diff --git a/src/road_core_eval/query_rag.py b/src/road_core_eval/query_rag.py
index 8bf8105..c07eb5b 100644
--- a/src/road_core_eval/query_rag.py
+++ b/src/road_core_eval/query_rag.py
@@ -29,6 +29,7 @@
 
 
 def main():
+    """Query RAG vector database"""
     parser = argparse.ArgumentParser(
         description="Utility script for querying RAG database"
     )
diff --git a/src/road_core_eval/response_evaluation.py b/src/road_core_eval/response_evaluation.py
index 213666a..327785e 100644
--- a/src/road_core_eval/response_evaluation.py
+++ b/src/road_core_eval/response_evaluation.py
@@ -5,8 +5,8 @@
 from collections import defaultdict
 from datetime import UTC, datetime
 from time import sleep
-from httpx import Client
 from argparse import Namespace
+from httpx import Client
 
 from pandas import DataFrame, concat, read_csv, read_parquet
 from tqdm import tqdm
@@ -30,7 +30,7 @@
 tqdm.pandas()
 
 
-# TODO: OLS-712 Enrichment of Q+A pairs to contain questions with attachments
+# TODO: OLS-712 Enrichment of Q+A pairs to contain questions with attachments pylint: disable=W0511
 class ResponseEvaluation:
     """Evaluate LLM response."""
 
@@ -84,7 +84,7 @@ def _load_config_and_rag(self) -> None:
             # load rag index
             config.rag_index  # pylint: disable=W0104
             if config.rag_index is None:
-                raise Exception("No valid rag index for ols_rag mode")
+                raise ValueError("No valid rag index for ols_rag mode")
 
     def _load_qna_pool_parquet(self) -> DataFrame:
         """Load QnA pool from parquet file."""
@@ -149,6 +149,7 @@ def _get_inscope_qna(self, provider_model_id: str) -> DataFrame:
         qna_pool_df = qna_pool_df[qna_pool_df.in_use]
         return qna_pool_df.reset_index(drop=True).drop(columns="in_use")
 
+    # pylint: disable=R0913,R0917
     def _get_api_response(
         self,
         question: str,
@@ -173,7 +174,7 @@ def _get_api_response(
                     self._api_client,
                 )
                 break
-            except Exception:
+            except Exception:  # pylint: disable=W0718
                 if retry_counter == retry_attempts - 1:
                     raise
             # model is not realiable if it's overloaded, so take some time between requests
@@ -185,6 +186,7 @@ def _get_api_response(
         )
         return response
 
+    # pylint: disable=R0913,R0917
     def _get_recent_response(
         self,
         question: str,
@@ -274,7 +276,7 @@ def _get_response_with_score(self) -> DataFrame:
                         f"{provider_model_id.replace('/', '-')}.csv"
                     )
                     print("Temp score file exists. Proceeding without calculation.")
-                except Exception:
+                except Exception:  # pylint: disable=W0718
                     print("Temp score doesn't exist. Proceeding with calculation.")
                     qna_pool_df = self._get_inscope_qna(provider_model_id)
                     qna_pool_df = self._get_model_response(
diff --git a/src/road_core_eval/utils/models.py b/src/road_core_eval/utils/models.py
index 496aff2..abfe95e 100644
--- a/src/road_core_eval/utils/models.py
+++ b/src/road_core_eval/utils/models.py
@@ -7,6 +7,7 @@
 from ols.src.llms.providers.watsonx import Watsonx
 
 
+# pylint: disable=R0903
 class OpenAIVanilla(OpenAI):
     """OpenAI provider."""
 
@@ -30,6 +31,7 @@ def default_params(self):
         }
 
 
+# pylint: disable=R0903
 class AzureOpenAIVanilla(AzureOpenAI):
     """Azure OpenAI provider."""
 
@@ -68,6 +70,7 @@ def default_params(self):
         return default_parameters
 
 
+# pylint: disable=R0903
 class WatsonxVanilla(Watsonx):
     """Watsonx provider."""
 
diff --git a/src/road_core_eval/utils/prompts.py b/src/road_core_eval/utils/prompts.py
index a09e6f3..63b6f26 100644
--- a/src/road_core_eval/utils/prompts.py
+++ b/src/road_core_eval/utils/prompts.py
@@ -7,6 +7,7 @@
 You are a helpful assistant.
 """
 
+# pylint: disable=C0301
 # Below is inspired by both ragas & langchain internal/example prompts.
 ANSWER_RELEVANCY_PROMPT = """You are an helpful assistant. Your task is to analyze answer and come up with questions from the given answer.
 Given the following answer delimited by three backticks please generate {num_questions} questions.
diff --git a/src/road_core_eval/utils/relevancy_score.py b/src/road_core_eval/utils/relevancy_score.py
index d44512a..2cec4b6 100644
--- a/src/road_core_eval/utils/relevancy_score.py
+++ b/src/road_core_eval/utils/relevancy_score.py
@@ -11,7 +11,7 @@
 from road_core_eval.utils.prompts import ANSWER_RELEVANCY_PROMPT
 
 
-class AnswerRelevancyScore:
+class AnswerRelevancyScore:  # pylint: disable=R0903
     """Calculate response/answer relevancy score."""
 
     def __init__(self, judge_llm, embedding_model):
@@ -53,7 +53,7 @@ def get_score(
                 gen_questions = "\n".join(gen_questions)
                 break
 
-            except Exception as e:
+            except Exception as e:  # pylint: disable=W0718
                 if retry_counter == retry_attempts - 1:
                     print(f"error_answer_relevancy: {e}")
                     score, valid_flag, gen_questions = None, None, None
diff --git a/src/road_core_eval/utils/response.py b/src/road_core_eval/utils/response.py
index 39402e3..03b1c1b 100644
--- a/src/road_core_eval/utils/response.py
+++ b/src/road_core_eval/utils/response.py
@@ -6,6 +6,7 @@
 from ols import config
 from ols.constants import GenericLLMParameters
 from ols.src.prompts.prompt_generator import GeneratePrompt
+from requests import HTTPError
 
 from road_core_eval.constants import REST_API_TIMEOUT
 from road_core_eval.utils.models import MODEL_OLS_PARAM, VANILLA_MODEL
@@ -30,7 +31,7 @@ def get_model_response(
             timeout=REST_API_TIMEOUT,
         )
         if response.status_code != 200:
-            raise Exception(response)
+            raise HTTPError(response=response)
         return response.json()["response"].strip()
 
     prompt = PromptTemplate.from_template("{query}")
diff --git a/src/road_core_eval/utils/score.py b/src/road_core_eval/utils/score.py
index 99631af..75ad0b7 100644
--- a/src/road_core_eval/utils/score.py
+++ b/src/road_core_eval/utils/score.py
@@ -12,7 +12,7 @@
 from road_core_eval.utils.similarity_score_llm import AnswerSimilarityScore
 
 
-class ResponseScore:
+class ResponseScore:  # pylint: disable=R0903
     """Calculate response score."""
 
     def __init__(self, eval_metrics: list, judge_provider: str, judge_model: str):
@@ -39,7 +39,9 @@ def __init__(self, eval_metrics: list, judge_provider: str, judge_model: str):
             if "answer_similarity_llm" in judge_llm_required:
                 self._llm_similarity_scorer = AnswerSimilarityScore(judge_llm)
 
-    def calculate_scores(self, query: str, answer: str, response: str) -> tuple:
+    def calculate_scores(  # pylint: disable=R0914
+        self, query: str, answer: str, response: str
+    ) -> tuple:
         """Calculate different similarity scores for two strings."""
         res_vec = self._embedding_model.get_text_embedding(response)
         ans_vec = self._embedding_model.get_text_embedding(answer)
diff --git a/src/road_core_eval/utils/similarity_score_llm.py b/src/road_core_eval/utils/similarity_score_llm.py
index 7551387..96975fa 100644
--- a/src/road_core_eval/utils/similarity_score_llm.py
+++ b/src/road_core_eval/utils/similarity_score_llm.py
@@ -8,7 +8,7 @@
 from road_core_eval.utils.prompts import ANSWER_SIMILARITY_PROMPT
 
 
-class AnswerSimilarityScore:
+class AnswerSimilarityScore:  # pylint: disable=R0903
     """Get similarity score generated by LLM."""
 
     def __init__(self, judge_llm):
@@ -16,6 +16,7 @@ def __init__(self, judge_llm):
         prompt = PromptTemplate.from_template(ANSWER_SIMILARITY_PROMPT)
         self._judge_llm = prompt | judge_llm
 
+    # pylint: disable=R0913,R0917
     def get_score(
         self,
         question,
@@ -37,7 +38,7 @@ def get_score(
                 )
                 score = float(result.content) / 10
                 break
-            except Exception as e:
+            except Exception as e:  # pylint: disable=W0718
                 if retry_counter == retry_attempts - 1:
                     print(f"error_answer_relevancy: {e}")
                     # Continue with score as None