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OLS4

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Provides a central repository for biomedical ontologies, offering a single point of access to their latest versions.

About

The Ontology Lookup Service (OLS) is a comprehensive platform developed by EMBL-EBI, designed to serve as a unified repository for biomedical ontologies. It provides users with a single, accessible point to discover and interact with the most current versions of various ontologies. OLS facilitates this through a user-friendly website, a robust REST API for programmatic access, and an MCP server endpoint for machine-readable information. Internally, it leverages specialized database servers like Solr for full-text search and Neo4j for efficient recursive graph queries, enabling powerful exploration and analysis of interconnected knowledge within the biomedical domain.

Key Features

  • Centralized repository for biomedical ontologies
  • REST API for programmatic access
  • Machine-readable MCP server endpoint
  • Full-text search capabilities for ontology entities
  • Graph-based querying for complex relationships
  • 70 GitHub stars

Use Cases

  • Discovering and exploring biomedical ontologies and their entities
  • Integrating ontology data into third-party applications and services
  • Analyzing complex relationships within knowledge graphs for research or development