diff --git a/decnet/profiler/behave_shell/__init__.py b/decnet/profiler/behave_shell/__init__.py
index d8a2988b..420ced05 100644
--- a/decnet/profiler/behave_shell/__init__.py
+++ b/decnet/profiler/behave_shell/__init__.py
@@ -15,4 +15,11 @@ from decnet.profiler.behave_shell.extract import (
     extract_session,
 )
 
-__all__ = ["DEFAULT_SOURCE", "build_context", "extract_session"]
+# Phase H.5-pre: extractor is feature-complete (37/37 Tier-A primitives
+# emit; calibration grid honest). The ``-pre`` suffix stays until
+# ``BEHAVE-INTEGRATION.md`` Phase 4 lands the worker wiring + observations
+# table writes + AttackerDetail panel; only then does H.5 proper drop the
+# suffix and tag v0.
+__version__ = "0.1.0-pre"
+
+__all__ = ["DEFAULT_SOURCE", "build_context", "extract_session", "__version__"]
diff --git a/tests/profiler/behave_shell/test_version_marker.py b/tests/profiler/behave_shell/test_version_marker.py
new file mode 100644
index 00000000..1c8fe9b8
--- /dev/null
+++ b/tests/profiler/behave_shell/test_version_marker.py
@@ -0,0 +1,26 @@
+"""Step H.5-pre: extractor ``__version__`` marker.
+
+The version marker is the engine's own identifier; it does NOT need
+to track ``decnet-behave-shell`` (the spec library) — they version
+independently. v0 of the spec is already shipped; v0 of the engine
+ships once worker wiring lands.
+"""
+from __future__ import annotations
+
+import re
+
+import decnet.profiler.behave_shell as behave_shell
+
+
+def test_version_marker_present_and_well_formed() -> None:
+    assert hasattr(behave_shell, "__version__"), (
+        "decnet.profiler.behave_shell must export __version__"
+    )
+    assert re.match(r"^0\.1\.0(?:-pre)?$", behave_shell.__version__), (
+        f"unexpected version: {behave_shell.__version__!r}; "
+        "expected 0.1.0 or 0.1.0-pre"
+    )
+
+
+def test_version_in_dunder_all() -> None:
+    assert "__version__" in behave_shell.__all__