feat: add Taxonomy CDA support (list/fetch taxonomies, terms, hierarchy)

Adds direct Content Delivery API access to published taxonomies and terms,
without breaking the existing entry-filter API:

- stack.taxonomy() with a filter chained (in_/above/below/...) still filters
  entries by taxonomy, unchanged. With nothing chained, find() now lists all
  published taxonomies instead.
- stack.taxonomy(uid) is new: fetch() a single taxonomy, locale()/
  include_fallback()/include_branch() for locale-aware delivery.
- stack.taxonomy(uid).term(uid) / .term() (new contentstack/term.py): fetch a
  single term or list all terms, plus locales()/ancestors()/descendants() for
  hierarchy traversal with depth()/include_branch().

Implemented via TaxonomyQuery(TaxonomyFilter) inheritance so the legacy filter
behavior stays byte-for-byte identical — no version bump required for a
breaking change, no deprecation cycle needed.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: OMpawar-21

CHANGELOG.md

@@ -1,5 +1,11 @@
 # CHANGELOG
 
+## _v2.8.0_
+
+### **Date: 28-July-2026**
+
+- Added Taxonomy CDA support: `stack.taxonomy(uid)` now fetches a single published taxonomy (`.fetch()`), lists its terms (`.term().find()`), and fetches/traverses a single term (`.term(uid).fetch()/.locales()/.ancestors()/.descendants()`), with `.locale()`, `.include_fallback()`, `.include_branch()`, `.depth()`, `.skip()`, `.limit()`, `.include_count()`, and `.param()` chainable across the new classes. `stack.taxonomy()` (no uid) now also lists all published taxonomies via `.find()` when no filter is chained — existing entry-filter usage (`.in_()`, `.above()`, `.below()`, `.exists()`, etc. followed by `.find()`) is fully backward compatible and unchanged.
+
 ## _v2.7.1_
 
 ### **Date: 22-July-2026**

README.md

@@ -126,6 +126,36 @@ image = stack.image_transform(url, {'width': 100, 'height': 100}).get_url()
 image = stack.image_transform(url, {'auto': 'webp'}).get_url()
 ```
 
+### Working with Taxonomies
+
+Taxonomies published to an environment/locale can be fetched directly via the Content Delivery API.
+
+```python
+# List all published taxonomies
+result = stack.taxonomy().limit(10).include_count().find()
+taxonomies = result['taxonomies']
+
+# Fetch a single taxonomy, with locale fallback
+taxonomy = stack.taxonomy('regions').locale('fr-fr').include_fallback().fetch()
+
+# List all terms in a taxonomy
+terms_result = stack.taxonomy('regions').term().locale('en-us').depth(3).find()
+
+# Fetch a single term
+term = stack.taxonomy('regions').term('california').fetch()
+
+# Term hierarchy traversal
+ancestors = stack.taxonomy('regions').term('san-francisco').depth(5).ancestors()
+descendants = stack.taxonomy('electronics').term('laptops').depth(2).descendants()
+locales = stack.taxonomy('regions').term('california').locales()
+```
+
+`stack.taxonomy()` (no uid) with a filter chained still filters entries by taxonomy, unchanged:
+
+```python
+result = stack.taxonomy().in_('taxonomies.category', ['category1', 'category2']).find()
+```
+
 ### Using the Sync API with Python SDK
 
 The Sync API takes care of syncing your Contentstack data with your application and ensures that the data is always

contentstack/__init__.py

@@ -42,7 +42,7 @@ def get_contentstack_endpoint(region='us', service='', omit_https=False):
 __title__ = 'contentstack-delivery-python'
 __author__ = 'contentstack'
 __status__ = 'debug'
-__version__ = 'v2.7.1'
+__version__ = 'v2.8.0'
 __endpoint__ = 'cdn.contentstack.io'
 __email__ = 'support@contentstack.com'
 __developer_email__ = 'mobile@contentstack.com'

contentstack/stack.py

@@ -8,7 +8,7 @@
 from contentstack.assetquery import AssetQuery
 from contentstack.contenttype import ContentType
 from contentstack.endpoint import Endpoint
-from contentstack.taxonomy import Taxonomy
+from contentstack.taxonomy import Taxonomy, TaxonomyQuery
 from contentstack.globalfields import GlobalField
 from contentstack.https_connection import HTTPSConnection
 from contentstack.image_transform import ImageTransform
@@ -202,13 +202,35 @@ def content_type(self, content_type_uid=None):
         """
         return ContentType(self.http_instance, content_type_uid)
 
-    def taxonomy(self):
+    def taxonomy(self, taxonomy_uid: str = None):
         """
-        taxonomy defines the structure or schema of a page or a section
-        of your web or mobile property.
-        :return: taxonomy
+        Without taxonomy_uid: returns a TaxonomyQuery. Chain a filter
+        (in_, or_, and_, exists, above, below, equal_and_above, equal_and_below)
+        then find() to fetch entries filtered by taxonomy (legacy behavior,
+        unchanged). Or call find() directly with nothing chained to list all
+        published taxonomies from the Content Delivery API.
+
+        With taxonomy_uid: returns a Taxonomy for CDA access to that specific
+        published taxonomy (fetch(), term()).
+
+        :param taxonomy_uid: {str} -- (optional) unique identifier of the taxonomy.
+        :return: TaxonomyQuery or Taxonomy
+        -----------------------------
+        Example::
+
+            >>> import contentstack
+            >>> stack = contentstack.Stack('api_key', 'delivery_token', 'environment')
+            >>> # Legacy: filter entries by taxonomy
+            >>> result = stack.taxonomy().in_('taxonomies.color', ['red']).find()
+            >>> # New: list all published taxonomies
+            >>> result = stack.taxonomy().limit(10).find()
+            >>> # New: fetch a single published taxonomy
+            >>> result = stack.taxonomy('regions').fetch()
+        -----------------------------
         """
-        return Taxonomy(self.http_instance)
+        if taxonomy_uid:
+            return Taxonomy(self.http_instance, taxonomy_uid)
+        return TaxonomyQuery(self.http_instance)
 
     def global_field(self, global_field_uid=None):
         """

contentstack/taxonomy.py

@@ -1,43 +1,51 @@
 import json
-from urllib import parse
 from urllib.parse import quote
 
+from contentstack.error_messages import ErrorMessages
+from contentstack.utility import Utils
 
 
-class Taxonomy:
+class TaxonomyFilter:
+    """
+    Taxonomy entry-filter queries ($above, $below, $in, $exists, ...).
+    Use stack.taxonomy() to instantiate.
+
+    API Reference: https://www.contentstack.com/docs/developers/apis/content-delivery-api/#taxonomies
+    """
+
     def __init__(self, http_instance):
         self.http_instance = http_instance
         self._filters: dict = {}
 
-    def _add(self, field: str, condition: dict) -> "TaxonomyQuery":
+    def _add(self, field: str, condition: dict) -> "TaxonomyFilter":
         self._filters[field] = condition
         return self
 
-    def in_(self, field: str, terms: list) -> "TaxonomyQuery":
+    def in_(self, field: str, terms: list) -> "TaxonomyFilter":
         return self._add(field, {"$in": terms})
 
-    def or_(self, *conds: dict) -> "TaxonomyQuery":
+    def or_(self, *conds: dict) -> "TaxonomyFilter":
         return self._add("$or", list(conds))
 
-    def and_(self, *conds: dict) -> "TaxonomyQuery":
+    def and_(self, *conds: dict) -> "TaxonomyFilter":
         return self._add("$and", list(conds))
 
-    def exists(self, field: str) -> "TaxonomyQuery":
+    def exists(self, field: str) -> "TaxonomyFilter":
         return self._add(field, {"$exists": True})
 
-    def equal_and_below(self, field: str, term_uid: str, levels: int = 10) -> "TaxonomyQuery":
+    def equal_and_below(self, field: str, term_uid: str, levels: int = 10) -> "TaxonomyFilter":
         cond = {"$eq_below": term_uid, "levels": levels}
         return self._add(field, cond)
 
-    def below(self, field: str, term_uid: str, levels: int = 10) -> "TaxonomyQuery":
+    def below(self, field: str, term_uid: str, levels: int = 10) -> "TaxonomyFilter":
         cond = {"$below": term_uid, "levels": levels}
         return self._add(field, cond)
 
-    def equal_and_above(self, field: str, term_uid: str, levels: int = 10) -> "TaxonomyQuery":
+    def equal_and_above(self, field: str, term_uid: str, levels: int = 10) -> "TaxonomyFilter":
         cond = {"$eq_above": term_uid, "levels": levels}
         return self._add(field, cond)
 
-    def above(self, field: str, term_uid: str, levels: int = 10) -> "TaxonomyQuery":
+    def above(self, field: str, term_uid: str, levels: int = 10) -> "TaxonomyFilter":
         cond = {"$above": term_uid, "levels": levels}
         return self._add(field, cond)
 
@@ -62,3 +70,164 @@ def find(self, params=None):
             url += f'&{other_params}'
         return self.http_instance.get(url)
 
+
+class TaxonomyQuery(TaxonomyFilter):
+    """
+    stack.taxonomy() — no uid.
+
+    Chain a filter (in_, or_, and_, exists, above, below, equal_and_above,
+    equal_and_below) then call find() to fetch entries filtered by taxonomy
+    (unchanged legacy behavior, inherited from TaxonomyFilter).
+
+    Call find() directly with nothing chained to list all published
+    taxonomies from the Content Delivery API instead.
+
+    Example::
+
+        >>> import contentstack
+        >>> stack = contentstack.Stack('api_key', 'delivery_token', 'environment')
+        >>> # Legacy: filter entries by taxonomy
+        >>> result = stack.taxonomy().in_('taxonomies.color', ['red']).find()
+        >>> # New: list all published taxonomies
+        >>> result = stack.taxonomy().limit(10).include_count().find()
+    """
+
+    def __init__(self, http_instance):
+        super().__init__(http_instance)
+        self._query_params = {}
+
+    def skip(self, skip: int) -> "TaxonomyQuery":
+        """Sets pagination offset for listing taxonomies.
+        :param skip: {int} -- number of taxonomies to skip
+        :return: TaxonomyQuery, so you can chain this call.
+        """
+        self._query_params['skip'] = skip
+        return self
+
+    def limit(self, limit: int) -> "TaxonomyQuery":
+        """Sets the maximum number of taxonomies to return.
+        :param limit: {int} -- max number of taxonomies to return
+        :return: TaxonomyQuery, so you can chain this call.
+        """
+        self._query_params['limit'] = limit
+        return self
+
+    def include_count(self) -> "TaxonomyQuery":
+        """Includes the total count of taxonomies in the response.
+        :return: TaxonomyQuery, so you can chain this call.
+        """
+        self._query_params['include_count'] = 'true'
+        return self
+
+    def param(self, key: str, value) -> "TaxonomyQuery":
+        """Adds an arbitrary query parameter to the list-taxonomies request
+        (e.g. 'locale').
+        :param key: {str} -- query parameter key
+        :param value: value for the query parameter
+        :return: TaxonomyQuery, so you can chain this call.
+        """
+        if None in (key, value):
+            raise KeyError(ErrorMessages.INVALID_KEY_VALUE_ARGS)
+        self._query_params[key] = value
+        return self
+
+    def find(self, params=None):
+        """
+        If a filter was chained (in_/or_/and_/exists/above/below/...), fetches
+        entries filtered by taxonomy — unchanged legacy behavior.
+        GET /taxonomies/entries?environment=...&query=...
+
+        Otherwise, fetches all published taxonomies from the CDA.
+        GET /taxonomies
+
+        :return: dict -- filtered entries, or {'taxonomies': [...], 'count'?: n}
+        """
+        if self._filters:
+            return super().find(params)
+        if params:
+            self._query_params.update(params)
+        url = f'{self.http_instance.endpoint}/taxonomies'
+        query_str = Utils.do_url_encode(self._query_params)
+        return self.http_instance.get(f'{url}?{query_str}' if query_str else url)
+
+
+class Taxonomy:
+    """
+    Represents a single published taxonomy from the Content Delivery API.
+    Use stack.taxonomy(uid) to instantiate.
+
+    Example::
+
+        >>> import contentstack
+        >>> stack = contentstack.Stack('api_key', 'delivery_token', 'environment')
+        >>> taxonomy = stack.taxonomy('regions').locale('fr-fr').include_fallback()
+        >>> result = taxonomy.fetch()
+    """
+
+    def __init__(self, http_instance, taxonomy_uid: str):
+        if not taxonomy_uid:
+            raise KeyError(ErrorMessages.INVALID_KEY_OR_VALUE)
+        self.http_instance = http_instance
+        self._taxonomy_uid = taxonomy_uid
+        self._url = f'{http_instance.endpoint}/taxonomies/{taxonomy_uid}'
+        self._query_params = {}
+
+    def term(self, term_uid: str = None):
+        """
+        Without term_uid: returns TermQuery for listing all terms in this taxonomy.
+        With term_uid: returns Term for a specific term.
+
+        :param term_uid: {str} -- (optional) unique identifier of the term.
+        :return: Term or TermQuery
+        """
+        from contentstack.term import Term, TermQuery
+        if term_uid:
+            return Term(self.http_instance, self._taxonomy_uid, term_uid)
+        return TermQuery(self.http_instance, self._taxonomy_uid)
+
+    def locale(self, locale: str) -> "Taxonomy":
+        """Sets the locale for this taxonomy fetch (e.g. 'en-us', 'fr-fr').
+        :param locale: {str} -- locale code
+        :return: Taxonomy, so you can chain this call.
+        """
+        self._query_params['locale'] = locale
+        return self
+
+    def include_fallback(self) -> "Taxonomy":
+        """Enables locale fallback through the branch hierarchy.
+        If the taxonomy is not published in the requested locale, falls back
+        to the parent locale in the branch hierarchy.
+        :return: Taxonomy, so you can chain this call.
+        """
+        self._query_params['include_fallback'] = 'true'
+        return self
+
+    def include_branch(self) -> "Taxonomy":
+        """Includes the _branch field in the response.
+        :return: Taxonomy, so you can chain this call.
+        """
+        self._query_params['include_branch'] = 'true'
+        return self
+
+    def param(self, key: str, value) -> "Taxonomy":
+        """Adds an arbitrary query parameter.
+        :param key: {str} -- query parameter key
+        :param value: value for the query parameter
+        :return: Taxonomy, so you can chain this call.
+        """
+        if None in (key, value):
+            raise KeyError(ErrorMessages.INVALID_KEY_VALUE_ARGS)
+        self._query_params[key] = value
+        return self
+
+    def fetch(self) -> dict:
+        """
+        Fetches this taxonomy from the CDA.
+        GET /taxonomies/{taxonomy_uid}
+
+        :return: dict -- the taxonomy object.
+        """
+        query_str = Utils.do_url_encode(self._query_params)
+        url = f'{self._url}?{query_str}' if query_str else self._url
+        response = self.http_instance.get(url)
+        return response.get('taxonomy', response)