Adding taxonomies to articles, blogs, or any other content type must be handled using Taxonomy API to get desired taxonomy and then sending Taxonomy API response as Taxonomy paramter value in Article or other API. Go to /api-doc and click on Taxonomy - Taxo link that is displayed. This will take you to Taxonomy – Taxon. Find /api/taxons. Click on POST to expand API method for retrieving taxonomy terms. This will expand the section where are explained formats, parameters and server responses. Here you can find end-point and parameters that can be passed to API. Data can be returned in json, xml or html format. Pre-requisites Logged in as active user with authentication key Parameters Parameter Required Type Description taxonomy Yes string It always should be `category` query No string Name of the taxonomy – or part of taxonomy name. limit No string Value how many terms that match query should be returned. fields No String Taxonomy term can be retrieved by making request to API end-point /api/taxons.{_format} Example request: http://example/api/taxons.json?taxonomy=category&query=water&limit=1 Example response: This example is for single term. Using response in other APIs Response from taxons API is taxonomy that should be passed as taxonomy parameter value. Response contains all details for taxonomy – including grandparent->parent->child relation, creation details and such.