WP REST API - Pure Taxonomies
Now you have no need to make additional requests to get taxonomy info (term_id, name, slug, term_group, term_taxonomy_id, taxonomy, description, parent, count, filter) from their id that is available in the default json response. Now all available taxonomy data is available in 'pure_taxonomies' field from your json response.
https://wordpress.org/plugins/wp-rest-api-pure-taxonomies/