Add chat metadata persistence and enhance executor goals injection tests

- Implement TestEnsureChatMetadata to verify that metadata, including robot_id, is correctly persisted in chat records.
- Update EnsureChat method to store metadata from the context when creating chat records.
- Introduce TestExecutorGoalsInjection to validate that pre-confirmed goals are injected into executions from TriggerInput.Data.
- Enhance executor logic to handle goal injection and persistence, ensuring accurate execution titles.
- Modify chat filtering to support chat_id_prefix for improved chat retrieval based on robot identifiers.

agent/assistant/chat.go

@@ -349,6 +349,7 @@ func (ast *Assistant) EnsureChat(ctx *agentcontext.Context) error {
 		Status:      "active",
 		Share:       "private",
 		Sort:        0,
+		Metadata:    ctx.Metadata,
 		CreatedAt:   time.Now(),
 		UpdatedAt:   time.Now(),
 	}

agent/assistant/chat_test.go

@@ -815,6 +815,117 @@ func TestEnsureChat(t *testing.T) {
 	})
 }
 
+// TestEnsureChatMetadata verifies that ctx.Metadata is persisted to the chat record.
+// This is required for Host Agent: robot_id is passed in metadata so that
+// ListChats with chat_id_prefix=robot_{id}_ can filter by robot.
+func TestEnsureChatMetadata(t *testing.T) {
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	ast, err := assistant.Get("mohe")
+	require.NoError(t, err)
+
+	chatStore := assistant.GetChatStore()
+	if chatStore == nil {
+		t.Skip("Chat store not configured, skipping metadata tests")
+	}
+
+	t.Run("MetadataPersisted", func(t *testing.T) {
+		chatID := fmt.Sprintf("robot_test_meta_%s", uuid.New().String()[:8])
+		ctx := agentcontext.New(context.Background(), &oauthtypes.AuthorizedInfo{
+			UserID: "test_user_meta",
+			TeamID: "test_team_meta",
+		}, chatID)
+		ctx.Metadata = map[string]interface{}{
+			"robot_id": "robot_member_001",
+		}
+
+		err := ast.EnsureChat(ctx)
+		require.NoError(t, err)
+
+		chat, err := chatStore.GetChat(chatID)
+		require.NoError(t, err)
+		require.NotNil(t, chat)
+		require.NotNil(t, chat.Metadata, "Metadata should be persisted")
+		assert.Equal(t, "robot_member_001", chat.Metadata["robot_id"],
+			"robot_id should be stored in chat metadata")
+
+		// Cleanup
+		chatStore.DeleteChat(chatID)
+		t.Logf("✓ Chat metadata persisted: robot_id=%v", chat.Metadata["robot_id"])
+	})
+
+	t.Run("MetadataPersistedWithRobotChatIDPrefix", func(t *testing.T) {
+		// Simulate robot host chat_id format: robot_{member_id}_{timestamp}
+		memberID := "120004485525"
+		chatID := fmt.Sprintf("robot_%s_%d", memberID, time.Now().UnixMilli())
+		ctx := agentcontext.New(context.Background(), &oauthtypes.AuthorizedInfo{
+			UserID: "test_user_robot",
+			TeamID: "test_team_robot",
+		}, chatID)
+		ctx.Metadata = map[string]interface{}{
+			"robot_id": memberID,
+		}
+
+		err := ast.EnsureChat(ctx)
+		require.NoError(t, err)
+
+		chat, err := chatStore.GetChat(chatID)
+		require.NoError(t, err)
+		require.NotNil(t, chat)
+		require.NotNil(t, chat.Metadata)
+		assert.Equal(t, memberID, chat.Metadata["robot_id"])
+
+		// Cleanup
+		chatStore.DeleteChat(chatID)
+		t.Logf("✓ Robot-prefix chat persisted with metadata: chat_id=%s", chatID)
+	})
+
+	t.Run("NilMetadataHandled", func(t *testing.T) {
+		chatID := fmt.Sprintf("test_meta_nil_%s", uuid.New().String()[:8])
+		ctx := agentcontext.New(context.Background(), nil, chatID)
+		ctx.Metadata = nil
+
+		err := ast.EnsureChat(ctx)
+		assert.NoError(t, err)
+
+		chat, err := chatStore.GetChat(chatID)
+		require.NoError(t, err)
+		require.NotNil(t, chat)
+		// Metadata nil is acceptable
+		t.Logf("✓ Nil metadata handled gracefully")
+
+		// Cleanup
+		chatStore.DeleteChat(chatID)
+	})
+
+	t.Run("MetadataMultipleFields", func(t *testing.T) {
+		chatID := fmt.Sprintf("test_meta_multi_%s", uuid.New().String()[:8])
+		ctx := agentcontext.New(context.Background(), &oauthtypes.AuthorizedInfo{
+			UserID: "test_user_multi",
+			TeamID: "test_team_multi",
+		}, chatID)
+		ctx.Metadata = map[string]interface{}{
+			"robot_id": "robot_multi_001",
+			"source":   "mission_control",
+		}
+
+		err := ast.EnsureChat(ctx)
+		require.NoError(t, err)
+
+		chat, err := chatStore.GetChat(chatID)
+		require.NoError(t, err)
+		require.NotNil(t, chat)
+		require.NotNil(t, chat.Metadata)
+		assert.Equal(t, "robot_multi_001", chat.Metadata["robot_id"])
+		assert.Equal(t, "mission_control", chat.Metadata["source"])
+
+		// Cleanup
+		chatStore.DeleteChat(chatID)
+		t.Logf("✓ Multiple metadata fields persisted correctly")
+	})
+}
+
 func TestConvertBufferedTypes(t *testing.T) {
 	t.Run("ConvertBufferedMessages", func(t *testing.T) {
 		// Create buffered messages

agent/robot/executor/standard/executor.go

@@ -102,6 +102,14 @@ func (e *Executor) ExecuteWithControl(ctx *robottypes.Context, robot *robottypes
 		}
 	}
 
+	// If goals are pre-confirmed (passed via Input.Data["goals"]), inject them directly.
+	// RunGoals will skip LLM call when exec.Goals is already populated (§18.2).
+	if exec.Goals == nil && input != nil && input.Data != nil {
+		if goalsStr, ok := input.Data["goals"].(string); ok && goalsStr != "" {
+			exec.Goals = &robottypes.Goals{Content: goalsStr}
+		}
+	}
+
 	// Initialize UI display fields (with i18n support)
 	exec.Name, exec.CurrentTaskName = e.initUIFields(trigger, input, robot)
 
@@ -120,6 +128,21 @@ func (e *Executor) ExecuteWithControl(ctx *robottypes.Context, robot *robottypes
 				"error":        err,
 			}).Warn("Failed to persist execution record: %v", err)
 		}
+
+		// If goals were pre-injected, persist them and update the execution title
+		if exec.Goals != nil && exec.Goals.Content != "" {
+			if err := e.store.UpdatePhase(ctx.Context, exec.ID, robottypes.PhaseGoals, exec.Goals); err != nil {
+				log.With(log.F{
+					"execution_id": exec.ID,
+					"member_id":    exec.MemberID,
+					"error":        err,
+				}).Warn("Failed to persist pre-confirmed goals: %v", err)
+			}
+			if goalName := extractGoalName(exec.Goals); goalName != "" {
+				e.updateUIFields(ctx, exec, goalName, "")
+			}
+		}
+
 	}
 
 	// Acquire execution slot

agent/robot/executor/standard/executor_test.go

@@ -117,6 +117,132 @@ func TestExecutorPersistence(t *testing.T) {
 	})
 }
 
+// ============================================================================
+// Goals Injection Tests (Host Agent confirmed goals)
+// ============================================================================
+
+// TestExecutorGoalsInjection verifies that when TriggerHuman is used with
+// pre-confirmed goals (from Host Agent via /v1/agent/robots/:id/execute),
+// the goals are injected directly into exec.Goals before RunGoals runs,
+// and are persisted (title updated) so the task list shows the correct title.
+func TestExecutorGoalsInjection(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping integration test")
+	}
+
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	t.Run("goals_injected_from_trigger_input_data", func(t *testing.T) {
+		ctx := robottypes.NewContext(context.Background(), &oauthTypes.AuthorizedInfo{
+			UserID: "user_goals_inject_001",
+			TeamID: "team_goals_inject_001",
+		})
+
+		robot := createPersistenceTestRobot("member_goals_inject_001", "team_goals_inject_001")
+
+		e := standard.NewWithConfig(types.Config{
+			SkipPersistence: false,
+		})
+
+		// Simulate Host Agent confirmed goals passed via TriggerInput.Data
+		triggerInput := &robottypes.TriggerInput{
+			Data: map[string]interface{}{
+				"goals":   "Create a mecha image with sci-fi style",
+				"chat_id": "robot_member_goals_inject_001_1234567890",
+			},
+		}
+
+		exec, err := e.Execute(ctx, robot, robottypes.TriggerHuman, triggerInput)
+		require.NoError(t, err)
+		require.NotNil(t, exec)
+
+		// Goals should be injected from TriggerInput.Data
+		require.NotNil(t, exec.Goals, "Goals should be injected from TriggerInput.Data")
+		assert.Equal(t, "Create a mecha image with sci-fi style", exec.Goals.Content,
+			"Goals content should match the pre-confirmed goals")
+
+		// Verify goals were persisted to the store
+		s := store.NewExecutionStore()
+		record, err := s.Get(context.Background(), exec.ID)
+		require.NoError(t, err)
+		require.NotNil(t, record)
+
+		// Execution name should reflect the goals (not "Preparing...")
+		assert.NotEmpty(t, exec.Name, "Execution name should be set from goals")
+		assert.NotEqual(t, "Preparing...", exec.Name, "Name should not be the default placeholder")
+
+		// Cleanup
+		_ = s.Delete(context.Background(), exec.ID)
+		t.Logf("✓ Goals injected from TriggerInput.Data: goals=%q, name=%q",
+			exec.Goals.Content, exec.Name)
+	})
+
+	t.Run("empty_goals_falls_through_to_goals_agent", func(t *testing.T) {
+		// When TriggerInput.Data["goals"] is an empty string, the executor
+		// does NOT inject pre-confirmed goals and falls through to RunGoals.
+		// RunGoals will call the Goals Agent (LLM), which may succeed or fail
+		// depending on the environment. We only verify that the executor returns
+		// without a panic and that no pre-confirmed goals were force-injected.
+		//
+		// This test requires a running AI environment; skip in short mode.
+		if testing.Short() {
+			t.Skip("Skipping: requires LLM for RunGoals fallback")
+		}
+
+		ctx := robottypes.NewContext(context.Background(), &oauthTypes.AuthorizedInfo{
+			UserID: "user_goals_empty_002",
+			TeamID: "team_goals_empty_002",
+		})
+
+		robot := createPersistenceTestRobot("member_goals_empty_002", "team_goals_empty_002")
+
+		e := standard.NewWithConfig(types.Config{
+			SkipPersistence: true,
+		})
+
+		triggerInput := &robottypes.TriggerInput{
+			Data: map[string]interface{}{
+				"goals": "", // empty — should not be injected as pre-confirmed
+			},
+		}
+
+		exec, err := e.Execute(ctx, robot, robottypes.TriggerHuman, triggerInput)
+		require.NoError(t, err)
+		require.NotNil(t, exec)
+
+		// If Goals was set, it came from the Goals Agent, NOT from the empty string injection.
+		// Either nil (agent skipped) or non-nil (agent ran) is acceptable.
+		if exec.Goals != nil {
+			assert.NotEmpty(t, exec.Goals.Content,
+				"If Goals Agent ran, content should be non-empty")
+		}
+		t.Logf("✓ Empty goals falls through to Goals Agent (goals=%v)", exec.Goals != nil)
+	})
+
+	t.Run("no_trigger_input_uses_normal_flow", func(t *testing.T) {
+		ctx := robottypes.NewContext(context.Background(), &oauthTypes.AuthorizedInfo{
+			UserID: "user_goals_normal_001",
+			TeamID: "team_goals_normal_001",
+		})
+
+		robot := createPersistenceTestRobot("member_goals_normal_001", "team_goals_normal_001")
+
+		e := standard.NewWithConfig(types.Config{
+			SkipPersistence: true,
+		})
+
+		// No TriggerInput — simulate plain string fallback (old API usage)
+		exec, err := e.Execute(ctx, robot, robottypes.TriggerHuman, "simulate_failure")
+		require.NoError(t, err)
+		require.NotNil(t, exec)
+
+		// Goals nil is expected — RunGoals would normally call the LLM
+		assert.Nil(t, exec.Goals, "Without pre-confirmed goals, Goals should remain nil")
+		t.Logf("✓ Normal flow (no pre-confirmed goals) proceeds without injection")
+	})
+}
+
 // ============================================================================
 // Helper Functions
 // ============================================================================

agent/robot/executor/types/helpers.go

@@ -30,6 +30,7 @@ func BuildTriggerInput(trigger robottypes.TriggerType, data interface{}) *robott
 			input.EventType = req.EventType
 			input.Data = req.Data
 		}
+
 	}
 
 	return input

agent/robot/process.go

@@ -0,0 +1,161 @@
+package robot
+
+import (
+	"context"
+
+	"github.com/yaoapp/gou/process"
+	"github.com/yaoapp/kun/exception"
+	"github.com/yaoapp/yao/agent/assistant"
+	"github.com/yaoapp/yao/agent/robot/api"
+	"github.com/yaoapp/yao/agent/robot/types"
+)
+
+func init() {
+	process.RegisterGroup("robot", map[string]process.Handler{
+		"get":             processGet,
+		"list":            processList,
+		"status":          processStatus,
+		"executions":      processExecutions,
+		"execution":       processExecution,
+		"updateChatTitle": processUpdateChatTitle,
+	})
+}
+
+// processGet handles robot.Get(memberID).
+// args[0]: memberID string
+func processGet(p *process.Process) interface{} {
+	p.ValidateArgNums(1)
+	memberID := p.ArgsString(0)
+	ctx := types.NewContext(context.Background(), nil)
+	result, err := api.GetRobotResponse(ctx, memberID)
+	if err != nil {
+		exception.New(err.Error(), 500).Throw()
+	}
+	return result
+}
+
+// processList handles robot.List(filter?).
+// args[0]: optional filter map with page, pagesize, status, search (keywords)
+func processList(p *process.Process) interface{} {
+	p.ValidateArgNums(0)
+	ctx := types.NewContext(context.Background(), nil)
+	filter := &api.ListQuery{}
+	if p.NumOfArgs() > 0 {
+		raw := p.ArgsMap(0)
+		if v, ok := raw["page"]; ok {
+			filter.Page = toInt(v)
+		}
+		if v, ok := raw["pagesize"]; ok {
+			filter.PageSize = toInt(v)
+		}
+		if v, ok := raw["status"]; ok {
+			filter.Status = types.RobotStatus(toString(v))
+		}
+		if v, ok := raw["search"]; ok {
+			filter.Keywords = toString(v)
+		}
+		if v, ok := raw["team_id"]; ok {
+			filter.TeamID = toString(v)
+		}
+	}
+	result, err := api.ListRobots(ctx, filter)
+	if err != nil {
+		exception.New(err.Error(), 500).Throw()
+	}
+	return result
+}
+
+// processStatus handles robot.Status(memberID).
+// args[0]: memberID string
+func processStatus(p *process.Process) interface{} {
+	p.ValidateArgNums(1)
+	memberID := p.ArgsString(0)
+	ctx := types.NewContext(context.Background(), nil)
+	result, err := api.GetRobotStatus(ctx, memberID)
+	if err != nil {
+		exception.New(err.Error(), 500).Throw()
+	}
+	return result
+}
+
+// processExecutions handles robot.Executions(memberID, filter?).
+// args[0]: memberID string; args[1]: optional filter map
+func processExecutions(p *process.Process) interface{} {
+	p.ValidateArgNums(1)
+	memberID := p.ArgsString(0)
+	ctx := types.NewContext(context.Background(), nil)
+	filter := &api.ExecutionQuery{}
+	if p.NumOfArgs() > 1 {
+		raw := p.ArgsMap(1)
+		if v, ok := raw["page"]; ok {
+			filter.Page = toInt(v)
+		}
+		if v, ok := raw["pagesize"]; ok {
+			filter.PageSize = toInt(v)
+		}
+		if v, ok := raw["status"]; ok {
+			filter.Status = types.ExecStatus(toString(v))
+		}
+		if v, ok := raw["trigger"]; ok {
+			filter.Trigger = types.TriggerType(toString(v))
+		}
+	}
+	result, err := api.ListExecutions(ctx, memberID, filter)
+	if err != nil {
+		exception.New(err.Error(), 500).Throw()
+	}
+	return result
+}
+
+// processExecution handles robot.Execution(memberID, executionID).
+// args[0]: memberID string; args[1]: executionID string
+func processExecution(p *process.Process) interface{} {
+	p.ValidateArgNums(2)
+	memberID := p.ArgsString(0)
+	executionID := p.ArgsString(1)
+	ctx := types.NewContext(context.Background(), nil)
+	result, err := api.GetExecutionStatus(ctx, executionID)
+	if err != nil {
+		exception.New(err.Error(), 500).Throw()
+	}
+	_ = memberID // reserved for future permission scoping
+	return result
+}
+
+// processUpdateChatTitle handles robot.UpdateChatTitle(chatID, title).
+// args[0]: chatID string; args[1]: title string
+func processUpdateChatTitle(p *process.Process) interface{} {
+	p.ValidateArgNums(2)
+	chatID := p.ArgsString(0)
+	title := p.ArgsString(1)
+
+	chatStore := assistant.GetChatStore()
+	if chatStore == nil {
+		exception.New("chat store not available", 500).Throw()
+	}
+
+	if err := chatStore.UpdateChat(chatID, map[string]interface{}{"title": title}); err != nil {
+		exception.New(err.Error(), 500).Throw()
+	}
+	return nil
+}
+
+func toInt(v interface{}) int {
+	switch n := v.(type) {
+	case int:
+		return n
+	case int64:
+		return int(n)
+	case float64:
+		return int(n)
+	default:
+		return 0
+	}
+}
+
+func toString(v interface{}) string {
+	if s, ok := v.(string); ok {
+		return s
+	}
+	return ""
+}

agent/robot/process_test.go

@@ -0,0 +1,301 @@
+package robot_test
+
+import (
+	"context"
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/yaoapp/gou/process"
+	"github.com/yaoapp/yao/agent/assistant"
+	storetypes "github.com/yaoapp/yao/agent/store/types"
+	"github.com/yaoapp/yao/agent/testutils"
+
+	// Register robot process handlers via init()
+	_ "github.com/yaoapp/yao/agent/robot"
+)
+
+// ============================================================================
+// robot.UpdateChatTitle
+// ============================================================================
+
+func TestProcessUpdateChatTitle(t *testing.T) {
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	chatStore := assistant.GetChatStore()
+	if chatStore == nil {
+		t.Skip("Chat store not configured, skipping UpdateChatTitle tests")
+	}
+
+	t.Run("UpdatesTitle", func(t *testing.T) {
+		chatID := fmt.Sprintf("robot_test_proc_%s", uuid.New().String()[:8])
+
+		// Create a chat record first
+		err := chatStore.CreateChat(&storetypes.Chat{
+			ChatID:      chatID,
+			AssistantID: "robot.host",
+			Status:      "active",
+			Share:       "private",
+			CreatedAt:   time.Now(),
+			UpdatedAt:   time.Now(),
+		})
+		require.NoError(t, err)
+		defer chatStore.DeleteChat(chatID)
+
+		title := "Create a mecha image, sci-fi style"
+		p := process.New("robot.UpdateChatTitle", chatID, title)
+		_, err = p.Exec()
+		require.NoError(t, err)
+
+		chat, err := chatStore.GetChat(chatID)
+		require.NoError(t, err)
+		assert.Equal(t, title, chat.Title, "Title should be updated to the confirmed goals")
+		t.Logf("✓ robot.UpdateChatTitle: chat_id=%s, title=%q", chatID, chat.Title)
+	})
+
+	t.Run("UpdatesLongGoalsTitle", func(t *testing.T) {
+		chatID := fmt.Sprintf("robot_test_long_%s", uuid.New().String()[:8])
+
+		err := chatStore.CreateChat(&storetypes.Chat{
+			ChatID:      chatID,
+			AssistantID: "robot.host",
+			Status:      "active",
+			Share:       "private",
+			CreatedAt:   time.Now(),
+			UpdatedAt:   time.Now(),
+		})
+		require.NoError(t, err)
+		defer chatStore.DeleteChat(chatID)
+
+		// Long goals string — title field should accommodate it
+		title := "请帮我制作一张充满未来感的机甲图片，风格参考《攻壳机动队》，以赛博朋克城市为背景，色调偏冷，蓝紫配色"
+		p := process.New("robot.UpdateChatTitle", chatID, title)
+		_, err = p.Exec()
+		require.NoError(t, err)
+
+		chat, err := chatStore.GetChat(chatID)
+		require.NoError(t, err)
+		assert.Equal(t, title, chat.Title)
+		t.Logf("✓ Long goals title persisted: %d chars", len(title))
+	})
+
+	t.Run("ErrorOnNonExistentChat", func(t *testing.T) {
+		p := process.New("robot.UpdateChatTitle", "non_existent_chat_id", "some title")
+		_, err := p.Exec()
+		assert.Error(t, err, "Should error when chat does not exist")
+		t.Logf("✓ Non-existent chat correctly returns error")
+	})
+}
+
+// ============================================================================
+// robot.Get
+// ============================================================================
+
+func TestProcessGet(t *testing.T) {
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	t.Run("ErrorOnNotFound", func(t *testing.T) {
+		p := process.New("robot.Get", "non_existent_robot_member_id")
+		_, err := p.Exec()
+		assert.Error(t, err, "Should error for non-existent robot")
+		t.Logf("✓ robot.Get returns error for non-existent robot")
+	})
+}
+
+// ============================================================================
+// robot.List
+// ============================================================================
+
+func TestProcessList(t *testing.T) {
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	t.Run("ReturnsListWithNoFilter", func(t *testing.T) {
+		p := process.New("robot.List")
+		result, err := p.Exec()
+		require.NoError(t, err)
+		// Result is a paginated list — just assert it's not nil
+		assert.NotNil(t, result)
+		t.Logf("✓ robot.List returned: %T", result)
+	})
+
+	t.Run("ReturnsListWithPageFilter", func(t *testing.T) {
+		p := process.New("robot.List", map[string]interface{}{
+			"page":     1,
+			"pagesize": 5,
+		})
+		result, err := p.Exec()
+		require.NoError(t, err)
+		assert.NotNil(t, result)
+		t.Logf("✓ robot.List with page filter returned: %T", result)
+	})
+}
+
+// ============================================================================
+// robot.Status
+// ============================================================================
+
+func TestProcessStatus(t *testing.T) {
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	t.Run("ErrorOnNotFound", func(t *testing.T) {
+		p := process.New("robot.Status", "non_existent_robot_member_id")
+		_, err := p.Exec()
+		assert.Error(t, err, "Should error for non-existent robot")
+		t.Logf("✓ robot.Status returns error for non-existent robot")
+	})
+}
+
+// ============================================================================
+// robot.Executions
+// ============================================================================
+
+func TestProcessExecutions(t *testing.T) {
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	t.Run("ReturnsEmptyForUnknownRobot", func(t *testing.T) {
+		memberID := fmt.Sprintf("proc_exec_test_%d", time.Now().UnixNano())
+		p := process.New("robot.Executions", memberID)
+		result, err := p.Exec()
+		// May error or return empty — both acceptable
+		if err == nil {
+			assert.NotNil(t, result)
+		}
+		t.Logf("✓ robot.Executions handled for unknown robot")
+	})
+
+	t.Run("AcceptsFilterMap", func(t *testing.T) {
+		memberID := fmt.Sprintf("proc_exec_filter_%d", time.Now().UnixNano())
+		p := process.New("robot.Executions", memberID, map[string]interface{}{
+			"page":     1,
+			"pagesize": 10,
+			"status":   "completed",
+		})
+		result, err := p.Exec()
+		if err == nil {
+			assert.NotNil(t, result)
+		}
+		t.Logf("✓ robot.Executions with filter handled")
+	})
+}
+
+// ============================================================================
+// robot.Execution
+// ============================================================================
+
+func TestProcessExecution(t *testing.T) {
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	t.Run("ErrorOnNonExistentExecution", func(t *testing.T) {
+		p := process.New("robot.Execution", "some_member_id", "non_existent_exec_id")
+		_, err := p.Exec()
+		assert.Error(t, err, "Should error for non-existent execution")
+		t.Logf("✓ robot.Execution returns error for non-existent execution")
+	})
+}
+
+// ============================================================================
+// Argument Validation
+// ============================================================================
+
+func TestProcessArgumentValidation(t *testing.T) {
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	t.Run("UpdateChatTitle_RequiresTwoArgs", func(t *testing.T) {
+		// Missing title argument
+		p := process.New("robot.UpdateChatTitle", "some_chat_id")
+		_, err := p.Exec()
+		assert.Error(t, err, "Should require 2 arguments")
+	})
+
+	t.Run("Get_RequiresOneArg", func(t *testing.T) {
+		p := process.New("robot.Get")
+		_, err := p.Exec()
+		assert.Error(t, err, "Should require 1 argument")
+	})
+
+	t.Run("Status_RequiresOneArg", func(t *testing.T) {
+		p := process.New("robot.Status")
+		_, err := p.Exec()
+		assert.Error(t, err, "Should require 1 argument")
+	})
+
+	t.Run("Execution_RequiresTwoArgs", func(t *testing.T) {
+		p := process.New("robot.Execution", "only_one_arg")
+		_, err := p.Exec()
+		assert.Error(t, err, "Should require 2 arguments")
+	})
+}
+
+// ============================================================================
+// Integration: UpdateChatTitle flow (simulate Host Agent Next Hook)
+// ============================================================================
+
+func TestProcessUpdateChatTitleIntegration(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping integration test")
+	}
+
+	testutils.Prepare(t)
+	defer testutils.Clean(t)
+
+	chatStore := assistant.GetChatStore()
+	if chatStore == nil {
+		t.Skip("Chat store not configured")
+	}
+
+	t.Run("SimulatesHostAgentNextHook", func(t *testing.T) {
+		// Simulate the full flow:
+		// 1. ChatDrawer creates a chat with robot_id in metadata
+		// 2. Host Agent Next Hook calls robot.UpdateChatTitle with confirmed goals
+		// 3. History dropdown shows the goals as the chat title
+
+		memberID := "120004485525"
+		chatID := fmt.Sprintf("robot_%s_%d", memberID, time.Now().UnixMilli())
+		confirmedGoals := "制作一张机甲图片，风格和设计由AI自主决定"
+
+		// Step 1: Create chat (simulating AssignTaskDrawer)
+		err := chatStore.CreateChat(&storetypes.Chat{
+			ChatID:      chatID,
+			AssistantID: "yao.robot-host",
+			Status:      "active",
+			Share:       "private",
+			Metadata: map[string]interface{}{
+				"robot_id": memberID,
+			},
+			CreatedAt: time.Now(),
+			UpdatedAt: time.Now(),
+		})
+		require.NoError(t, err)
+		defer chatStore.DeleteChat(chatID)
+
+		// Step 2: Next Hook calls robot.UpdateChatTitle
+		p := process.New("robot.UpdateChatTitle", chatID, confirmedGoals)
+		_, err = p.Exec()
+		require.NoError(t, err)
+
+		// Step 3: Verify title is set (history dropdown will display this)
+		chat, err := chatStore.GetChat(chatID)
+		require.NoError(t, err)
+		assert.Equal(t, confirmedGoals, chat.Title,
+			"History dropdown should show confirmed goals as title")
+		require.NotNil(t, chat.Metadata)
+		assert.Equal(t, memberID, chat.Metadata["robot_id"],
+			"Metadata robot_id should be preserved after title update")
+
+		t.Logf("✓ Full Host Agent flow: chat_id=%s, title=%q, robot_id=%v",
+			chatID, chat.Title, chat.Metadata["robot_id"])
+	})
+}
+
+// ensure context is used (avoid unused import)
+var _ = context.Background

agent/store/types/types.go

@@ -50,11 +50,12 @@ type Chat struct {
 
 // ChatFilter for listing chats
 type ChatFilter struct {
-	UserID      string `json:"user_id,omitempty"`
-	TeamID      string `json:"team_id,omitempty"`
-	AssistantID string `json:"assistant_id,omitempty"`
-	Status      string `json:"status,omitempty"`
-	Keywords    string `json:"keywords,omitempty"`
+	UserID       string `json:"user_id,omitempty"`
+	TeamID       string `json:"team_id,omitempty"`
+	AssistantID  string `json:"assistant_id,omitempty"`
+	Status       string `json:"status,omitempty"`
+	Keywords     string `json:"keywords,omitempty"`
+	ChatIDPrefix string `json:"chat_id_prefix,omitempty"`
 
 	// Time range filter
 	StartTime *time.Time `json:"start_time,omitempty"` // Filter chats after this time

agent/store/xun/chat.go

@@ -262,6 +262,9 @@ func (store *Xun) ListChats(filter types.ChatFilter) (*types.ChatList, error) {
 	if filter.Keywords != "" {
 		qb.Where("title", "like", fmt.Sprintf("%%%s%%", filter.Keywords))
 	}
+	if filter.ChatIDPrefix != "" {
+		qb.Where("chat_id", "like", filter.ChatIDPrefix+"%")
+	}
 
 	// Apply time range filter
 	if filter.StartTime != nil {

openapi/agent/robot/completions.go

@@ -0,0 +1,124 @@
+package robot
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/gin-gonic/gin"
+	robotstore "github.com/yaoapp/yao/agent/robot/store"
+	robottypes "github.com/yaoapp/yao/agent/robot/types"
+	"github.com/yaoapp/yao/openapi/chat"
+	"github.com/yaoapp/yao/openapi/response"
+)
+
+// resolveHostAssistantID resolves the host assistant ID from a robot member ID.
+// It fetches the RobotRecord, parses its config, and returns the PhaseHost agent ID.
+func resolveHostAssistantID(ctx context.Context, memberID string) (string, *robotstore.RobotRecord, error) {
+	store := robotstore.NewRobotStore()
+	record, err := store.Get(ctx, memberID)
+	if err != nil {
+		return "", nil, fmt.Errorf("failed to get robot: %w", err)
+	}
+	if record == nil {
+		return "", nil, fmt.Errorf("robot not found: %s", memberID)
+	}
+
+	config, err := robottypes.ParseConfig(record.RobotConfig)
+	if err != nil {
+		return "", nil, fmt.Errorf("failed to parse robot config: %w", err)
+	}
+
+	var hostID string
+	if config != nil && config.Resources != nil {
+		hostID = config.Resources.GetPhaseAgent(robottypes.PhaseHost)
+	} else {
+		hostID = "__yao." + string(robottypes.PhaseHost)
+	}
+
+	return hostID, record, nil
+}
+
+// injectAssistantID sets the assistant_id query parameter on the gin request,
+// so that downstream GetCompletionRequest can pick it up.
+func injectAssistantID(c *gin.Context, assistantID string) {
+	q := c.Request.URL.Query()
+	q.Set("assistant_id", assistantID)
+	c.Request.URL.RawQuery = q.Encode()
+}
+
+// RobotCompletions handles POST /v1/agent/robots/:id/completions
+// Mirror API that resolves the robot's host assistant and delegates to standard chat completions.
+func RobotCompletions(c *gin.Context) {
+	robotID := c.Param("id")
+	if robotID == "" {
+		response.RespondWithError(c, response.StatusBadRequest, &response.ErrorResponse{
+			Code:             response.ErrInvalidRequest.Code,
+			ErrorDescription: "robot id is required",
+		})
+		return
+	}
+
+	hostID, _, err := resolveHostAssistantID(c.Request.Context(), robotID)
+	if err != nil {
+		response.RespondWithError(c, response.StatusInternalServerError, &response.ErrorResponse{
+			Code:             response.ErrServerError.Code,
+			ErrorDescription: err.Error(),
+		})
+		return
+	}
+
+	injectAssistantID(c, hostID)
+	chat.GinCreateCompletions(c)
+}
+
+// RobotAppendMessages handles POST /v1/agent/robots/:id/completions/:context_id/append
+// Mirror API that resolves the robot's host assistant and delegates to standard append.
+func RobotAppendMessages(c *gin.Context) {
+	robotID := c.Param("id")
+	if robotID == "" {
+		response.RespondWithError(c, response.StatusBadRequest, &response.ErrorResponse{
+			Code:             response.ErrInvalidRequest.Code,
+			ErrorDescription: "robot id is required",
+		})
+		return
+	}
+
+	hostID, _, err := resolveHostAssistantID(c.Request.Context(), robotID)
+	if err != nil {
+		response.RespondWithError(c, response.StatusInternalServerError, &response.ErrorResponse{
+			Code:             response.ErrServerError.Code,
+			ErrorDescription: err.Error(),
+		})
+		return
+	}
+
+	injectAssistantID(c, hostID)
+	chat.GinAppendMessages(c)
+}
+
+// RobotHostID handles GET /v1/agent/robots/:id/host
+// Returns the host assistant ID for a robot (used by frontend to know which assistant to chat with).
+func RobotHostID(c *gin.Context) {
+	robotID := c.Param("id")
+	if robotID == "" {
+		response.RespondWithError(c, response.StatusBadRequest, &response.ErrorResponse{
+			Code:             response.ErrInvalidRequest.Code,
+			ErrorDescription: "robot id is required",
+		})
+		return
+	}
+
+	hostID, _, err := resolveHostAssistantID(c.Request.Context(), robotID)
+	if err != nil {
+		response.RespondWithError(c, response.StatusInternalServerError, &response.ErrorResponse{
+			Code:             response.ErrServerError.Code,
+			ErrorDescription: err.Error(),
+		})
+		return
+	}
+
+	response.RespondWithSuccess(c, response.StatusOK, gin.H{
+		"assistant_id": hostID,
+		"robot_id":     robotID,
+	})
+}

openapi/agent/robot/execute.go

@@ -0,0 +1,98 @@
+package robot
+
+import (
+	"errors"
+
+	"github.com/gin-gonic/gin"
+	robotapi "github.com/yaoapp/yao/agent/robot/api"
+	robottypes "github.com/yaoapp/yao/agent/robot/types"
+	"github.com/yaoapp/yao/openapi/oauth/authorized"
+	"github.com/yaoapp/yao/openapi/response"
+)
+
+// ExecuteRequest is the request body for POST /v1/agent/robots/:id/execute
+type ExecuteRequest struct {
+	Goals   string                 `json:"goals" binding:"required"`
+	Context map[string]interface{} `json:"context,omitempty"`
+	ChatID  string                 `json:"chat_id,omitempty"`
+}
+
+// ExecuteRobot handles POST /v1/agent/robots/:id/execute
+// Directly triggers robot execution with confirmed goals, bypassing Host Agent conversation.
+// Called by CUI after the Host Agent's NEXT HOOK sends a robot.execute Action.
+func ExecuteRobot(c *gin.Context) {
+	authInfo := authorized.GetInfo(c)
+	if authInfo == nil || (authInfo.Subject == "" && authInfo.UserID == "") {
+		response.RespondWithError(c, response.StatusUnauthorized, &response.ErrorResponse{
+			Code:             response.ErrInvalidToken.Code,
+			ErrorDescription: "Authentication required",
+		})
+		return
+	}
+
+	robotID := c.Param("id")
+	if robotID == "" {
+		response.RespondWithError(c, response.StatusBadRequest, &response.ErrorResponse{
+			Code:             response.ErrInvalidRequest.Code,
+			ErrorDescription: "robot id is required",
+		})
+		return
+	}
+
+	var req ExecuteRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.RespondWithError(c, response.StatusBadRequest, &response.ErrorResponse{
+			Code:             response.ErrInvalidRequest.Code,
+			ErrorDescription: "Invalid request body: " + err.Error(),
+		})
+		return
+	}
+
+	ctx := robottypes.NewContext(c.Request.Context(), authInfo)
+
+	// Build TriggerInput with confirmed goals from Host Agent.
+	// Passing goals via Data["goals"] allows RunGoals to skip the Goals Agent
+	// and use the pre-confirmed goals directly.
+	data := map[string]interface{}{
+		"goals": req.Goals,
+	}
+	if req.Context != nil {
+		data["context"] = req.Context
+	}
+	if req.ChatID != "" {
+		data["chat_id"] = req.ChatID
+	}
+	triggerInput := &robottypes.TriggerInput{
+		Data: data,
+	}
+
+	result, err := robotapi.TriggerManual(ctx, robotID, robottypes.TriggerHuman, triggerInput)
+	if err != nil {
+		if errors.Is(err, robottypes.ErrRobotNotFound) {
+			response.RespondWithError(c, response.StatusNotFound, &response.ErrorResponse{
+				Code:             response.ErrInvalidRequest.Code,
+				ErrorDescription: "Robot not found: " + robotID,
+			})
+			return
+		}
+		response.RespondWithError(c, response.StatusInternalServerError, &response.ErrorResponse{
+			Code:             response.ErrServerError.Code,
+			ErrorDescription: "Failed to execute: " + err.Error(),
+		})
+		return
+	}
+
+	if !result.Accepted {
+		response.RespondWithError(c, response.StatusBadRequest, &response.ErrorResponse{
+			Code:             response.ErrInvalidRequest.Code,
+			ErrorDescription: result.Message,
+		})
+		return
+	}
+
+	response.RespondWithSuccess(c, response.StatusOK, gin.H{
+		"execution_id": result.ExecutionID,
+		"status":       "started",
+		"message":      result.Message,
+	})
+}

openapi/agent/robot/robot.go

@@ -3,6 +3,8 @@ package robot
 import (
 	"github.com/gin-gonic/gin"
 	"github.com/yaoapp/yao/openapi/oauth/types"
+
+	_ "github.com/yaoapp/yao/agent/robot" // register robot.* process handlers
 )
 
 // Attach attaches the robot API handlers to the router with OAuth protection
@@ -42,6 +44,14 @@ func Attach(group *gin.RouterGroup, oauth types.OAuth) {
 	group.POST("/:id/trigger", TriggerRobot)     // POST /robots/:id/trigger - Trigger robot execution
 	group.POST("/:id/intervene", InterveneRobot) // POST /robots/:id/intervene - Human intervention
 
+	// Host Agent Chat (mirror of standard Chat Completion API)
+	group.GET("/:id/host", RobotHostID)                                    // GET /robots/:id/host - Get host assistant ID
+	group.POST("/:id/completions", RobotCompletions)                       // POST /robots/:id/completions - Chat with host agent
+	group.POST("/:id/completions/:context_id/append", RobotAppendMessages) // POST /robots/:id/completions/:context_id/append - Append messages
+
+	// Execute - Direct execution trigger (called by CUI after Host confirms goals)
+	group.POST("/:id/execute", ExecuteRobot) // POST /robots/:id/execute - Execute with confirmed goals
+
 	// V2: Unified Interact API (suspend-resume, human-in-the-loop)
 	group.POST("/:id/interact", InteractRobot)                               // POST /robots/:id/interact - Unified interaction
 	group.POST("/:id/executions/:exec_id/tasks/:task_id/reply", ReplyToTask) // POST /robots/:id/executions/:exec_id/tasks/:task_id/reply - Reply to waiting task

openapi/chat/session.go

@@ -456,6 +456,7 @@ func buildChatFilter(c *gin.Context, authInfo *oauthtypes.AuthorizedInfo) storet
 	filter.AssistantID = strings.TrimSpace(c.Query("assistant_id"))
 	filter.Status = strings.TrimSpace(c.Query("status"))
 	filter.Keywords = strings.TrimSpace(c.Query("keywords"))
+	filter.ChatIDPrefix = strings.TrimSpace(c.Query("chat_id_prefix"))
 
 	// Time range filter
 	if startTimeStr := c.Query("start_time"); startTimeStr != "" {

openapi/tests/agent/robot_host_test.go

@@ -0,0 +1,317 @@
+package openapi_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/yaoapp/yao/openapi"
+	"github.com/yaoapp/yao/openapi/tests/testutils"
+)
+
+// TestRobotHostID tests GET /v1/agent/robots/:id/host
+// Returns the host assistant ID for a given robot.
+func TestRobotHostID(t *testing.T) {
+	serverURL := testutils.Prepare(t)
+	defer testutils.Clean()
+
+	baseURL := ""
+	if openapi.Server != nil && openapi.Server.Config != nil {
+		baseURL = openapi.Server.Config.BaseURL
+	}
+
+	client := testutils.RegisterTestClient(t, "Host ID Test Client", []string{"https://localhost/callback"})
+	defer testutils.CleanupTestClient(t, client.ClientID)
+	tokenInfo := testutils.ObtainAccessToken(t, serverURL, client.ClientID, client.ClientSecret, "https://localhost/callback", "openid profile")
+
+	// Create a test robot with a minimal config
+	robotID := fmt.Sprintf("test_host_id_%d", time.Now().UnixNano())
+	createTestRobotForHost(t, serverURL, baseURL, tokenInfo.AccessToken, robotID, "Host ID Test Robot")
+	defer deleteTestRobotForHost(t, serverURL, baseURL, tokenInfo.AccessToken, robotID)
+
+	t.Run("GetHostIDSuccess", func(t *testing.T) {
+		req, err := http.NewRequest("GET", serverURL+baseURL+"/agent/robots/"+robotID+"/host", nil)
+		require.NoError(t, err)
+		req.Header.Set("Authorization", "Bearer "+tokenInfo.AccessToken)
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		assert.Equal(t, http.StatusOK, resp.StatusCode)
+
+		var response map[string]interface{}
+		err = json.NewDecoder(resp.Body).Decode(&response)
+		require.NoError(t, err)
+
+		assert.Contains(t, response, "assistant_id", "Response should contain assistant_id")
+		assert.Contains(t, response, "robot_id", "Response should contain robot_id")
+		assert.Equal(t, robotID, response["robot_id"])
+		// assistant_id is either configured or falls back to "__yao.host"
+		assistantID, ok := response["assistant_id"].(string)
+		assert.True(t, ok, "assistant_id should be a string")
+		assert.NotEmpty(t, assistantID, "assistant_id should not be empty")
+		t.Logf("✓ Host ID: robot=%s, assistant=%s", robotID, assistantID)
+	})
+
+	t.Run("GetHostIDNotFound", func(t *testing.T) {
+		req, err := http.NewRequest("GET", serverURL+baseURL+"/agent/robots/non_existent_robot/host", nil)
+		require.NoError(t, err)
+		req.Header.Set("Authorization", "Bearer "+tokenInfo.AccessToken)
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		assert.Equal(t, http.StatusInternalServerError, resp.StatusCode)
+		t.Logf("✓ Non-existent robot returns error for /host")
+	})
+
+	t.Run("GetHostIDUnauthorized", func(t *testing.T) {
+		req, err := http.NewRequest("GET", serverURL+baseURL+"/agent/robots/"+robotID+"/host", nil)
+		require.NoError(t, err)
+		// No Authorization header
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		assert.Equal(t, http.StatusUnauthorized, resp.StatusCode)
+		t.Logf("✓ Unauthorized request rejected")
+	})
+}
+
+// TestRobotExecute tests POST /v1/agent/robots/:id/execute
+// Called by CUI after Host Agent confirms goals via robot.execute Action.
+func TestRobotExecute(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping execute tests in short mode (requires manager)")
+	}
+
+	serverURL := testutils.Prepare(t)
+	defer testutils.Clean()
+
+	baseURL := ""
+	if openapi.Server != nil && openapi.Server.Config != nil {
+		baseURL = openapi.Server.Config.BaseURL
+	}
+
+	client := testutils.RegisterTestClient(t, "Execute Test Client", []string{"https://localhost/callback"})
+	defer testutils.CleanupTestClient(t, client.ClientID)
+	tokenInfo := testutils.ObtainAccessToken(t, serverURL, client.ClientID, client.ClientSecret, "https://localhost/callback", "openid profile")
+
+	robotID := fmt.Sprintf("test_execute_%d", time.Now().UnixNano())
+	createTestRobotForHost(t, serverURL, baseURL, tokenInfo.AccessToken, robotID, "Execute Test Robot")
+	defer deleteTestRobotForHost(t, serverURL, baseURL, tokenInfo.AccessToken, robotID)
+
+	t.Run("ExecuteWithGoals", func(t *testing.T) {
+		execData := map[string]interface{}{
+			"goals":   "Create a mecha image with sci-fi style",
+			"chat_id": fmt.Sprintf("robot_%s_%d", robotID, time.Now().UnixMilli()),
+			"context": map[string]interface{}{
+				"style":   "sci-fi",
+				"subject": "mecha",
+			},
+		}
+
+		body, _ := json.Marshal(execData)
+		req, err := http.NewRequest("POST", serverURL+baseURL+"/agent/robots/"+robotID+"/execute", bytes.NewBuffer(body))
+		require.NoError(t, err)
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+tokenInfo.AccessToken)
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		// Either 200 (accepted) or 400 (trigger disabled / manager not running)
+		// Both are valid — we test the API contract
+		var response map[string]interface{}
+		err = json.NewDecoder(resp.Body).Decode(&response)
+		require.NoError(t, err)
+
+		if resp.StatusCode == http.StatusOK {
+			assert.Contains(t, response, "execution_id", "Should return execution_id")
+			assert.Equal(t, "started", response["status"])
+			t.Logf("✓ Execute accepted: execution_id=%v", response["execution_id"])
+		} else {
+			// Manager not running or trigger disabled is acceptable in test env
+			t.Logf("Execute returned %d: %v (manager may not be running)", resp.StatusCode, response)
+		}
+	})
+
+	t.Run("ExecuteMissingGoals", func(t *testing.T) {
+		// goals is required — omitting it should fail with 400
+		execData := map[string]interface{}{
+			"chat_id": fmt.Sprintf("robot_%s_%d", robotID, time.Now().UnixMilli()),
+		}
+
+		body, _ := json.Marshal(execData)
+		req, err := http.NewRequest("POST", serverURL+baseURL+"/agent/robots/"+robotID+"/execute", bytes.NewBuffer(body))
+		require.NoError(t, err)
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+tokenInfo.AccessToken)
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		assert.Equal(t, http.StatusBadRequest, resp.StatusCode)
+		t.Logf("✓ Missing goals returns 400")
+	})
+
+	t.Run("ExecuteNotFound", func(t *testing.T) {
+		execData := map[string]interface{}{
+			"goals": "Some goal",
+		}
+		body, _ := json.Marshal(execData)
+		req, err := http.NewRequest("POST", serverURL+baseURL+"/agent/robots/non_existent_robot_xyz/execute", bytes.NewBuffer(body))
+		require.NoError(t, err)
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+tokenInfo.AccessToken)
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		// 404 (robot not found), 400 (trigger disabled) or 500 (manager not running) — all acceptable
+		assert.True(t,
+			resp.StatusCode == http.StatusNotFound ||
+				resp.StatusCode == http.StatusBadRequest ||
+				resp.StatusCode == http.StatusInternalServerError,
+			"Non-existent robot should return 4xx or 500, got %d", resp.StatusCode)
+		t.Logf("✓ Non-existent robot execute returns %d", resp.StatusCode)
+	})
+
+	t.Run("ExecuteUnauthorized", func(t *testing.T) {
+		execData := map[string]interface{}{
+			"goals": "Some goal",
+		}
+		body, _ := json.Marshal(execData)
+		req, err := http.NewRequest("POST", serverURL+baseURL+"/agent/robots/"+robotID+"/execute", bytes.NewBuffer(body))
+		require.NoError(t, err)
+		req.Header.Set("Content-Type", "application/json")
+		// No Authorization header
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		assert.Equal(t, http.StatusUnauthorized, resp.StatusCode)
+		t.Logf("✓ Unauthorized execute returns 401")
+	})
+}
+
+// TestRobotCompletionsMirrorAPI tests POST /v1/agent/robots/:id/completions
+// Mirror API that resolves host assistant and delegates to standard chat completions.
+func TestRobotCompletionsMirrorAPI(t *testing.T) {
+	serverURL := testutils.Prepare(t)
+	defer testutils.Clean()
+
+	baseURL := ""
+	if openapi.Server != nil && openapi.Server.Config != nil {
+		baseURL = openapi.Server.Config.BaseURL
+	}
+
+	client := testutils.RegisterTestClient(t, "Completions Mirror Test Client", []string{"https://localhost/callback"})
+	defer testutils.CleanupTestClient(t, client.ClientID)
+	tokenInfo := testutils.ObtainAccessToken(t, serverURL, client.ClientID, client.ClientSecret, "https://localhost/callback", "openid profile")
+
+	robotID := fmt.Sprintf("test_completions_%d", time.Now().UnixNano())
+	createTestRobotForHost(t, serverURL, baseURL, tokenInfo.AccessToken, robotID, "Completions Mirror Test Robot")
+	defer deleteTestRobotForHost(t, serverURL, baseURL, tokenInfo.AccessToken, robotID)
+
+	t.Run("RejectsEmptyBody", func(t *testing.T) {
+		req, err := http.NewRequest("POST", serverURL+baseURL+"/agent/robots/"+robotID+"/completions",
+			bytes.NewBuffer([]byte("{}")))
+		require.NoError(t, err)
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+tokenInfo.AccessToken)
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		// Should be handled by the chat completion handler
+		// 4xx or 5xx is acceptable — we're verifying the route resolves
+		assert.True(t, resp.StatusCode >= 400, "Empty completions request should fail, got %d", resp.StatusCode)
+		t.Logf("✓ Empty completions body handled: %d", resp.StatusCode)
+	})
+
+	t.Run("RejectsNonExistentRobot", func(t *testing.T) {
+		body, _ := json.Marshal(map[string]interface{}{
+			"chat_id":      "test_chat_id",
+			"assistant_id": "some_assistant",
+			"messages": []map[string]interface{}{
+				{"role": "user", "content": "hello"},
+			},
+		})
+		req, err := http.NewRequest("POST", serverURL+baseURL+"/agent/robots/non_existent_robot/completions",
+			bytes.NewBuffer(body))
+		require.NoError(t, err)
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+tokenInfo.AccessToken)
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		assert.True(t, resp.StatusCode >= 400, "Non-existent robot should return error, got %d", resp.StatusCode)
+		t.Logf("✓ Non-existent robot completions handled: %d", resp.StatusCode)
+	})
+
+	t.Run("UnauthorizedReturns401", func(t *testing.T) {
+		body, _ := json.Marshal(map[string]interface{}{
+			"chat_id": "test_chat",
+		})
+		req, err := http.NewRequest("POST", serverURL+baseURL+"/agent/robots/"+robotID+"/completions",
+			bytes.NewBuffer(body))
+		require.NoError(t, err)
+		req.Header.Set("Content-Type", "application/json")
+		// No Authorization header
+
+		resp, err := http.DefaultClient.Do(req)
+		require.NoError(t, err)
+		defer resp.Body.Close()
+
+		assert.Equal(t, http.StatusUnauthorized, resp.StatusCode)
+		t.Logf("✓ Unauthorized completions returns 401")
+	})
+}
+
+// ============================================================================
+// Helper Functions
+// ============================================================================
+
+func createTestRobotForHost(t *testing.T, serverURL, baseURL, token, robotID, name string) {
+	t.Helper()
+	createData := map[string]interface{}{
+		"member_id":    robotID,
+		"team_id":      "test_team_host_001",
+		"display_name": name,
+		"bio":          "A test robot for host API testing",
+	}
+	body, _ := json.Marshal(createData)
+	req, err := http.NewRequest("POST", serverURL+baseURL+"/agent/robots", bytes.NewBuffer(body))
+	require.NoError(t, err)
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "Bearer "+token)
+	resp, err := http.DefaultClient.Do(req)
+	require.NoError(t, err)
+	resp.Body.Close()
+}
+
+func deleteTestRobotForHost(t *testing.T, serverURL, baseURL, token, robotID string) {
+	t.Helper()
+	req, _ := http.NewRequest("DELETE", serverURL+baseURL+"/agent/robots/"+robotID, nil)
+	req.Header.Set("Authorization", "Bearer "+token)
+	resp, err := http.DefaultClient.Do(req)
+	if err == nil {
+		resp.Body.Close()
+	}
+}