diff --git a/feature-builder/builder-task/orca-agent/requirements.txt b/feature-builder/builder-task/orca-agent/requirements.txt
index a384969e..2c7a60e8 100644
--- a/feature-builder/builder-task/orca-agent/requirements.txt
+++ b/feature-builder/builder-task/orca-agent/requirements.txt
@@ -19,3 +19,4 @@ colorama>=0.4.6
 pymongo>=4.11.0
 PyNaCl>=1.5.0
 setuptools>=78.1.0
+flask
diff --git a/feature-builder/builder-task/orca-agent/src/server/routes/__init__.py b/feature-builder/builder-task/orca-agent/src/server/routes/__init__.py
new file mode 100644
index 00000000..5e37eee3
--- /dev/null
+++ b/feature-builder/builder-task/orca-agent/src/server/routes/__init__.py
@@ -0,0 +1,23 @@
+"""
+Route registration for the server application.
+"""
+
+from .task import register_task_routes
+from .submission import register_submission_routes
+from .audit import register_audit_routes
+from .healthz import healthz_route
+from .evidence_uniqueness import register_evidence_uniqueness_routes
+
+def register_routes(app, *args, **kwargs):
+    """
+    Register all routes for the application.
+
+    Args:
+        app: Flask application instance
+    """
+    # Register individual route groups
+    healthz_route(app)
+    register_task_routes(app, *args, **kwargs)
+    register_submission_routes(app, *args, **kwargs)
+    register_audit_routes(app, *args, **kwargs)
+    register_evidence_uniqueness_routes(app, *args, **kwargs)
\ No newline at end of file
diff --git a/feature-builder/builder-task/orca-agent/src/server/routes/evidence_uniqueness.py b/feature-builder/builder-task/orca-agent/src/server/routes/evidence_uniqueness.py
new file mode 100644
index 00000000..c102bb74
--- /dev/null
+++ b/feature-builder/builder-task/orca-agent/src/server/routes/evidence_uniqueness.py
@@ -0,0 +1,110 @@
+"""
+Server-side route for evidence uniqueness validation.
+
+This module provides server-side validation to ensure the uniqueness of evidence
+in the system, preventing duplicate submissions.
+"""
+
+from typing import Dict, Any
+from flask import request, jsonify
+from flask.views import MethodView
+
+class EvidenceUniquenessValidationRoute(MethodView):
+    """
+    Route class for validating the uniqueness of evidence.
+    """
+
+    def __init__(self, database_service):
+        """
+        Initialize the route with a database service.
+
+        Args:
+            database_service: Service for database operations
+        """
+        self.database_service = database_service
+
+    def post(self) -> Dict[str, Any]:
+        """
+        Validate the uniqueness of submitted evidence.
+
+        Returns:
+            A JSON response indicating the uniqueness status of the evidence.
+        """
+        try:
+            # Get the evidence data from the request
+            evidence_data = request.json
+
+            if not evidence_data:
+                return jsonify({
+                    "status": "error",
+                    "message": "No evidence data provided"
+                }), 400
+
+            # Extract unique identifiers for validation
+            unique_fields = evidence_data.get('unique_fields', [])
+            
+            if not unique_fields:
+                return jsonify({
+                    "status": "error", 
+                    "message": "No unique fields specified for validation"
+                }), 400
+
+            # Perform uniqueness check in the database
+            uniqueness_results = self._check_evidence_uniqueness(unique_fields)
+
+            if not uniqueness_results['is_unique']:
+                return jsonify({
+                    "status": "error",
+                    "message": "Evidence is not unique",
+                    "duplicate_fields": uniqueness_results['duplicate_fields']
+                }), 409
+
+            return jsonify({
+                "status": "success",
+                "message": "Evidence is unique"
+            }), 200
+
+        except Exception as e:
+            return jsonify({
+                "status": "error",
+                "message": f"Uniqueness validation failed: {str(e)}"
+            }), 500
+
+    def _check_evidence_uniqueness(self, unique_fields: Dict[str, Any]) -> Dict[str, Any]:
+        """
+        Check the uniqueness of evidence based on specified fields.
+
+        Args:
+            unique_fields (dict): Dictionary of fields to check for uniqueness
+
+        Returns:
+            Dict containing uniqueness status and any duplicate fields
+        """
+        duplicate_fields = {}
+        
+        for field, value in unique_fields.items():
+            # Check if the field exists and has a value matching any existing record
+            existing_record = self.database_service.find_by_field(field, value)
+            
+            if existing_record:
+                duplicate_fields[field] = value
+
+        return {
+            'is_unique': len(duplicate_fields) == 0,
+            'duplicate_fields': duplicate_fields
+        }
+
+def register_evidence_uniqueness_routes(app, database_service):
+    """
+    Register evidence uniqueness validation routes.
+
+    Args:
+        app: Flask application instance
+        database_service: Service for database operations
+    """
+    evidence_route = EvidenceUniquenessValidationRoute(database_service)
+    app.add_url_rule(
+        '/validate/evidence-uniqueness', 
+        view_func=evidence_route.post, 
+        methods=['POST']
+    )
\ No newline at end of file
diff --git a/feature-builder/builder-task/orca-agent/tests/test_evidence_uniqueness.py b/feature-builder/builder-task/orca-agent/tests/test_evidence_uniqueness.py
new file mode 100644
index 00000000..7c569293
--- /dev/null
+++ b/feature-builder/builder-task/orca-agent/tests/test_evidence_uniqueness.py
@@ -0,0 +1,107 @@
+"""
+Test suite for evidence uniqueness validation.
+"""
+
+import pytest
+from unittest.mock import Mock, patch
+from flask import Flask
+from flask.testing import FlaskClient
+
+from src.server.routes.evidence_uniqueness import register_evidence_uniqueness_routes
+
+@pytest.fixture
+def app():
+    """
+    Create a Flask test app with evidence uniqueness routes.
+    """
+    test_app = Flask(__name__)
+    mock_database_service = Mock()
+    register_evidence_uniqueness_routes(test_app, mock_database_service)
+    return test_app
+
+@pytest.fixture
+def client(app):
+    """
+    Create a test client for the Flask app.
+    """
+    return app.test_client()
+
+def test_evidence_uniqueness_route_requires_data(client: FlaskClient):
+    """
+    Test that the route requires evidence data.
+    """
+    response = client.post('/validate/evidence-uniqueness')
+    assert response.status_code == 400
+    assert 'No evidence data provided' in response.json['message']
+
+def test_evidence_uniqueness_route_requires_unique_fields(client: FlaskClient):
+    """
+    Test that the route requires unique fields.
+    """
+    response = client.post('/validate/evidence-uniqueness', json={})
+    assert response.status_code == 400
+    assert 'No unique fields specified' in response.json['message']
+
+def test_evidence_uniqueness_validation_unique_evidence(client: FlaskClient):
+    """
+    Test successful uniqueness validation.
+    """
+    # Use patch to mock the database service
+    with patch('src.server.routes.evidence_uniqueness.EvidenceUniquenessValidationRoute._check_evidence_uniqueness') as mock_check:
+        mock_check.return_value = {
+            'is_unique': True,
+            'duplicate_fields': {}
+        }
+        
+        response = client.post('/validate/evidence-uniqueness', json={
+            'unique_fields': {
+                'id': 'unique_evidence_123',
+                'hash': 'abc123'
+            }
+        })
+        
+        assert response.status_code == 200
+        assert response.json['status'] == 'success'
+        assert 'Evidence is unique' in response.json['message']
+
+def test_evidence_uniqueness_validation_duplicate_evidence(client: FlaskClient):
+    """
+    Test uniqueness validation with duplicate evidence.
+    """
+    # Use patch to mock the database service
+    with patch('src.server.routes.evidence_uniqueness.EvidenceUniquenessValidationRoute._check_evidence_uniqueness') as mock_check:
+        mock_check.return_value = {
+            'is_unique': False,
+            'duplicate_fields': {
+                'id': 'duplicate_evidence_123'
+            }
+        }
+        
+        response = client.post('/validate/evidence-uniqueness', json={
+            'unique_fields': {
+                'id': 'duplicate_evidence_123'
+            }
+        })
+        
+        assert response.status_code == 409
+        assert response.json['status'] == 'error'
+        assert 'Evidence is not unique' in response.json['message']
+        assert 'duplicate_fields' in response.json
+
+def test_evidence_uniqueness_validation_handles_exceptions(client: FlaskClient):
+    """
+    Test that the route handles exceptions gracefully.
+    """
+    # Use patch to make the database service raise an exception
+    with patch('src.server.routes.evidence_uniqueness.EvidenceUniquenessValidationRoute._check_evidence_uniqueness') as mock_check:
+        mock_check.side_effect = Exception("Database error")
+        
+        response = client.post('/validate/evidence-uniqueness', json={
+            'unique_fields': {
+                'id': 'test_evidence'
+            }
+        })
+        
+        assert response.status_code == 500
+        assert response.json['status'] == 'error'
+        assert 'Uniqueness validation failed' in response.json['message']
\ No newline at end of file