diff --git a/lotto/app/main.py b/lotto/app/main.py
index f6e9497..0e8c024 100644
--- a/lotto/app/main.py
+++ b/lotto/app/main.py
@@ -47,6 +47,7 @@ from .weight_evolver import (
 from .routers import curator as curator_router
 from .routers import briefing as briefing_router
 from .routers import review as review_router
+from .routers import backtest as backtest_router
 from .jobs.grade_weekly_review import run_for_latest as grade_run_for_latest
 
 app = FastAPI()
@@ -54,6 +55,7 @@ install_access_log(app)
 app.include_router(curator_router.router)
 app.include_router(briefing_router.router)
 app.include_router(review_router.router)
+app.include_router(backtest_router.router)
 scheduler = BackgroundScheduler(timezone=os.getenv("TZ", "Asia/Seoul"))
 
 ALL_URL = os.getenv("LOTTO_ALL_URL", "https://smok95.github.io/lotto/results/all.json")
diff --git a/lotto/app/routers/backtest.py b/lotto/app/routers/backtest.py
new file mode 100644
index 0000000..6206d2f
--- /dev/null
+++ b/lotto/app/routers/backtest.py
@@ -0,0 +1,30 @@
+from fastapi import APIRouter, BackgroundTasks, Query
+from .. import backtest, db
+
+router = APIRouter(prefix="/api/lotto/backtest", tags=["backtest"])
+
+
+@router.get("/track-record")
+def track_record():
+    return backtest.track_record()
+
+
+@router.get("/calibration")
+def calibration(weeks: int = Query(52, ge=1, le=520)):
+    return {"history": db.get_calibration_history(limit=weeks)}
+
+
+@router.get("/review/{draw_no}")
+def review(draw_no: int):
+    return backtest.build_review_payload(draw_no)
+
+
+@router.post("/run-forward")
+def run_forward(draw_no: int = Query(...), k: int = 5000, pool_n: int = 20000):
+    return backtest.run_forward_purchase(draw_no=draw_no, k=k, pool_n=pool_n)
+
+
+@router.post("/backfill")
+def backfill(background_tasks: BackgroundTasks, batch: int = 50, sample_m: int = 2000):
+    background_tasks.add_task(backtest.backfill_calibration, batch, sample_m)
+    return {"ok": True, "message": f"backfill 시작 (batch={batch})"}
diff --git a/lotto/tests/test_backtest_api.py b/lotto/tests/test_backtest_api.py
new file mode 100644
index 0000000..40daf6c
--- /dev/null
+++ b/lotto/tests/test_backtest_api.py
@@ -0,0 +1,23 @@
+import os, sys, tempfile
+
+# _shared lives in web-backend/_shared; add the parent dir so it can be found
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", ".."))
+
+from fastapi.testclient import TestClient
+
+def _client(monkeypatch):
+    tmp = tempfile.mkdtemp()
+    from app import db
+    monkeypatch.setattr(db, "DB_PATH", os.path.join(tmp, "lotto.db"))
+    db.init_db()
+    from app.main import app
+    return TestClient(app), db
+
+def test_backtest_endpoints(monkeypatch):
+    client, db = _client(monkeypatch)
+    r = client.get("/api/lotto/backtest/track-record")
+    assert r.status_code == 200
+    assert "by_strategy" in r.json()
+    r2 = client.get("/api/lotto/backtest/calibration?weeks=4")
+    assert r2.status_code == 200
+    assert isinstance(r2.json().get("history"), list)