diff --git a/coding-agent/src/agentkit/__init__.py b/coding-agent/src/agentkit/__init__.py
index 7f6e6e2cb..e428cd997 100644
--- a/coding-agent/src/agentkit/__init__.py
+++ b/coding-agent/src/agentkit/__init__.py
@@ -5,7 +5,8 @@
     Plugin, PluginRegistry — Plugin system
     Directive, Approve, Reject, AskUser, Checkpoint, MemoryRecord — Effect descriptions
     Entry, Tape, ForkTapeStore — Conversation history
-    TapeStore, DocIndex, SessionStore — Storage protocols
+    TapeStore, DocIndex, SessionStore, ArtifactStore — Storage protocols
+    TurnResult, SessionResult, ArtifactRef — Result models
     ToolSchema, ToolRegistry, tool — Tool system
     Channel, LocalChannel — Communication
     AgentConfig, load_config — Configuration
@@ -48,7 +49,19 @@
 )
 from agentkit.runtime import HookRuntime, Lifecycle, Pipeline, PipelineContext
 from agentkit.checkpoint import CheckpointMeta, CheckpointService, CheckpointSnapshot
+from agentkit.result import (
+    ArtifactRef,
+    FailureSummary,
+    ResultRef,
+    SessionResult,
+    TurnResult,
+    VerificationSummary,
+    latest_turn_result,
+    result_from_turn_trace,
+    verification_summary_from_turn_trace,
+)
 from agentkit.storage import (
+    ArtifactStore,
     CheckpointStore,
     DocIndex,
     FSCheckpointStore,
@@ -84,10 +97,21 @@
     "CheckpointSnapshot",
     # Storage
     "CheckpointStore",
+    "ArtifactStore",
     "TapeStore",
     "DocIndex",
     "FSCheckpointStore",
     "SessionStore",
+    # Results
+    "ArtifactRef",
+    "FailureSummary",
+    "ResultRef",
+    "SessionResult",
+    "TurnResult",
+    "VerificationSummary",
+    "latest_turn_result",
+    "result_from_turn_trace",
+    "verification_summary_from_turn_trace",
     # Tools
     "ToolSchema",
     "ToolRegistry",
diff --git a/coding-agent/src/agentkit/storage/__init__.py b/coding-agent/src/agentkit/storage/__init__.py
index fa9351d14..b18282c52 100644
--- a/coding-agent/src/agentkit/storage/__init__.py
+++ b/coding-agent/src/agentkit/storage/__init__.py
@@ -1,5 +1,6 @@
 from agentkit.storage.checkpoint_fs import FSCheckpointStore
 from agentkit.storage.protocols import (
+    ArtifactStore,
     CheckpointStore,
     DocIndex,
     SessionStore,
@@ -9,6 +10,7 @@
 
 __all__ = [
     "CheckpointStore",
+    "ArtifactStore",
     "DocIndex",
     "FileSessionStore",
     "FSCheckpointStore",
diff --git a/coding-agent/tests/agentkit/test_public_exports.py b/coding-agent/tests/agentkit/test_public_exports.py
new file mode 100644
index 000000000..44d341fd5
--- /dev/null
+++ b/coding-agent/tests/agentkit/test_public_exports.py
@@ -0,0 +1,19 @@
+"""Tests for stable agentkit package-level exports."""
+
+import agentkit
+from agentkit.storage import ArtifactStore
+
+
+def test_agentkit_exports_result_models_and_reducers() -> None:
+    assert agentkit.ArtifactRef.__name__ == "ArtifactRef"
+    assert agentkit.ResultRef.__name__ == "ResultRef"
+    assert agentkit.TurnResult.__name__ == "TurnResult"
+    assert agentkit.SessionResult.__name__ == "SessionResult"
+    assert agentkit.VerificationSummary.__name__ == "VerificationSummary"
+    assert agentkit.FailureSummary.__name__ == "FailureSummary"
+    assert callable(agentkit.result_from_turn_trace)
+    assert callable(agentkit.verification_summary_from_turn_trace)
+
+
+def test_agentkit_storage_exports_artifact_store_protocol() -> None:
+    assert ArtifactStore.__name__ == "ArtifactStore"