diff --git a/tests/core/test_httpy.py b/tests/core/test_httpy.py
new file mode 100644
index 0000000..bf5053a
--- /dev/null
+++ b/tests/core/test_httpy.py
@@ -0,0 +1,36 @@
+# FIXME: Better way than hitting live httpbin?
+import dataclasses
+
+import pytest
+
+from core.httpy import Client  # TODO: Test async client
+
+
+@dataclasses.dataclass
+class MockActor:
+    private_key: str
+    public_key: str
+    public_key_id: str
+
+
+@pytest.fixture
+def signing_actor(keypair):
+    return MockActor(
+        private_key=keypair["private_key"],
+        public_key=keypair["public_key_id"],
+        public_key_id="https://example.com/test-actor",
+    )
+
+
+def test_basics():
+    with Client() as client:
+        resp = client.get("https://httpbin.org/status/200")
+        assert resp.status_code == 200
+
+
+def test_signature(signing_actor):
+    with Client(actor=signing_actor) as client:
+        resp = client.get("https://httpbin.org/headers")
+        resp.raise_for_status()
+        body = resp.json()
+        assert "Signature" in body["headers"]