diff --git a/tests/test_search_router.py b/tests/test_search_router.py
new file mode 100644
index 0000000..c201f57
--- /dev/null
+++ b/tests/test_search_router.py
@@ -0,0 +1,125 @@
+import pytest
+from fastapi.testclient import TestClient
+from fastapi import FastAPI
+from axon.models import SearchResult
+
+
+def _mock_result(url="https://ex.com", title="T", content="C", score=0.8):
+    return SearchResult(title=title, url=url, content=content, score=score)
+
+
+async def _async(val):
+    return val
+
+
+@pytest.fixture
+def client(monkeypatch):
+    from axon.services.cache import InMemoryCache
+    cache = InMemoryCache()
+
+    async def async_cache():
+        return cache
+
+    monkeypatch.setattr("axon.routers.search.get_cache", async_cache)
+
+    results_5 = [_mock_result(f"https://ex{i}.com", f"T{i}", f"C{i}") for i in range(5)]
+
+    async def fake_brave(*a, **kw):
+        return results_5
+
+    async def fake_ddg(*a, **kw):
+        return []
+
+    async def fake_rerank(q, c):
+        return [(url, text, 0.8) for url, text in c]
+
+    monkeypatch.setattr("axon.routers.search.search_brave", fake_brave)
+    monkeypatch.setattr("axon.routers.search.search_ddg", fake_ddg)
+    monkeypatch.setattr("axon.routers.search.rerank_results", fake_rerank)
+
+    from axon.routers.search import router
+    app = FastAPI()
+    app.include_router(router)
+    return TestClient(app)
+
+
+def test_search_basic_returns_200(client):
+    resp = client.post("/search", json={"query": "test"})
+    assert resp.status_code == 200
+    data = resp.json()
+    assert "results" in data
+    assert "response_time" in data
+    assert data["query"] == "test"
+
+
+def test_search_deduplicates_urls():
+    from axon.routers.search import deduplicate_results
+    r1 = _mock_result("https://x.com")
+    r2 = _mock_result("https://x.com")
+    r3 = _mock_result("https://y.com")
+    deduped = deduplicate_results([r1, r2, r3])
+    assert len(deduped) == 2
+    urls = [r.url for r in deduped]
+    assert urls.count("https://x.com") == 1
+
+
+def test_search_503_if_all_sources_fail(monkeypatch):
+    from axon.services.cache import InMemoryCache
+    cache = InMemoryCache()
+
+    async def async_cache():
+        return cache
+
+    monkeypatch.setattr("axon.routers.search.get_cache", async_cache)
+
+    async def empty(*a, **kw):
+        return []
+
+    monkeypatch.setattr("axon.routers.search.search_brave", empty)
+    monkeypatch.setattr("axon.routers.search.search_ddg", empty)
+    monkeypatch.setattr("axon.routers.search.search_serper", empty)
+
+    from axon.routers.search import router
+    app = FastAPI()
+    app.include_router(router)
+    c = TestClient(app, raise_server_exceptions=False)
+    resp = c.post("/search", json={"query": "test"})
+    assert resp.status_code == 503
+
+
+def test_search_whitelist_filter(monkeypatch):
+    from axon.services.cache import InMemoryCache
+    cache = InMemoryCache()
+
+    async def async_cache():
+        return cache
+
+    monkeypatch.setattr("axon.routers.search.get_cache", async_cache)
+
+    results = [
+        _mock_result("https://allowed.com/page"),
+        _mock_result("https://blocked.com/page"),
+    ]
+
+    async def fake_brave(*a, **kw):
+        return results
+
+    async def fake_ddg(*a, **kw):
+        return []
+
+    async def fake_rerank(q, c):
+        return [(u, t, 0.8) for u, t in c]
+
+    monkeypatch.setattr("axon.routers.search.search_brave", fake_brave)
+    monkeypatch.setattr("axon.routers.search.search_ddg", fake_ddg)
+    monkeypatch.setattr("axon.routers.search.rerank_results", fake_rerank)
+
+    from axon.routers.search import router
+    app = FastAPI()
+    app.include_router(router)
+    c = TestClient(app)
+    resp = c.post("/search", json={"query": "test", "domains_whitelist": ["allowed.com"]})
+    assert resp.status_code == 200
+    urls = [r["url"] for r in resp.json()["results"]]
+    assert all("allowed.com" in u for u in urls)
+    assert len(urls) == 1