Update

myapp/ns_api/__init__.py

@@ -3,7 +3,8 @@ __copyright__ = '(c) RemiZOffAlex'
 __email__ = 'remizoffalex@mail.ru'
 
 from functools import wraps
-from flask_jsonrpc import JSONRPC
+from jsonrpc import JSONRPC
+from jsonrpc.backend.flask import APIView
 from flask import session
 
 from .. import app, models
@@ -29,7 +30,7 @@ def login_required(func):
     return decorated_function
 
 
-jsonrpc = JSONRPC(app, '/api')
+jsonrpc = JSONRPC()
 
 from . import ( # noqa F401
     login,
@@ -38,3 +39,16 @@ from . import ( # noqa F401
     tag,
     user
 )
+
+app.add_url_rule('/api', view_func=APIView.as_view('api', jsonrpc=jsonrpc))
+
+
+@jsonrpc.method('api.methods')
+def api_methods() -> dict:
+    """Список методов API
+    """
+
+    result = {}
+    for method in jsonrpc.methods:
+        result[method] = jsonrpc.description(method)
+    return result