diff --git a/src/comet_llm/chains/api.py b/src/comet_llm/chains/api.py
index 4c116dc7cc..e7ab376ed9 100644
--- a/src/comet_llm/chains/api.py
+++ b/src/comet_llm/chains/api.py
@@ -16,11 +16,20 @@
 import json
 from typing import Dict, List, Optional
 
-from .. import app, convert, experiment_api, experiment_info, llm_result
+from .. import (
+    app,
+    config,
+    convert,
+    exceptions,
+    experiment_api,
+    experiment_info,
+    llm_result,
+)
 from ..types import JSONEncodable
 from . import chain, state
 
 
+@exceptions.filter(allow_raising=config.raising_enabled(), summary=app.SUMMARY)
 def start_chain(
     inputs: Dict[str, JSONEncodable],
     api_key: Optional[str] = None,
diff --git a/src/comet_llm/config.py b/src/comet_llm/config.py
index e74b3b8dce..3f6dfabd57 100644
--- a/src/comet_llm/config.py
+++ b/src/comet_llm/config.py
@@ -37,6 +37,7 @@ def _extend_comet_ml_config() -> None:
     CONFIG_MAP_EXTENSION = {
         "comet.disable": {"type": int, "default": 0},
         "comet.logging.console": {"type": str, "default": "INFO"},
+        "comet.raise_exceptions_on_error": {"type": int, "default": 1},
     }
 
     comet_ml_config.CONFIG_MAP.update(CONFIG_MAP_EXTENSION)
@@ -74,6 +75,10 @@ def comet_disabled() -> bool:
     return bool(_COMET_ML_CONFIG["comet.disable"])
 
 
+def raising_enabled() -> bool:
+    return bool(_COMET_ML_CONFIG["comet.raise_exceptions_on_error"])
+
+
 def logging_available() -> bool:
     if api_key() is None:
         return False
diff --git a/src/comet_llm/logs_registry.py b/src/comet_llm/exceptions/__init__.py
similarity index 57%
rename from src/comet_llm/logs_registry.py
rename to src/comet_llm/exceptions/__init__.py
index ada5ee0200..e7a20e5478 100644
--- a/src/comet_llm/logs_registry.py
+++ b/src/comet_llm/exceptions/__init__.py
@@ -12,19 +12,5 @@
 #  LICENSE file in the root directory of this package.
 # *******************************************************
 
-import collections
-from typing import DefaultDict, Dict
-
-
-class LogsRegistry:
-    def __init__(self) -> None:
-        self._registry: DefaultDict[str, int] = collections.defaultdict(lambda: 0)
-
-    def register_log(self, project_url: str) -> None:
-        self._registry[project_url] += 1
-
-    def as_dict(self) -> Dict[str, int]:
-        return self._registry.copy()
-
-    def empty(self) -> bool:
-        return len(self._registry) == 0
+from .exceptions import CometLLMException
+from .filter_decorator import filter
diff --git a/src/comet_llm/exceptions.py b/src/comet_llm/exceptions/exceptions.py
similarity index 78%
rename from src/comet_llm/exceptions.py
rename to src/comet_llm/exceptions/exceptions.py
index ad88436072..0623ab6b1b 100644
--- a/src/comet_llm/exceptions.py
+++ b/src/comet_llm/exceptions/exceptions.py
@@ -14,4 +14,6 @@
 
 
 class CometLLMException(Exception):
-    pass
+    def __init__(self, *args, log_message_once: bool = False) -> None:  # type: ignore
+        super().__init__(*args)
+        self.log_message_once = log_message_once
diff --git a/src/comet_llm/exceptions/filter_decorator.py b/src/comet_llm/exceptions/filter_decorator.py
new file mode 100644
index 0000000000..8a9c989701
--- /dev/null
+++ b/src/comet_llm/exceptions/filter_decorator.py
@@ -0,0 +1,56 @@
+# -*- coding: utf-8 -*-
+# *******************************************************
+#   ____                     _               _
+#  / ___|___  _ __ ___   ___| |_   _ __ ___ | |
+# | |   / _ \| '_ ` _ \ / _ \ __| | '_ ` _ \| |
+# | |__| (_) | | | | | |  __/ |_ _| | | | | | |
+#  \____\___/|_| |_| |_|\___|\__(_)_| |_| |_|_|
+#
+#  Sign up for free at https://www.comet.com
+#  Copyright (C) 2015-2023 Comet ML INC
+#  This source code is licensed under the MIT license found in the
+#  LICENSE file in the root directory of this package.
+# *******************************************************
+
+import functools
+import logging
+from typing import TYPE_CHECKING, Any, Callable
+
+from comet_llm import logging as comet_logging
+
+if TYPE_CHECKING:
+    from comet_llm import summary
+
+LOGGER = logging.getLogger(__name__)
+
+
+def filter(allow_raising: bool, summary: "summary.Summary") -> Callable:
+    def decorator(function: Callable) -> Callable:
+        @functools.wraps(function)
+        def wrapper(*args, **kwargs) -> Any:  # type: ignore
+            try:
+                return function(*args, **kwargs)
+            except Exception as exception:
+                summary.increment_failed()
+
+                if allow_raising:
+                    raise
+
+                if getattr(exception, "log_message_once", False):
+                    comet_logging.log_once_at_level(
+                        LOGGER,
+                        logging.ERROR,
+                        str(exception),
+                        exc_info=True,
+                        extra={"show_traceback": True},
+                    )
+                else:
+                    LOGGER.error(
+                        str(exception),
+                        exc_info=True,
+                        extra={"show_traceback": True},
+                    )
+
+        return wrapper
+
+    return decorator
diff --git a/src/comet_llm/handlers/failed_response.py b/src/comet_llm/experiment_api/failed_response_handler.py
similarity index 100%
rename from src/comet_llm/handlers/failed_response.py
rename to src/comet_llm/experiment_api/failed_response_handler.py
diff --git a/src/comet_llm/experiment_api/request_exception_wrapper.py b/src/comet_llm/experiment_api/request_exception_wrapper.py
index d9030327a6..24a88e0a2d 100644
--- a/src/comet_llm/experiment_api/request_exception_wrapper.py
+++ b/src/comet_llm/experiment_api/request_exception_wrapper.py
@@ -21,7 +21,7 @@
 import requests  # type: ignore
 
 from .. import config, exceptions
-from ..handlers import failed_response
+from . import failed_response_handler
 
 LOGGER = logging.getLogger(__name__)
 
@@ -44,7 +44,9 @@ def wrapper(*args, **kwargs) -> Any:  # type: ignore
                             f"installation is up-to-date and check the traceback for more details."
                         )
                 if exception.response is not None:
-                    exception_args.append(failed_response.handle(exception.response))
+                    exception_args.append(
+                        failed_response_handler.handle(exception.response)
+                    )
 
                 _debug_log(exception)
 
diff --git a/src/comet_llm/experiment_info.py b/src/comet_llm/experiment_info.py
index f1f15412e7..f4a88383a2 100644
--- a/src/comet_llm/experiment_info.py
+++ b/src/comet_llm/experiment_info.py
@@ -34,8 +34,11 @@ def get(
     api_key_not_found_message: Optional[str] = None,
 ) -> ExperimentInfo:
     api_key = api_key if api_key else config.api_key()
+
     if api_key is None and api_key_not_found_message is not None:
-        raise exceptions.CometLLMException(api_key_not_found_message)
+        raise exceptions.CometLLMException(
+            api_key_not_found_message, log_message_once=True
+        )
 
     workspace = workspace if workspace else config.workspace()
     project_name = project_name if project_name else config.project_name()
diff --git a/src/comet_llm/logging.py b/src/comet_llm/logging.py
index 8d301f8695..c9c818455e 100644
--- a/src/comet_llm/logging.py
+++ b/src/comet_llm/logging.py
@@ -17,10 +17,10 @@
 import sys
 from typing import Any, Callable
 
-_LOG_ONCE_CACHE = set()
-
 from . import config
 
+_LOG_ONCE_CACHE = set()
+
 
 def setup() -> None:
     root = logging.getLogger("comet_llm")
diff --git a/src/comet_llm/prompts/api.py b/src/comet_llm/prompts/api.py
index 975e7d5206..4262f81ae8 100644
--- a/src/comet_llm/prompts/api.py
+++ b/src/comet_llm/prompts/api.py
@@ -18,11 +18,12 @@
 
 import comet_llm.convert
 
-from .. import app, experiment_api, experiment_info, llm_result
+from .. import app, config, exceptions, experiment_api, experiment_info, llm_result
 from ..chains import version
 from . import convert, preprocess
 
 
+@exceptions.filter(allow_raising=config.raising_enabled(), summary=app.SUMMARY)
 def log_prompt(
     prompt: str,
     output: str,
diff --git a/src/comet_llm/summary.py b/src/comet_llm/summary.py
index 997b9ba36b..6af54b3ed7 100644
--- a/src/comet_llm/summary.py
+++ b/src/comet_llm/summary.py
@@ -12,25 +12,36 @@
 #  LICENSE file in the root directory of this package.
 # *******************************************************
 
+import collections
 import logging
-
-from . import logs_registry
+import threading
+from typing import DefaultDict
 
 LOGGER = logging.getLogger(__name__)
 
 
 class Summary:
     def __init__(self) -> None:
-        self._registry = logs_registry.LogsRegistry()
+        self._logs_registry: DefaultDict[str, int] = collections.defaultdict(lambda: 0)
+        self._failed = 0
+        self._lock = threading.Lock()
 
     def add_log(self, project_url: str, name: str) -> None:
-        if self._registry.empty():
-            LOGGER.info("%s logged to %s", name.capitalize(), project_url)
+        with self._lock:
+            if len(self._logs_registry) == 0:
+                LOGGER.info("%s logged to %s", name.capitalize(), project_url)
 
-        self._registry.register_log(project_url)
+            self._logs_registry[project_url] += 1
 
-    def print(self) -> None:
-        registry_items = self._registry.as_dict().items()
+    def increment_failed(self) -> None:
+        with self._lock:
+            self._failed += 1
 
-        for project, logs_amount in registry_items:
+    def print(self) -> None:
+        for project, logs_amount in self._logs_registry.items():
             LOGGER.info("%d prompts and chains logged to %s", logs_amount, project)
+
+        if self._failed > 0:
+            LOGGER.info(
+                "%d prompts and chains were not logged because of errors", self._failed
+            )
diff --git a/tests/unit/exceptions/test_filter_decorator.py b/tests/unit/exceptions/test_filter_decorator.py
new file mode 100644
index 0000000000..457f8f35d9
--- /dev/null
+++ b/tests/unit/exceptions/test_filter_decorator.py
@@ -0,0 +1,63 @@
+import logging
+
+import pytest
+from testix import *
+
+from comet_llm.exceptions import exceptions, filter_decorator
+
+
+@pytest.fixture(autouse=True)
+def mock_imports(patch_module):
+    patch_module(filter_decorator, "LOGGER")
+    patch_module(filter_decorator, "comet_logging")
+
+
+def test_filter__no_exceptions_raised__nothing_done():
+    NOT_USED = None
+    @filter_decorator.filter(allow_raising=True, summary=NOT_USED)
+    def f():
+        return 42
+
+    assert f() == 42
+
+
+def test_filter__upraising_allowed__function_raised_exception__exception_raised_to_user():
+    @filter_decorator.filter(allow_raising=True, summary=Fake("summary"))
+    def f():
+        raise Exception("some-message")
+
+    with Scenario() as s:
+        s.summary.increment_failed()
+        with pytest.raises(Exception):
+            f()
+
+
+def test_filter__upraising_not_allowed__function_raised_exception__exception_info_logged():
+    @filter_decorator.filter(allow_raising=False, summary=Fake("summary"))
+    def f():
+        raise Exception("some-message")
+
+    with Scenario() as s:
+        s.summary.increment_failed()
+        s.LOGGER.error(
+            "some-message",
+            exc_info=True,
+            extra={"show_traceback": True}
+        )
+        assert f() is None
+
+
+def test_filter__upraising_not_allowed__function_raised_exception__exception_has_log_message_once_attribute_True__exception_info_logged_once():
+    @filter_decorator.filter(allow_raising=False, summary=Fake("summary"))
+    def f():
+        raise exceptions.CometLLMException("some-message", log_message_once=True)
+    with Scenario() as s:
+        s.summary.increment_failed()
+        s.comet_logging.log_once_at_level(
+            filter_decorator.LOGGER,
+            logging.ERROR,
+            "some-message",
+            exc_info=True,
+            extra={"show_traceback": True}
+        )
+        assert f() is None
diff --git a/tests/unit/experiment_api/test_request_exception_wrapper.py b/tests/unit/experiment_api/test_request_exception_wrapper.py
index 28abe04fe9..58a5714871 100644
--- a/tests/unit/experiment_api/test_request_exception_wrapper.py
+++ b/tests/unit/experiment_api/test_request_exception_wrapper.py
@@ -1,17 +1,18 @@
 import json
 
+import box
 import pytest
 import requests
 from testix import *
 
-from comet_llm import exceptions
+from comet_llm.exceptions import exceptions
 from comet_llm.experiment_api import request_exception_wrapper
 
 
 @pytest.fixture(autouse=True)
 def mock_imports(patch_module):
     patch_module(request_exception_wrapper, "config")
-    patch_module(request_exception_wrapper, "failed_response")
+    patch_module(request_exception_wrapper, "failed_response_handler")
 
 
 def test_wrap_no_exceptions():
@@ -56,18 +57,18 @@ def f():
 
 
 def test_wrap__request_exception_non_llm_project_sdk_code__log_specifc_message_in_exception():
+    response = box.Box(text=json.dumps({"sdk_error_code": 34323}))
+
     @request_exception_wrapper.wrap()
     def f():
         exception = requests.RequestException()
-        response = requests.Response
-        response.text = json.dumps({"sdk_error_code": 34323})
         exception.response = response
         raise exception
 
     expected_log_message = "Failed to send prompt to the specified project as it is not an LLM project, please specify a different project name."
 
     with Scenario() as s:
-        s.failed_response.handle(requests.Response) >> expected_log_message
+        s.failed_response_handler.handle(response) >> expected_log_message
         with pytest.raises(exceptions.CometLLMException) as excinfo:
             f()
 
diff --git a/tests/unit/prompts/test_preprocess.py b/tests/unit/prompts/test_preprocess.py
index 888aab8158..958f43676a 100644
--- a/tests/unit/prompts/test_preprocess.py
+++ b/tests/unit/prompts/test_preprocess.py
@@ -1,7 +1,7 @@
 import pytest
 from testix import *
 
-from comet_llm import exceptions
+from comet_llm.exceptions import exceptions
 from comet_llm.prompts import preprocess
 
 
diff --git a/tests/unit/test_experiment_info.py b/tests/unit/test_experiment_info.py
index 2ccd9d75d3..16e8be1fc6 100644
--- a/tests/unit/test_experiment_info.py
+++ b/tests/unit/test_experiment_info.py
@@ -1,7 +1,8 @@
 import pytest
 from testix import *
 
-from comet_llm import exceptions, experiment_info
+from comet_llm import experiment_info
+from comet_llm.exceptions import exceptions
 
 
 @pytest.fixture(autouse=True)
@@ -13,7 +14,7 @@ def test_get__api_key_not_specified_and_not_found_in_config__exception_raised():
     with Scenario() as s:
         s.config.api_key() >> None
 
-        with pytest.raises(exceptions.CometLLMException, match="error-message"):
+        with pytest.raises(exceptions.CometLLMException, match="error-message") as exc_info:
             experiment_info.get(
                 None,
                 "the-workspace",
diff --git a/tests/unit/test_logs_registry.py b/tests/unit/test_logs_registry.py
deleted file mode 100644
index 3bb9bb75f8..0000000000
--- a/tests/unit/test_logs_registry.py
+++ /dev/null
@@ -1,24 +0,0 @@
-from comet_llm import logs_registry
-
-
-def test_happyflow():
-    tested = logs_registry.LogsRegistry()
-
-    tested.register_log("project-url-1")
-    tested.register_log("project-url-2")
-    tested.register_log("project-url-1")
-
-    tested.as_dict() == {
-        "project-url-1": 2,
-        "project-url-2": 1
-    }
-
-
-def test_empty():
-    tested = logs_registry.LogsRegistry()
-
-    assert tested.empty()
-
-    tested.register_log("project-url-1")
-
-    assert not tested.empty()
\ No newline at end of file
diff --git a/tests/unit/test_summary.py b/tests/unit/test_summary.py
index ea9bdea429..ef4558f46c 100644
--- a/tests/unit/test_summary.py
+++ b/tests/unit/test_summary.py
@@ -7,49 +7,27 @@
 
 @pytest.fixture(autouse=True)
 def mock_imports(patch_module):
-    patch_module(summary, "logs_registry")
     patch_module(summary, "LOGGER")
 
 
-def _construct():
-    with Scenario() as s:
-        s.logs_registry.LogsRegistry() >> Fake("registry")
-        tested = summary.Summary()
-
-    return tested
-
-def test_add_log__registry_empty__report_about_first_log__name_capitalized():
-    tested = _construct()
+def test_add_log__first_log_reported__name_capitalized():
+    tested = summary.Summary()
 
     with Scenario() as s:
-        s.registry.empty() >> True
         s.LOGGER.info("%s logged to %s", "The-name", "project-url")
-        s.registry.register_log("project-url")
         tested.add_log("project-url", "the-name")
 
-
-def test_add_log__registry_not_empty__no_additional_logs():
-    tested = _construct()
-
-    with Scenario() as s:
-        s.registry.empty() >> False
-        s.registry.register_log("project-url")
-        tested.add_log("project-url", NOT_USED)
-
-
-def test_print__registry_empty__nothing_printed():
-    tested = _construct()
-
-    with Scenario() as s:
-        s.registry.as_dict() >> {}
-        tested.print()
-
-
 def test_print__happyflow():
-    tested = _construct()
+    tested = summary.Summary()
 
     with Scenario() as s:
-        s.registry.as_dict() >> {"project-url-1": 5, "project-url-2": 10}
-        s.LOGGER.info("%d prompts and chains logged to %s", 5, "project-url-1")
-        s.LOGGER.info("%d prompts and chains logged to %s", 10, "project-url-2")
+        s.LOGGER.info("%s logged to %s", "The-name-1", "project-url-1")
+        tested.add_log("project-url-1", "the-name-1")
+        tested.add_log("project-url-2", "the-name-2")
+        tested.increment_failed()
+        tested.increment_failed()
+
+        s.LOGGER.info("%d prompts and chains logged to %s", 1, "project-url-1")
+        s.LOGGER.info("%d prompts and chains logged to %s", 1, "project-url-2")
+        s.LOGGER.info("%d prompts and chains were not logged because of errors", 2)
         tested.print()