diff --git a/internal/ai/runtime/internal/impl/callbacks/agent_trace_handler.go b/internal/ai/runtime/internal/impl/callbacks/agent_trace_handler.go
index 38cb25a..87b61f7 100644
--- a/internal/ai/runtime/internal/impl/callbacks/agent_trace_handler.go
+++ b/internal/ai/runtime/internal/impl/callbacks/agent_trace_handler.go
@@ -6,6 +6,8 @@ import (
 	"strings"
 	"time"
 
+	"cs-agent/internal/pkg/toolx"
+
 	einotool "github.com/cloudwego/eino/components/tool"
 
 	"github.com/cloudwego/eino/adk"
@@ -56,10 +58,25 @@ func (h *RuntimeTraceHandler) WrapInvokableToolCall(_ context.Context, endpoint
 			item.ErrorMessage = err.Error()
 		}
 		h.collector.AddToolItem(item)
+		if metadata, ok := h.resolveToolMetadata(item.ToolName); ok && strings.TrimSpace(metadata.ToolCode) == toolx.BuiltinToolSearchToolCode {
+			h.collector.AddToolSearchItem(buildToolSearchTraceItem(argumentsInJSON, result, err))
+		}
 		return result, err
 	}, nil
 }
 
+func (h *RuntimeTraceHandler) resolveToolMetadata(modelToolName string) (ToolMetadata, bool) {
+	if h == nil || h.toolMetadataBy == nil {
+		return ToolMetadata{}, false
+	}
+	modelToolName = strings.TrimSpace(modelToolName)
+	if modelToolName == "" {
+		return ToolMetadata{}, false
+	}
+	metadata, ok := h.toolMetadataBy[modelToolName]
+	return metadata, ok
+}
+
 func parseToolArguments(argumentsInJSON string) map[string]any {
 	argumentsInJSON = strings.TrimSpace(argumentsInJSON)
 	if argumentsInJSON == "" {
@@ -83,3 +100,62 @@ func previewToolText(text string, limit int) string {
 	}
 	return string(runes[:limit]) + "..."
 }
+
+func buildToolSearchTraceItem(argumentsInJSON string, result string, runErr error) ToolSearchTraceItem {
+	item := ToolSearchTraceItem{
+		Status: "ok",
+	}
+	args := parseToolArguments(argumentsInJSON)
+	item.Query = strings.TrimSpace(readToolSearchString(args, "query"))
+	item.TargetToolCode = strings.TrimSpace(readToolSearchString(args, "toolCode"))
+	if item.TargetToolCode != "" {
+		item.Action = "invoke"
+		item.TargetServerCode, item.TargetToolName = toolx.SplitMCPToolCode(item.TargetToolCode)
+	} else {
+		item.Action = "search"
+	}
+	if runErr != nil {
+		item.Status = "error"
+		item.ErrorMessage = runErr.Error()
+		return item
+	}
+	payload := make(map[string]any)
+	if err := json.Unmarshal([]byte(strings.TrimSpace(result)), &payload); err != nil {
+		return item
+	}
+	candidateItems, _ := payload["candidates"].([]any)
+	item.CandidateToolCodes = extractCandidateToolCodes(candidateItems)
+	return item
+}
+
+func readToolSearchString(data map[string]any, key string) string {
+	if len(data) == 0 {
+		return ""
+	}
+	value, ok := data[key]
+	if !ok {
+		return ""
+	}
+	text, _ := value.(string)
+	return text
+}
+
+func extractCandidateToolCodes(items []any) []string {
+	if len(items) == 0 {
+		return nil
+	}
+	ret := make([]string, 0, len(items))
+	for _, item := range items {
+		payload, ok := item.(map[string]any)
+		if !ok {
+			continue
+		}
+		toolCode, _ := payload["toolCode"].(string)
+		toolCode = strings.TrimSpace(toolCode)
+		if toolCode == "" {
+			continue
+		}
+		ret = append(ret, toolCode)
+	}
+	return ret
+}
diff --git a/internal/ai/runtime/internal/impl/callbacks/runlog_callback.go b/internal/ai/runtime/internal/impl/callbacks/runlog_callback.go
index e323b99..e67e71e 100644
--- a/internal/ai/runtime/internal/impl/callbacks/runlog_callback.go
+++ b/internal/ai/runtime/internal/impl/callbacks/runlog_callback.go
@@ -39,3 +39,13 @@ func (c *RuntimeTraceCollector) AddToolItem(item ToolTraceItem) {
 	c.Data.Tools.Count++
 	c.Data.Tools.Items = append(c.Data.Tools.Items, item)
 }
+
+func (c *RuntimeTraceCollector) AddToolSearchItem(item ToolSearchTraceItem) {
+	if c == nil {
+		return
+	}
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	c.Data.ToolSearch.Count++
+	c.Data.ToolSearch.Items = append(c.Data.ToolSearch.Items, item)
+}
diff --git a/internal/ai/runtime/internal/impl/callbacks/trace_callback.go b/internal/ai/runtime/internal/impl/callbacks/trace_callback.go
index 05b5cc7..71eea7a 100644
--- a/internal/ai/runtime/internal/impl/callbacks/trace_callback.go
+++ b/internal/ai/runtime/internal/impl/callbacks/trace_callback.go
@@ -11,6 +11,17 @@ type ToolTraceItem struct {
 	ErrorMessage  string         `json:"errorMessage,omitempty"`
 }
 
+type ToolSearchTraceItem struct {
+	Action             string   `json:"action,omitempty"`
+	Query              string   `json:"query,omitempty"`
+	TargetToolCode     string   `json:"targetToolCode,omitempty"`
+	TargetServerCode   string   `json:"targetServerCode,omitempty"`
+	TargetToolName     string   `json:"targetToolName,omitempty"`
+	CandidateToolCodes []string `json:"candidateToolCodes,omitempty"`
+	Status             string   `json:"status,omitempty"`
+	ErrorMessage       string   `json:"errorMessage,omitempty"`
+}
+
 type RetrieverTraceItem struct {
 	Query           string  `json:"query,omitempty"`
 	KnowledgeBaseID int64   `json:"knowledgeBaseId,omitempty"`
@@ -47,6 +58,10 @@ type RuntimeTraceData struct {
 		Count int             `json:"count,omitempty"`
 		Items []ToolTraceItem `json:"items,omitempty"`
 	} `json:"tools"`
+	ToolSearch struct {
+		Count int                   `json:"count,omitempty"`
+		Items []ToolSearchTraceItem `json:"items,omitempty"`
+	} `json:"toolSearch"`
 	Output struct {
 		ReplyText    string `json:"replyText,omitempty"`
 		FinishReason string `json:"finishReason,omitempty"`
diff --git a/internal/ai/runtime/reply_service.go b/internal/ai/runtime/reply_service.go
index 316e94b..82c41ca 100644
--- a/internal/ai/runtime/reply_service.go
+++ b/internal/ai/runtime/reply_service.go
@@ -11,6 +11,7 @@ import (
 	"cs-agent/internal/models"
 	"cs-agent/internal/pkg/dto"
 	"cs-agent/internal/pkg/enums"
+	"cs-agent/internal/pkg/toolx"
 	"cs-agent/internal/repositories"
 	svc "cs-agent/internal/services"
 
@@ -331,6 +332,7 @@ func (s *aiReplyService) writeRunLog(startedAt time.Time, message models.Message
 		PlannedSkillCode: strings.TrimSpace(summaryPlannedSkillCode(summary)),
 		PlannedSkillName: strings.TrimSpace(summaryPlannedSkillName(summary)),
 		SkillRouteTrace:  strings.TrimSpace(summarySkillRouteTrace(summary)),
+		ToolSearchTrace:  extractToolSearchTrace(summary),
 		PlannedToolCode:  plannedToolCode,
 		PlanReason:       planReason,
 		InterruptType:    firstInterruptType(summary),
@@ -378,10 +380,15 @@ func buildRunLogPlan(summary *Summary) (plannedAction, plannedToolCode, planReas
 		return "interrupt", "", "pending interrupt checkpoint expired"
 	}
 	if summary.Interrupted {
-		return "tool", firstInvokedToolCode(summary), "agent interrupted and is waiting for user confirmation"
+		return "tool", summaryPrimaryToolCode(summary), "agent interrupted and is waiting for user confirmation"
 	}
 	if len(summary.InvokedToolCodes) > 0 {
-		return "tool", strings.TrimSpace(summary.InvokedToolCodes[0]), "agent invoked MCP tool"
+		toolCode := summaryPrimaryToolCode(summary)
+		reason := "agent invoked MCP tool"
+		if toolCode != "" && toolCode != firstInvokedToolCode(summary) {
+			reason = "agent invoked dynamic tool via tool_search"
+		}
+		return "tool", toolCode, reason
 	}
 	if strings.TrimSpace(summary.ReplyText) != "" {
 		return "reply", "", "agent replied directly"
@@ -541,6 +548,68 @@ func firstInvokedToolCode(summary *Summary) string {
 	return ""
 }
 
+func summaryPrimaryToolCode(summary *Summary) string {
+	if summary == nil {
+		return ""
+	}
+	toolCode := firstInvokedToolCode(summary)
+	if toolCode != toolx.BuiltinToolSearchToolCode {
+		return toolCode
+	}
+	if targetToolCode := firstToolSearchTargetToolCode(summary); targetToolCode != "" {
+		return targetToolCode
+	}
+	return toolCode
+}
+
+func extractToolSearchTrace(summary *Summary) string {
+	if summary == nil {
+		return ""
+	}
+	trace := parseRuntimeTraceData(summary.TraceData)
+	if len(trace.ToolSearch.Items) == 0 || len(trace.ToolSearch.Raw) == 0 {
+		return ""
+	}
+	return string(trace.ToolSearch.Raw)
+}
+
+func firstToolSearchTargetToolCode(summary *Summary) string {
+	trace := parseRuntimeTraceData(summary.TraceData)
+	for _, item := range trace.ToolSearch.Items {
+		toolCode := strings.TrimSpace(item.TargetToolCode)
+		if toolCode != "" {
+			return toolCode
+		}
+	}
+	return ""
+}
+
+type runtimeTraceProjection struct {
+	ToolSearch struct {
+		Raw   json.RawMessage `json:"-"`
+		Items []struct {
+			TargetToolCode string `json:"targetToolCode"`
+		} `json:"items"`
+	} `json:"toolSearch"`
+}
+
+func parseRuntimeTraceData(raw string) runtimeTraceProjection {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return runtimeTraceProjection{}
+	}
+	var payload map[string]json.RawMessage
+	if err := json.Unmarshal([]byte(raw), &payload); err != nil {
+		return runtimeTraceProjection{}
+	}
+	var trace runtimeTraceProjection
+	if toolSearchRaw, ok := payload["toolSearch"]; ok && len(toolSearchRaw) > 0 {
+		trace.ToolSearch.Raw = append(json.RawMessage(nil), toolSearchRaw...)
+		_ = json.Unmarshal(toolSearchRaw, &trace.ToolSearch)
+	}
+	return trace
+}
+
 func isCancellationReply(replyText string) bool {
 	replyText = strings.TrimSpace(replyText)
 	return strings.Contains(replyText, "已取消本次工单创建")
diff --git a/internal/builders/agent_run_log_builder.go b/internal/builders/agent_run_log_builder.go
index 94f40aa..6daa240 100644
--- a/internal/builders/agent_run_log_builder.go
+++ b/internal/builders/agent_run_log_builder.go
@@ -20,6 +20,7 @@ func BuildAgentRunLog(item *models.AgentRunLog) response.AgentRunLogResponse {
 		PlannedSkillCode: item.PlannedSkillCode,
 		PlannedSkillName: item.PlannedSkillName,
 		SkillRouteTrace:  item.SkillRouteTrace,
+		ToolSearchTrace:  item.ToolSearchTrace,
 		PlannedToolCode:  item.PlannedToolCode,
 		PlanReason:       item.PlanReason,
 		InterruptType:    item.InterruptType,
diff --git a/internal/models/models.go b/internal/models/models.go
index 8491b9d..d59d053 100644
--- a/internal/models/models.go
+++ b/internal/models/models.go
@@ -952,6 +952,7 @@ type AgentRunLog struct {
 	PlannedSkillCode string    `gorm:"type:varchar(100);not null;default:'';index"`
 	PlannedSkillName string    `gorm:"type:varchar(100);not null;default:''"`
 	SkillRouteTrace  string    `gorm:"type:text"`
+	ToolSearchTrace  string    `gorm:"type:text"`
 	PlannedToolCode  string    `gorm:"type:varchar(200);not null;default:'';index"`
 	PlanReason       string    `gorm:"type:varchar(500);not null;default:''"`
 	InterruptType    string    `gorm:"type:varchar(50);not null;default:'';index"`
diff --git a/internal/pkg/dto/response/skill_response.go b/internal/pkg/dto/response/skill_response.go
index 1745ede..8c93f42 100644
--- a/internal/pkg/dto/response/skill_response.go
+++ b/internal/pkg/dto/response/skill_response.go
@@ -48,6 +48,7 @@ type AgentRunLogResponse struct {
 	PlannedSkillCode string `json:"plannedSkillCode"`
 	PlannedSkillName string `json:"plannedSkillName"`
 	SkillRouteTrace  string `json:"skillRouteTrace"`
+	ToolSearchTrace  string `json:"toolSearchTrace"`
 	PlannedToolCode  string `json:"plannedToolCode"`
 	PlanReason       string `json:"planReason"`
 	InterruptType    string `json:"interruptType"`
diff --git a/web/app/(console)/agent-run-logs/page.tsx b/web/app/(console)/agent-run-logs/page.tsx
index 4725f15..c981428 100644
--- a/web/app/(console)/agent-run-logs/page.tsx
+++ b/web/app/(console)/agent-run-logs/page.tsx
@@ -91,6 +91,10 @@ export default function DashboardAgentRunLogsPage() {
     () => safeParseJSON(activeLog?.traceData ?? ""),
     [activeLog?.traceData]
   )
+  const activeToolSearchTrace = useMemo(
+    () => safeParseJSON(activeLog?.toolSearchTrace ?? ""),
+    [activeLog?.toolSearchTrace]
+  )
 
   const aiAgentOptions = useMemo(
     () => [
@@ -372,6 +376,14 @@ export default function DashboardAgentRunLogsPage() {
                   ]}
                 />
 
+                <TextBlock
+                  title="动态工具选择"
+                  value={
+                    activeToolSearchTrace
+                      ? JSON.stringify(activeToolSearchTrace, null, 2)
+                      : activeLog.toolSearchTrace
+                  }
+                />
                 <TextBlock
                   icon={<BotMessageSquareIcon className="size-4" />}
                   title="用户问题"
diff --git a/web/lib/api/admin.ts b/web/lib/api/admin.ts
index 5190b95..e76f8b4 100644
--- a/web/lib/api/admin.ts
+++ b/web/lib/api/admin.ts
@@ -365,6 +365,7 @@ export type AgentRunLog = {
   plannedSkillCode: string
   plannedSkillName: string
   skillRouteTrace: string
+  toolSearchTrace: string
   plannedToolCode: string
   planReason: string
   interruptType: string