diff --git a/.claude/settings.json b/.claude/settings.json
new file mode 100644
index 000000000..647162e29
--- /dev/null
+++ b/.claude/settings.json
@@ -0,0 +1,10 @@
+{
+  "plugins": {
+    "marketplaces": [
+      "PolicyEngine/policyengine-claude"
+    ],
+    "auto_install": [
+      "country-models@policyengine-claude"
+    ]
+  }
+}
diff --git a/changelog_entry.yaml b/changelog_entry.yaml
index e69de29bb..b46584867 100644
--- a/changelog_entry.yaml
+++ b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: minor
+  changes:
+    changed:
+      - Added policyengine-claude plugin auto-install configuration.
diff --git a/policyengine_api/data/congressional_districts.py b/policyengine_api/data/congressional_districts.py
index 7aa54ab8c..8c52c4e64 100644
--- a/policyengine_api/data/congressional_districts.py
+++ b/policyengine_api/data/congressional_districts.py
@@ -11,7 +11,6 @@
 
 from pydantic import BaseModel, Field
 
-
 # Mapping of state codes to full state names
 STATE_CODE_TO_NAME = {
     "AL": "Alabama",
diff --git a/policyengine_api/libs/simulation_api.py b/policyengine_api/libs/simulation_api.py
index 1fbd12b48..3d4554de9 100644
--- a/policyengine_api/libs/simulation_api.py
+++ b/policyengine_api/libs/simulation_api.py
@@ -8,7 +8,6 @@
 from policyengine_api.gcp_logging import logger
 from google.cloud.workflows import executions_v1
 
-
 load_dotenv()
 
 ExecutionState = executions_v1.types.Execution.State
diff --git a/policyengine_api/routes/ai_prompt_routes.py b/policyengine_api/routes/ai_prompt_routes.py
index c377c51b5..a15bd16dd 100644
--- a/policyengine_api/routes/ai_prompt_routes.py
+++ b/policyengine_api/routes/ai_prompt_routes.py
@@ -8,7 +8,6 @@
 from werkzeug.exceptions import NotFound, BadRequest
 import json
 
-
 ai_prompt_bp = Blueprint("ai_prompt", __name__)
 ai_prompt_service = AIPromptService()
 
diff --git a/policyengine_api/routes/household_routes.py b/policyengine_api/routes/household_routes.py
index 893d6defd..0961d8cd3 100644
--- a/policyengine_api/routes/household_routes.py
+++ b/policyengine_api/routes/household_routes.py
@@ -8,7 +8,6 @@
     validate_country,
 )
 
-
 household_bp = Blueprint("household", __name__)
 household_service = HouseholdService()
 
diff --git a/policyengine_api/routes/report_output_routes.py b/policyengine_api/routes/report_output_routes.py
index 4dfb9218a..b2c5502d1 100644
--- a/policyengine_api/routes/report_output_routes.py
+++ b/policyengine_api/routes/report_output_routes.py
@@ -6,7 +6,6 @@
 from policyengine_api.constants import CURRENT_YEAR
 from policyengine_api.utils.payload_validators import validate_country
 
-
 report_output_bp = Blueprint("report_output", __name__)
 report_output_service = ReportOutputService()
 
diff --git a/policyengine_api/routes/simulation_routes.py b/policyengine_api/routes/simulation_routes.py
index c1210d97d..86e6f0ddf 100644
--- a/policyengine_api/routes/simulation_routes.py
+++ b/policyengine_api/routes/simulation_routes.py
@@ -6,7 +6,6 @@
 from policyengine_api.utils.payload_validators import validate_country
 from policyengine_api.constants import COUNTRY_PACKAGE_VERSIONS
 
-
 simulation_bp = Blueprint("simulation", __name__)
 simulation_service = SimulationService()
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 217f37342..f604176cd 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -8,7 +8,6 @@
 import pytest
 from policyengine_api.api import app
 
-
 # Add the project root directory to PYTHONPATH
 root_dir = Path(__file__).parent
 sys.path.append(str(root_dir))
diff --git a/tests/fixtures/libs/simulation_api_modal.py b/tests/fixtures/libs/simulation_api_modal.py
index 216cf5bf1..64ce139e7 100644
--- a/tests/fixtures/libs/simulation_api_modal.py
+++ b/tests/fixtures/libs/simulation_api_modal.py
@@ -16,7 +16,6 @@
     MODAL_EXECUTION_STATUS_FAILED,
 )
 
-
 # Mock data constants
 MOCK_MODAL_JOB_ID = "fc-abc123xyz"
 MOCK_MODAL_BASE_URL = "https://test-modal-api.modal.run"
diff --git a/tests/fixtures/services/household_fixtures.py b/tests/fixtures/services/household_fixtures.py
index f84d99c95..54d49291f 100644
--- a/tests/fixtures/services/household_fixtures.py
+++ b/tests/fixtures/services/household_fixtures.py
@@ -2,7 +2,6 @@
 import json
 from unittest.mock import patch
 
-
 valid_request_body = {
     "data": {"people": {"person1": {"age": 30, "income": 50000}}},
     "label": "Test Household",
diff --git a/tests/fixtures/services/tracer_analysis_service.py b/tests/fixtures/services/tracer_analysis_service.py
index f137c206b..1a1262dc0 100644
--- a/tests/fixtures/services/tracer_analysis_service.py
+++ b/tests/fixtures/services/tracer_analysis_service.py
@@ -5,7 +5,6 @@
 )
 from unittest.mock import patch
 
-
 valid_tracer_output = [
     "        snap<2027, (default)> = [6769.799]",
     "          snap<2027-01, (default)> = [561.117]",
diff --git a/tests/fixtures/services/user_service.py b/tests/fixtures/services/user_service.py
index 2a77d2c9d..1ab78bc80 100644
--- a/tests/fixtures/services/user_service.py
+++ b/tests/fixtures/services/user_service.py
@@ -1,6 +1,5 @@
 import pytest
 
-
 valid_user_record = {
     "user_id": 1,
     "auth0_id": "123",
diff --git a/tests/unit/services/test_tracer_analysis_service.py b/tests/unit/services/test_tracer_analysis_service.py
index 1e87c41a6..eeb08c9b0 100644
--- a/tests/unit/services/test_tracer_analysis_service.py
+++ b/tests/unit/services/test_tracer_analysis_service.py
@@ -7,7 +7,6 @@
 
 from tests.fixtures.services.tracer_analysis_service import *
 
-
 logger = logging.getLogger(__name__)
 test_service = TracerAnalysisService()