diff --git a/app/main.py b/app/main.py
index 64cbfc2..a5a1272 100644
--- a/app/main.py
+++ b/app/main.py
@@ -49,6 +49,7 @@ from .routers_v2 import (
     stratplays,
     scout_opportunities,
     scout_claims,
+    evolution,
 )
 
 app = FastAPI(
@@ -92,6 +93,7 @@ app.include_router(stratplays.router)
 app.include_router(decisions.router)
 app.include_router(scout_opportunities.router)
 app.include_router(scout_claims.router)
+app.include_router(evolution.router)
 
 
 @app.middleware("http")
diff --git a/app/routers_v2/evolution.py b/app/routers_v2/evolution.py
new file mode 100644
index 0000000..f7d9b86
--- /dev/null
+++ b/app/routers_v2/evolution.py
@@ -0,0 +1,43 @@
+from fastapi import APIRouter, Depends, HTTPException, Query
+import logging
+from typing import Optional
+
+from ..db_engine import model_to_dict
+from ..dependencies import oauth2_scheme, valid_token
+
+router = APIRouter(prefix="/api/v2/evolution", tags=["evolution"])
+
+
+@router.get("/tracks")
+async def list_tracks(
+    card_type: Optional[str] = Query(default=None),
+    token: str = Depends(oauth2_scheme),
+):
+    if not valid_token(token):
+        logging.warning("Bad Token: [REDACTED]")
+        raise HTTPException(status_code=401, detail="Unauthorized")
+
+    from ..db_engine import EvolutionTrack
+
+    query = EvolutionTrack.select()
+    if card_type is not None:
+        query = query.where(EvolutionTrack.card_type == card_type)
+
+    items = [model_to_dict(t, recurse=False) for t in query]
+    return {"count": len(items), "items": items}
+
+
+@router.get("/tracks/{track_id}")
+async def get_track(track_id: int, token: str = Depends(oauth2_scheme)):
+    if not valid_token(token):
+        logging.warning("Bad Token: [REDACTED]")
+        raise HTTPException(status_code=401, detail="Unauthorized")
+
+    from ..db_engine import EvolutionTrack
+
+    try:
+        track = EvolutionTrack.get_by_id(track_id)
+    except Exception:
+        raise HTTPException(status_code=404, detail=f"Track {track_id} not found")
+
+    return model_to_dict(track, recurse=False)
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..b1c8d25
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,5 @@
+[tool.ruff]
+[tool.ruff.lint]
+# db_engine.py uses `from peewee import *` throughout — a pre-existing
+# codebase pattern. Suppress wildcard-import warnings for that file only.
+per-file-ignores = { "app/db_engine.py" = ["F401", "F403", "F405"], "app/main.py" = ["E402", "F541"] }
diff --git a/tests/test_evolution_track_api.py b/tests/test_evolution_track_api.py
new file mode 100644
index 0000000..2545db3
--- /dev/null
+++ b/tests/test_evolution_track_api.py
@@ -0,0 +1,132 @@
+"""Integration tests for the evolution track catalog API endpoints (WP-06).
+
+Tests cover:
+  GET /api/v2/evolution/tracks
+  GET /api/v2/evolution/tracks/{track_id}
+
+All tests require a live PostgreSQL connection (POSTGRES_HOST env var) and
+assume the evolution schema migration (WP-04) has already been applied.
+Tests auto-skip when POSTGRES_HOST is not set.
+
+Test data is inserted via psycopg2 before the test module runs and deleted
+afterwards so the tests are repeatable.  ON CONFLICT keeps the table clean
+even if a previous run did not complete teardown.
+"""
+
+import os
+
+import pytest
+from fastapi.testclient import TestClient
+
+POSTGRES_HOST = os.environ.get("POSTGRES_HOST")
+_skip_no_pg = pytest.mark.skipif(
+    not POSTGRES_HOST, reason="POSTGRES_HOST not set — integration tests skipped"
+)
+
+AUTH_HEADER = {"Authorization": f"Bearer {os.environ.get('API_TOKEN', 'test-token')}"}
+
+_SEED_TRACKS = [
+    ("Batter", "batter", "pa+tb*2", 37, 149, 448, 896),
+    ("Starting Pitcher", "sp", "ip+k", 10, 40, 120, 240),
+    ("Relief Pitcher", "rp", "ip+k", 3, 12, 35, 70),
+]
+
+
+@pytest.fixture(scope="module")
+def seeded_tracks(pg_conn):
+    """Insert three canonical evolution tracks; remove them after the module.
+
+    Uses ON CONFLICT DO UPDATE so the fixture is safe to run even if rows
+    already exist from a prior test run that did not clean up.  Returns the
+    list of row IDs that were upserted.
+    """
+    cur = pg_conn.cursor()
+    ids = []
+    for name, card_type, formula, t1, t2, t3, t4 in _SEED_TRACKS:
+        cur.execute(
+            """
+            INSERT INTO evolution_track
+                (name, card_type, formula, t1_threshold, t2_threshold, t3_threshold, t4_threshold)
+            VALUES (%s, %s, %s, %s, %s, %s, %s)
+            ON CONFLICT (card_type) DO UPDATE SET
+                name = EXCLUDED.name,
+                formula = EXCLUDED.formula,
+                t1_threshold = EXCLUDED.t1_threshold,
+                t2_threshold = EXCLUDED.t2_threshold,
+                t3_threshold = EXCLUDED.t3_threshold,
+                t4_threshold = EXCLUDED.t4_threshold
+            RETURNING id
+            """,
+            (name, card_type, formula, t1, t2, t3, t4),
+        )
+        ids.append(cur.fetchone()[0])
+    pg_conn.commit()
+    yield ids
+    cur.execute("DELETE FROM evolution_track WHERE id = ANY(%s)", (ids,))
+    pg_conn.commit()
+
+
+@pytest.fixture(scope="module")
+def client():
+    """FastAPI TestClient backed by the real PostgreSQL database."""
+    from app.main import app
+
+    with TestClient(app) as c:
+        yield c
+
+
+@_skip_no_pg
+def test_list_tracks_returns_count_3(client, seeded_tracks):
+    """GET /tracks returns all three tracks with count=3.
+
+    After seeding batter/sp/rp, the table should have exactly those three
+    rows (no other tracks are inserted by other test modules).
+    """
+    resp = client.get("/api/v2/evolution/tracks", headers=AUTH_HEADER)
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["count"] == 3
+    assert len(data["items"]) == 3
+
+
+@_skip_no_pg
+def test_filter_by_card_type(client, seeded_tracks):
+    """card_type=sp filter returns exactly 1 track with card_type 'sp'."""
+    resp = client.get("/api/v2/evolution/tracks?card_type=sp", headers=AUTH_HEADER)
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["count"] == 1
+    assert data["items"][0]["card_type"] == "sp"
+
+
+@_skip_no_pg
+def test_get_single_track_with_thresholds(client, seeded_tracks):
+    """GET /tracks/{id} returns a track dict with formula and t1-t4 thresholds."""
+    track_id = seeded_tracks[0]  # batter
+    resp = client.get(f"/api/v2/evolution/tracks/{track_id}", headers=AUTH_HEADER)
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["card_type"] == "batter"
+    assert data["formula"] == "pa+tb*2"
+    for key in ("t1_threshold", "t2_threshold", "t3_threshold", "t4_threshold"):
+        assert key in data, f"Missing field: {key}"
+    assert data["t1_threshold"] == 37
+    assert data["t4_threshold"] == 896
+
+
+@_skip_no_pg
+def test_404_for_nonexistent_track(client, seeded_tracks):
+    """GET /tracks/999999 returns 404 when the track does not exist."""
+    resp = client.get("/api/v2/evolution/tracks/999999", headers=AUTH_HEADER)
+    assert resp.status_code == 404
+
+
+@_skip_no_pg
+def test_auth_required(client, seeded_tracks):
+    """Requests without a Bearer token return 401 for both endpoints."""
+    resp_list = client.get("/api/v2/evolution/tracks")
+    assert resp_list.status_code == 401
+
+    track_id = seeded_tracks[0]
+    resp_single = client.get(f"/api/v2/evolution/tracks/{track_id}")
+    assert resp_single.status_code == 401