search Parameters
With Shared Defaults
Bulk Semantic Search
Search for multiple natural-language queries using neural embeddings in a single call (up to 25 queries).Bulk Semantic Parameters
Async Bulk Search
Find Similar Concepts
Find concepts similar to a reference concept or query. Provide exactly one of:concept_id, concept_name, or query.