diff --git a/README.md b/README.md
index 59a3efc..937bce4 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,10 @@
-**Hello world!!!**
+## Overview
+This block (`block.py`) is responsible for preparing and validating inputs for the model. It performs data cleansing and returns a normalized output dictionary.
+
+## Key Inputs & Outputs
+- **Request**: Refer to `request_schema.json` for detailed input fields and validation rules.  
+- **Response**: Refer to `response_schema.json` for the returned structure and data types.
+
+## Implementation Details
+- All core logic resides in `block.py` within the `__main__` function.
+- Example usage and validation are demonstrated in `test_block.py`.
diff --git a/block.py b/block.py
index 3b227f9..66a3536 100644
--- a/block.py
+++ b/block.py
@@ -1,21 +1,220 @@
-@flowx_block
-def example_function(request: dict) -> dict:
+import logging
+import math
 
-  # Processing logic here...
+# Configure logging
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(name)s - %(message)s",
+)
+logger = logging.getLogger(__name__)
 
-  return {
-    "meta_info": [
-      {
-        "name": "created_date",
-        "type": "string",
-        "value": "2024-11-05"
-      }
-    ],
-    "fields": [
-      {
-        "name": "",
-        "type": "",
-        "value": ""
-      }
-    ]
-  }
+def __main__(record_counts_negative_trade_count:int, record_counts_installment_trade_count:int, 
+             record_counts_total_trade_count:int, record_counts_total_inquiry_count:int, record_counts_revolving_trade_count:int, 
+             score_results:float, installment_amount_monthly_payment:float, revolving_amount_percent_available_credit:float, G069S:int, 
+             AT24S:int, BR02S:int, BI02S:int, AGG103:float, ALL231:float, AT12S:int, IN20S:int, AT33A:int, AT35A:int, AT28A:int, AT34B:int, 
+             S061S:int, RE102S:int)->dict:
+
+    #record_counts_negative_trade_count treatment
+    if record_counts_negative_trade_count is None or math.isnan(record_counts_negative_trade_count):
+        record_counts_negative_trade_count = 8
+    elif 0 <= record_counts_negative_trade_count <= 999:
+        record_counts_negative_trade_count = min(8, max(0, record_counts_negative_trade_count))
+    else:
+        record_counts_negative_trade_count = None
+
+    #record_counts_installment_trade_count treatment
+    if record_counts_installment_trade_count is None or math.isnan(record_counts_installment_trade_count):
+        record_counts_installment_trade_count = 20
+    elif 0 <= record_counts_installment_trade_count <= 999:
+        record_counts_installment_trade_count = min(20, max(0, record_counts_installment_trade_count))
+    else:
+        record_counts_installment_trade_count = None
+
+    #record_counts_total_trade_count treatment
+    if record_counts_total_trade_count is None or math.isnan(record_counts_total_trade_count):
+        record_counts_total_trade_count = 35
+    elif 0 <= record_counts_total_trade_count <= 999:
+        record_counts_total_trade_count = min(35, max(0, record_counts_total_trade_count))
+    else:
+        record_counts_total_trade_count = None
+
+    #record_counts_total_inquiry_count treatment
+    if record_counts_total_inquiry_count is None or math.isnan(record_counts_total_inquiry_count):
+        record_counts_total_inquiry_count = 30
+    elif 0 <= record_counts_total_inquiry_count <= 999:
+        record_counts_total_inquiry_count = min(30, max(0, record_counts_total_inquiry_count))
+    else:
+        record_counts_total_inquiry_count = None
+
+    #record_counts_revolving_trade_count treatment
+    if record_counts_revolving_trade_count is None or math.isnan(record_counts_revolving_trade_count):
+        record_counts_revolving_trade_count = 15
+    elif 0 <= record_counts_revolving_trade_count <= 999:
+        record_counts_revolving_trade_count = min(15, max(0, record_counts_revolving_trade_count))
+    else:
+        record_counts_revolving_trade_count = None
+
+    #score_results treatment
+    if score_results is None or math.isnan(score_results):
+        score_results = 541.0
+    elif 350.0 <= score_results <= 850.0:
+        score_results = min(700.0, max(541.0, score_results))
+    else:
+        score_results = None
+
+    #installment_amount_monthly_payment treatment
+    if installment_amount_monthly_payment is None or math.isnan(installment_amount_monthly_payment):
+        installment_amount_monthly_payment = 456.8794643
+    elif 0.0 <= installment_amount_monthly_payment <= 999999999.0:
+        installment_amount_monthly_payment = min(1500.0, max(0.0, installment_amount_monthly_payment))
+    else:
+        installment_amount_monthly_payment = None
+
+    #revolving_amount_percent_available_credit treatment
+    if revolving_amount_percent_available_credit is None or math.isnan(revolving_amount_percent_available_credit):
+        revolving_amount_percent_available_credit = 100.0
+    elif 0.0 <= revolving_amount_percent_available_credit <= 100.0:
+        revolving_amount_percent_available_credit = min(100.0, max(0.0, revolving_amount_percent_available_credit))
+    else:
+        revolving_amount_percent_available_credit = None
+
+    #G069S treatment
+    if G069S is None or math.isnan(G069S):
+        G069S = 0
+    elif 0 <= G069S <= 999:
+        G069S = min(6, max(0, G069S))
+    else:
+        G069S = 0
+
+    #AT24S treatment
+    if AT24S is None or math.isnan(AT24S):
+        AT24S = 0
+    elif 0 <= AT24S <= 999:
+        AT24S = min(20, max(0, AT24S))
+    else:
+        AT24S = 0
+
+    #BR02S treatment
+    if BR02S is None or math.isnan(BR02S):
+        BR02S = 0
+    elif 0 <= BR02S <= 999:
+        BR02S = min(5, max(0, BR02S))
+    else:
+        BR02S = 0
+
+    #BI02S treatment
+    if BI02S is None or math.isnan(BI02S):
+        BI02S = 0
+    elif 0 <= BI02S <= 999:
+        BI02S = min(3, max(0, BI02S))
+    else:
+        BI02S = 0
+
+    #AGG103 treatment
+    if AGG103 is None or math.isnan(AGG103):
+        AGG103 = 0.0
+    elif 0.0 <= AGG103 <= 999999999.0:
+        AGG103 = min(60000.0, max(0.0, AGG103))
+    else:
+        AGG103 = 0.0
+
+    #ALL231 treatment
+    if ALL231 is None or math.isnan(ALL231):
+        ALL231 = 0.0
+    elif 0.0 <= ALL231 <= 999999999.0:
+        ALL231 = min(500.0, max(0.0, ALL231))
+    else:
+        ALL231 = 0.0
+
+    #AT12S treatment
+    if AT12S is None or math.isnan(AT12S):
+        AT12S = 0
+    elif 0 <= AT12S <= 999:
+        AT12S = min(10, max(0, AT12S))
+    else:
+        AT12S = 0
+
+    #IN20S treatment
+    if IN20S is None or math.isnan(IN20S):
+        IN20S = 0
+    elif 0 <= IN20S <= 999:
+        IN20S = min(150, max(0, IN20S))
+    else:
+        IN20S = 0
+
+    #AT33A treatment
+    if AT33A is None or math.isnan(AT33A):
+        AT33A = 0
+    elif 0 <= AT33A <= 999999999:
+        AT33A = min(100000, max(0, AT33A))
+    else:
+        AT33A = 0
+
+    #AT35A treatment
+    if AT35A is None or math.isnan(AT35A):
+        AT35A = 0
+    elif 0 <= AT35A <= 999999999:
+        AT35A = min(15000, max(0, AT35A))
+    else:
+        AT35A = 0
+
+    #AT28A treatment
+    if AT28A is None or math.isnan(AT28A):
+        AT28A = 0
+    elif 0 <= AT28A <= 999999999:
+        AT28A = min(80000, max(0, AT28A))
+    else:
+        AT28A = 0
+
+    #AT34B treatment
+    if AT34B is None or math.isnan(AT34B):
+        AT34B = 150
+    elif 0 <= AT34B <= 999:
+        AT34B = min(150, max(0, AT34B))
+    else:
+        AT34B = 0
+
+    #S061S treatment
+    if S061S is None or math.isnan(S061S):
+        S061S = 40
+    elif 0 <= S061S <= 84:
+        S061S = min(40, max(0, S061S))
+    else:
+        S061S = 0
+
+    #RE102S treatment
+    if RE102S is None or math.isnan(RE102S):
+        RE102S = 0
+    elif 0 <= RE102S <= 999999999:
+        RE102S = min(3000, max(0, RE102S))
+    else:
+        RE102S = 0
+
+    output_data = {
+        "score_results" : score_results,
+        "AT34B" : AT34B,
+        "AT12S" : AT12S,
+        "revolving_amount_percent_available_credit" : revolving_amount_percent_available_credit,
+        "AT28A" : AT28A,
+        "record_counts_total_trade_count" : record_counts_total_trade_count,
+        "record_counts_negative_trade_count" : record_counts_negative_trade_count,
+        "record_counts_revolving_trade_count" : record_counts_revolving_trade_count,
+        "AT33A" : AT33A,
+        "AT35A" : AT35A,
+        "record_counts_total_inquiry_count" : record_counts_total_inquiry_count,
+        "IN20S" : IN20S,
+        "RE102S" : RE102S,
+        "installment_amount_monthly_payment" : installment_amount_monthly_payment,
+        "S061S" : S061S,
+        "record_counts_installment_trade_count" : record_counts_installment_trade_count,
+        "BR02S" : BR02S,
+        "AGG103" : AGG103,
+        "ALL231" : ALL231,
+        "G069S" : G069S,
+        "AT24S" : AT24S,
+        "BI02S" : BI02S
+    }
+
+    logger.info(f"Repeat V1 Pre preocessed data: {output_data}")
+
+    return output_data
\ No newline at end of file
diff --git a/request_schema.json b/request_schema.json
index 0967ef4..d924bf0 100644
--- a/request_schema.json
+++ b/request_schema.json
@@ -1 +1,95 @@
-{}
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": "object",
+  "properties": {
+    "record_counts_negative_trade_count": {
+      "type": ["integer", "null"],
+      "description": "Number of financial transactions that resulted in a negative impact."
+    },
+    "record_counts_installment_trade_count": {
+      "type": ["integer", "null"],
+      "description": "The total count of installment trade records (fixed repayment schedules)."
+    },
+    "record_counts_total_trade_count": {
+      "type": ["integer", "null"],
+      "description": "Total number of trade-related (transaction) records."
+    },
+    "record_counts_total_inquiry_count": {
+      "type": ["integer", "null"],
+      "description": "Number of times the user has made an inquiry."
+    },
+    "record_counts_revolving_trade_count": {
+      "type": ["integer", "null"],
+      "description": "Records related to revolving trade accounts (e.g., credit card accounts)."
+    },
+    "score_results": {
+      "type": ["number", "null"],
+      "description": "TransUnion credit score."
+    },
+    "installment_amount_monthly_payment": {
+      "type": ["number", "null"],
+      "description": "The monthly payment amount for installment credit accounts."
+    },
+    "revolving_amount_percent_available_credit": {
+      "type": ["number", "null"],
+      "description": "Percentage of available credit utilized in revolving credit accounts."
+    },
+    "G069S": {
+      "type": ["integer", "null"],
+      "description": "Number of trades 90 or more days past due in the past 12 months."
+    },
+    "AT24S": {
+      "type": ["integer", "null"],
+      "description": "Number of currently open and satisfactory trades that are 6 months or older."
+    },
+    "BR02S": {
+      "type": ["integer", "null"],
+      "description": "Number of open bank revolving trades."
+    },
+    "BI02S": {
+      "type": ["integer", "null"],
+      "description": "Number of open bank installment trades."
+    },
+    "AGG103": {
+      "type": ["number", "null"],
+      "description": "Aggregate non-mortgage balances for month 3."
+    },
+    "ALL231": {
+      "type": ["number", "null"],
+      "description": "Aggregate excess payment for all accounts over the past month."
+    },
+    "AT12S": {
+      "type": ["integer", "null"],
+      "description": "Number of open trades verified in the past 12 months."
+    },
+    "IN20S": {
+      "type": ["integer", "null"],
+      "description": "Months since the oldest installment trade was opened."
+    },
+    "AT33A": {
+      "type": ["integer", "null"],
+      "description": "Total balance of open trades verified in the past 12 months."
+    },
+    "AT35A": {
+      "type": ["integer", "null"],
+      "description": "Average balance of open trades verified in the past 12 months."
+    },
+    "AT28A": {
+      "type": ["integer", "null"],
+      "description": "Total credit line of open trades verified in the past 12 months."
+    },
+    "AT34B": {
+      "type": ["integer", "null"],
+      "description": "Utilization for open trades verified in the past 12 months (excluding mortgage and home equity)."
+    },
+    "S061S": {
+      "type": ["integer", "null"],
+      "description": "Months since most recent 60 or more days past due."
+    },
+    "RE102S": {
+      "type": ["integer", "null"],
+      "description": "Average credit line of open revolving trades verified in the past 12 months."
+    }
+  },
+  "required": []
+}
diff --git a/requirements.txt b/requirements.txt
index 0967ef4..8c4acbc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-{}
+jsonschema==4.23.0
\ No newline at end of file
diff --git a/response_schema.json b/response_schema.json
index 0967ef4..8fb21db 100644
--- a/response_schema.json
+++ b/response_schema.json
@@ -1 +1,94 @@
-{}
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": "object",
+  "properties": {
+    "score_results": {
+      "type": ["number", "null"],
+      "description": "TransUnion credit score."
+    },
+    "AT34B": {
+      "type": ["integer", "null"],
+      "description": "Utilization for open trades verified in the past 12 months (excluding mortgage and home equity)."
+    },
+    "AT12S": {
+      "type": ["integer", "null"],
+      "description": "Number of open trades verified in the past 12 months."
+    },
+    "revolving_amount_percent_available_credit": {
+      "type": ["number", "null"],
+      "description": "Percentage of available credit utilized in revolving credit accounts."
+    },
+    "AT28A": {
+      "type": ["integer", "null"],
+      "description": "Total credit line of open trades verified in the past 12 months."
+    },
+    "record_counts_total_trade_count": {
+      "type": ["integer", "null"],
+      "description": "Total number of trade-related (transaction) records."
+    },
+    "record_counts_negative_trade_count": {
+      "type": ["integer", "null"],
+      "description": "Number of financial transactions that resulted in a negative impact."
+    },
+    "record_counts_revolving_trade_count": {
+      "type": ["integer", "null"],
+      "description": "Records related to revolving trade accounts (e.g., credit card accounts)."
+    },
+    "AT33A": {
+      "type": ["integer", "null"],
+      "description": "Total balance of open trades verified in the past 12 months."
+    },
+    "AT35A": {
+      "type": ["integer", "null"],
+      "description": "Average balance of open trades verified in the past 12 months."
+    },
+    "record_counts_total_inquiry_count": {
+      "type": ["integer", "null"],
+      "description": "Number of times the user has made an inquiry."
+    },
+    "IN20S": {
+      "type": ["integer", "null"],
+      "description": "Months since the oldest installment trade was opened."
+    },
+    "RE102S": {
+      "type": ["integer", "null"],
+      "description": "Average credit line of open revolving trades verified in the past 12 months."
+    },
+    "installment_amount_monthly_payment": {
+      "type": ["number", "null"],
+      "description": "The monthly payment amount for installment credit accounts."
+    },
+    "S061S": {
+      "type": ["integer", "null"],
+      "description": "Months since most recent 60 or more days past due."
+    },
+    "record_counts_installment_trade_count": {
+      "type": ["integer", "null"],
+      "description": "The total count of installment trade records (fixed repayment schedules)."
+    },
+    "BR02S": {
+      "type": ["integer", "null"],
+      "description": "Number of open bank revolving trades."
+    },
+    "AGG103": {
+      "type": ["number", "null"],
+      "description": "Aggregate non-mortgage balances for month 3."
+    },
+    "ALL231": {
+      "type": ["number", "null"],
+      "description": "Aggregate excess payment for all accounts over the past month."
+    },
+    "G069S": {
+      "type": ["integer", "null"],
+      "description": "Number of trades 90 or more days past due in the past 12 months."
+    },
+    "AT24S": {
+      "type": ["integer", "null"],
+      "description": "Number of currently open and satisfactory trades 6 months or older."
+    },
+    "BI02S": {
+      "type": ["integer", "null"],
+      "description": "Number of open bank installment trades."
+    }
+  }
+}
diff --git a/test_block.py b/test_block.py
new file mode 100644
index 0000000..7ff4642
--- /dev/null
+++ b/test_block.py
@@ -0,0 +1,32 @@
+import unittest
+from block import __main__
+
+class TestBlock(unittest.TestCase):
+
+    def test_main_success(self):
+        result = __main__(record_counts_negative_trade_count=7, record_counts_installment_trade_count=8,
+                          record_counts_total_trade_count=18, record_counts_total_inquiry_count=3,
+                          record_counts_revolving_trade_count=9, score_results=600.0,
+                          installment_amount_monthly_payment=572, revolving_amount_percent_available_credit=18,
+                          G069S=3, AT24S=6, BR02S=1, BI02S=5, AGG103=27642.0, ALL231=-2.0, AT12S=7, IN20S=166,
+                          AT33A=38353, AT35A=5479, AT28A=54087, AT34B=71, S061S=1, RE102S=2000)
+
+        expected_result = {'score_results': 600.0, 'AT34B': 71, 'AT12S': 7, 'revolving_amount_percent_available_credit': 18, 'AT28A': 54087, 'record_counts_total_trade_count': 18, 'record_counts_negative_trade_count': 7, 'record_counts_revolving_trade_count': 9, 'AT33A': 38353, 'AT35A': 5479, 'record_counts_total_inquiry_count': 3, 'IN20S': 150, 'RE102S': 2000, 'installment_amount_monthly_payment': 572, 'S061S': 1, 'record_counts_installment_trade_count': 8, 'BR02S': 1, 'AGG103': 27642.0, 'ALL231': 0.0, 'G069S': 3, 'AT24S': 6, 'BI02S': 3}
+        
+        for key, expected_value in expected_result.items():
+            if isinstance(expected_value, float):
+                self.assertAlmostEqual(result[key], expected_value, places=6, msg=f"Mismatch for {key}")
+            else:
+                self.assertEqual(result[key], expected_value, msg=f"Mismatch for {key}")
+
+    # def test_main_invalid_input(self):
+    #     with self.assertRaises(TypeError):
+    #         __main__(record_counts_negative_trade_count=7, record_counts_installment_trade_count=8,
+    #                  record_counts_total_trade_count=18, record_counts_total_inquiry_count=3,
+    #                  record_counts_revolving_trade_count=9, score_results=600, installment_amount_monthly_payment=572,
+    #                  revolving_amount_percent_available_credit=18, G069S=3, AT24S=6, BR02S=1, BI02S=5,
+    #                  AGG103=27642, ALL231=-2, AT12S=7, IN20S=166, AT33A=38353, AT35A=5479, AT28A=54087,
+    #                  AT34B=71, S061S=1, RE102S=2000)
+
+if __name__ == "__main__":
+    unittest.main()