Stable URIs

TaxonConcepts and TaxonNames can be identified over the internet with HTTP URIs which resolve according to semantic web best practices (see below). They are intended to be persistent links and can be stored and used in web pages. The URIs are based on the WFO IDs used elsewhere.

A WFO stable URI is created by prepending "" to a ten or sixteen digit WFO ID described in the identifiers section.

Once created the HTTP URI can be used a link in a webpage or social media post and will always redirect the user to an appropriate location.

The behaviour of the URIs differs depending on how they are resolved, by a human (with a web browser) or by a machine requesting data in a particular format. This is called content negotiation. Below is an example. It might seem complicated but it is transparent to a user of the data. Just refer to things by their URIs and the system routes calls to the right place!

Supported formats

Data can be returned in the 11 formats listed in the table below. These include graphical representations of the data.

Name Recommended Mime Type Recognized Mime Types Example
jsonapplication/jsonapplication/json, text/json, application/rdf+jsonjson
ntriplesapplication/n-triplesapplication/n-triples, text/plain, text/ntriples, application/ntriples, application/x-ntriplesntriples
turtletext/turtletext/turtle, application/turtle, application/x-turtleturtle
rdfxmlapplication/rdf+xmlapplication/rdf+xml, text/xml, application/xmlrdfxml
n3text/n3text/n3, text/rdf+n3n3

An example graph for a TaxonConcept

An example graph for a TaxonName


The diagram below shows the property relationships in the semantic web data model. Further documentation on these can be found either by dereferencing the URIs of the terms in the RDF responses. The GraphQL API uses a very similar data model and you can access its documentation using an IDE.