The Biolookup Service provides metadata and ontological information about biomedical entities based on their compact identifiers (CURIEs).
Resources
Names
Alt. IDs
Definitions
Synonyms
Xrefs
Relations
Species
                It has a single endpoint /api/lookup/<curie> that gives back JSON.
                Here are a few examples:
            
| CURIE | Description | 
|---|---|
| DOID:14330 | 🟢 exact | 
| doid:14330 | 🟢 capitalization variant | 
| DO:14330 | 🟢 synonym identified in metaregistry | 
| GO:0000501 | 🟢 secondary identifier mapped | 
| GO:GO:0000501 | 🟢 banana problem mapped | 
| apo:0000155 | 🟡 able to look up name, but prefix is not listed on Identifiers.org | 
| wikidata:Q11085 | 🟡 able to generate Identifiers.org link, but name unavailable | 
| DOID:00000 | 🔴 valid prefix, but invalid identifier | 
| NNN:00000 | 🔴 invalid prefix |