diff --git a/pkg/agentic/prep.go b/pkg/agentic/prep.go
index 34bf719..5ee1aed 100644
--- a/pkg/agentic/prep.go
+++ b/pkg/agentic/prep.go
@@ -215,6 +215,7 @@ func (s *PrepSubsystem) OnStartup(ctx context.Context) core.Result {
 	c.Action("session.list", s.handleSessionList).Description = "List sessions with optional plan or status filters"
 	c.Action("session.continue", s.handleSessionContinue).Description = "Continue a session from its latest saved context"
 	c.Action("session.end", s.handleSessionEnd).Description = "End a session with status and summary"
+	c.Action("session.complete", s.handleSessionEnd).Description = "Mark a session completed with status, summary, and handoff notes"
 	c.Action("session.log", s.handleSessionLog).Description = "Append a typed work-log entry to a stored session"
 	c.Action("session.artifact", s.handleSessionArtifact).Description = "Record a created, modified, deleted, or reviewed artifact for a session"
 	c.Action("session.handoff", s.handleSessionHandoff).Description = "Pause a session with handoff notes for the next agent"
diff --git a/pkg/agentic/prep_test.go b/pkg/agentic/prep_test.go
index 69eb545..c0b5213 100644
--- a/pkg/agentic/prep_test.go
+++ b/pkg/agentic/prep_test.go
@@ -501,6 +501,7 @@ func TestPrep_OnStartup_Good_RegistersSessionActions(t *testing.T) {
 	assert.True(t, c.Action("session.list").Exists())
 	assert.True(t, c.Action("session.continue").Exists())
 	assert.True(t, c.Action("session.end").Exists())
+	assert.True(t, c.Action("session.complete").Exists())
 	assert.True(t, c.Action("session.log").Exists())
 	assert.True(t, c.Action("session.artifact").Exists())
 	assert.True(t, c.Action("session.handoff").Exists())
@@ -653,6 +654,7 @@ func TestPrep_RegisterTools_Good_RegistersCompletionTool(t *testing.T) {
 	}
 
 	assert.Contains(t, toolNames, "agentic_complete")
+	assert.Contains(t, toolNames, "session_complete")
 	assert.Contains(t, toolNames, "agentic_message_send")
 	assert.Contains(t, toolNames, "agentic_message_inbox")
 	assert.Contains(t, toolNames, "agentic_message_conversation")
diff --git a/pkg/agentic/session.go b/pkg/agentic/session.go
index 0c5787e..b5afafc 100644
--- a/pkg/agentic/session.go
+++ b/pkg/agentic/session.go
@@ -326,6 +326,11 @@ func (s *PrepSubsystem) registerSessionTools(server *mcp.Server) {
 		Description: "End a session with status, summary, and optional handoff notes.",
 	}, s.sessionEnd)
 
+	mcp.AddTool(server, &mcp.Tool{
+		Name:        "session_complete",
+		Description: "Mark a session completed with status, summary, and optional handoff notes.",
+	}, s.sessionEnd)
+
 	mcp.AddTool(server, &mcp.Tool{
 		Name:        "session_log",
 		Description: "Add a typed work log entry to a stored session.",