diff --git a/apertium_apy/apy.py b/apertium_apy/apy.py
index 3479aa87a..4e2d0f51c 100755
--- a/apertium_apy/apy.py
+++ b/apertium_apy/apy.py
@@ -44,6 +44,7 @@
     GenerateHandler,
     IdentifyLangHandler,
     ListHandler,
+    ListPairHandler,
     ListLanguageNamesHandler,
     PerWordHandler,
     PipeDebugHandler,
@@ -265,7 +266,7 @@ def setup_application(args):
     handlers = [
         (r'/', RootHandler),
         (r'/list', ListHandler),
-        (r'/listPairs', ListHandler),
+        (r'/listPairs', ListPairHandler),
         (r'/stats', StatsHandler),
         (r'/pairprefs', PairPrefsHandler),
         (r'/translate', TranslateHandler),
diff --git a/apertium_apy/handlers/__init__.py b/apertium_apy/handlers/__init__.py
index 40705fdb1..e9ce495ed 100644
--- a/apertium_apy/handlers/__init__.py
+++ b/apertium_apy/handlers/__init__.py
@@ -5,6 +5,7 @@
 from apertium_apy.handlers.identify_lang import IdentifyLangHandler  # noqa: F401
 from apertium_apy.handlers.list_language_names import ListLanguageNamesHandler  # noqa: F401
 from apertium_apy.handlers.list_modes import ListHandler  # noqa: F401
+from apertium_apy.handlers.list_modes import ListPairHandler # noqa: F401
 from apertium_apy.handlers.per_word import PerWordHandler  # noqa: F401
 from apertium_apy.handlers.pipe_debug import PipeDebugHandler  # noqa: F401
 from apertium_apy.handlers.speller import SpellerHandler  # noqa: F401
diff --git a/apertium_apy/handlers/list_modes.py b/apertium_apy/handlers/list_modes.py
index decd6932e..a8d496ddb 100644
--- a/apertium_apy/handlers/list_modes.py
+++ b/apertium_apy/handlers/list_modes.py
@@ -7,9 +7,31 @@
 class ListHandler(BaseHandler):
     @tornado.gen.coroutine
     def get(self):
-        query = self.get_argument('q', default='pairs')
+        query = self.get_argument('q', default='all')
 
-        if query == 'pairs':
+        if query == 'all':
+            src = self.get_argument('src', default=None)
+            pairs_data = []
+            if src:
+                pairs = [(src, trg) for trg in self.paths[src]]
+            else:
+                pairs = [(p[0], p[1]) for par in self.pairs for p in [par.split('-')]]
+            for (l1, l2) in pairs:
+                pairs_data.append({'sourceLanguage': l1, 'targetLanguage': l2})
+                if self.get_arguments('include_deprecated_codes'):
+                    pairs_data.append({'sourceLanguage': to_alpha2_code(l1), 'targetLanguage': to_alpha2_code(l2)})
+            response = {
+                'responseData': {
+                    'pairsData': pairs_data,
+                    'generatorsData': {pair: modename for (pair, (path, modename)) in self.generators.items()},
+                    'taggersData': {pair: modename for (pair, (path, modename)) in self.taggers.items()},
+                    'spellersData': {lang_src: modename for (lang_src, (path, modename)) in self.spellers.items()}
+                },
+                'responseDetails': None,
+                'responseStatus': 200
+            }
+            self.send_response(response)
+        elif query == 'pairs':
             src = self.get_argument('src', default=None)
             response_data = []
             if src:
@@ -30,4 +52,19 @@ def get(self):
         elif query == 'spellers':
             self.send_response({lang_src: modename for (lang_src, (path, modename)) in self.spellers.items()})
         else:
-            self.send_error(400, explanation='Expecting q argument to be one of analysers, generators, spellers, disambiguators, or pairs')
+            self.send_error(400, explanation='Expecting q argument to be one of analysers, generators, spellers, disambiguators, pairs or all')
+
+class ListPairHandler(BaseHandler):
+    @tornado.gen.coroutine
+    def get(self):
+        src = self.get_argument('src', default=None)
+        response_data = []
+        if src:
+            pairs = [(src, trg) for trg in self.paths[src]]
+        else:
+            pairs = [(p[0], p[1]) for par in self.pairs for p in [par.split('-')]]
+        for (l1, l2) in pairs:
+            response_data.append({'sourceLanguage': l1, 'targetLanguage': l2})
+            if self.get_arguments('include_deprecated_codes'):
+                response_data.append({'sourceLanguage': to_alpha2_code(l1), 'targetLanguage': to_alpha2_code(l2)})
+        self.send_response({'responseData': response_data, 'responseDetails': None, 'responseStatus': 200})
diff --git a/tests/test.py b/tests/test.py
index 575e6dd1d..869fecb41 100755
--- a/tests/test.py
+++ b/tests/test.py
@@ -143,6 +143,33 @@ def test_home_page(self):
 
 
 class TestListHandler(BaseTestCase):
+    def test_list_all(self):
+        response = self.fetch_json('/list', {'q': 'all'})
+        self.assertIsNone(response['responseDetails'])
+        self.assertEqual(response['responseStatus'], 200)
+
+        expected_pairs = set(map(lambda x: frozenset(x.items()), [
+            {'sourceLanguage': 'sme', 'targetLanguage': 'nob'},
+            {'sourceLanguage': 'eng', 'targetLanguage': 'spa'},
+            {'sourceLanguage': 'spa', 'targetLanguage': 'eng_US'},
+            {'sourceLanguage': 'spa', 'targetLanguage': 'eng'},
+        ]))
+        expected_generators = {'nno': 'nno-gener'}
+        expected_taggers = {'nno': 'nno-tagger'}
+        expected_spellers = {'nno': 'nno-speller'}
+
+        response_pairs = set(map(lambda x: frozenset(x.items()), response['responseData']['pairsData']))
+        self.assertTrue(response_pairs >= expected_pairs, '{} is missing one of {}'.format(response_pairs, expected_pairs))
+
+        self.assertTrue(response['responseData']['generatorsData'].items() >= expected_generators.items(),
+                        '{} is missing {}'.format(response['responseData']['generatorsData'], expected_generators))
+
+        self.assertTrue(response['responseData']['taggersData'].items() >= expected_taggers.items(),
+                        '{} is missing {}'.format(response['responseData']['taggersData'], expected_taggers))
+
+        self.assertTrue(response['responseData']['spellersData'].items() >= expected_spellers.items(),
+                        '{} is missing {}'.format(response['responseData']['spellersData'], expected_spellers))
+
     def test_list_pairs(self):
         response = self.fetch_json('/list', {'q': 'pairs'})
         self.assertIsNone(response['responseDetails'])