diff --git a/internal/app/app.go b/internal/app/app.go
index 38ec3d53..e39dfbad 100644
--- a/internal/app/app.go
+++ b/internal/app/app.go
@@ -15,6 +15,7 @@ import (
 	"time"
 
 	"cyberstrike-ai/internal/agent"
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/c2"
 	"cyberstrike-ai/internal/config"
 	"cyberstrike-ai/internal/database"
@@ -61,6 +62,7 @@ type App struct {
 	c2Watchdog         *c2.SessionWatchdog       // C2 会话看门狗
 	c2WatchdogCancel   context.CancelFunc        // 看门狗取消函数
 	c2Handler          *handler.C2Handler        // C2 REST（与 Manager 生命周期同步）
+	auditSvc           *audit.Service
 }
 
 // New 创建新应用
@@ -93,6 +95,10 @@ func New(cfg *config.Config, log *logger.Logger, configPath string) (*App, error
 		return nil, fmt.Errorf("初始化数据库失败: %w", err)
 	}
 
+	auditSvc := audit.NewService(db, cfg, log.Logger)
+	auditSvc.PurgeExpired()
+	audit.StartRetentionLoop(auditSvc, log.Logger)
+
 	// 创建MCP服务器（带数据库持久化）
 	mcpServer := mcp.NewServerWithStorage(log.Logger, db)
 	mcpServer.ConfigureHTTPToolCallTimeoutFromAgentMinutes(cfg.Agent.ToolTimeoutMinutes)
@@ -222,6 +228,7 @@ func New(cfg *config.Config, log *logger.Logger, configPath string) (*App, error
 
 		// 创建知识库API处理器
 		knowledgeHandler = handler.NewKnowledgeHandler(knowledgeManager, knowledgeRetriever, knowledgeIndexer, db, log.Logger)
+		knowledgeHandler.SetAudit(auditSvc)
 		log.Logger.Info("知识库模块初始化完成", zap.Bool("handler_created", knowledgeHandler != nil))
 
 		// 扫描知识库并建立索引（异步）
@@ -318,31 +325,42 @@ func New(cfg *config.Config, log *logger.Logger, configPath string) (*App, error
 		log.Logger.Warn("创建 agents 目录失败", zap.String("path", agentsDir), zap.Error(err))
 	}
 	markdownAgentsHandler := handler.NewMarkdownAgentsHandler(agentsDir)
+	markdownAgentsHandler.SetAudit(auditSvc)
 	log.Logger.Info("多代理 Markdown 子 Agent 目录", zap.String("agentsDir", agentsDir))
 
 	// 创建处理器
 	agentHandler := handler.NewAgentHandler(agent, db, cfg, log.Logger)
+	agentHandler.SetAudit(auditSvc)
 	agentHandler.SetAgentsMarkdownDir(agentsDir)
 	// 如果知识库已启用，设置知识库管理器到AgentHandler以便记录检索日志
 	if knowledgeManager != nil {
 		agentHandler.SetKnowledgeManager(knowledgeManager)
 	}
 	monitorHandler := handler.NewMonitorHandler(mcpServer, executor, db, log.Logger)
+	monitorHandler.SetAudit(auditSvc)
 	monitorHandler.SetExternalMCPManager(externalMCPMgr) // 设置外部MCP管理器，以便获取外部MCP执行记录
 	notificationHandler := handler.NewNotificationHandler(db, agentHandler, log.Logger)
 	groupHandler := handler.NewGroupHandler(db, log.Logger)
 	authHandler := handler.NewAuthHandler(authManager, cfg, configPath, log.Logger)
+	authHandler.SetAudit(auditSvc)
 	attackChainHandler := handler.NewAttackChainHandler(db, &cfg.OpenAI, log.Logger)
 	vulnerabilityHandler := handler.NewVulnerabilityHandler(db, log.Logger)
+	vulnerabilityHandler.SetAudit(auditSvc)
 	webshellHandler := handler.NewWebShellHandler(log.Logger, db)
+	webshellHandler.SetAudit(auditSvc)
 	chatUploadsHandler := handler.NewChatUploadsHandler(log.Logger)
+	chatUploadsHandler.SetAudit(auditSvc)
 	registerWebshellTools(mcpServer, db, webshellHandler, log.Logger)
 	registerWebshellManagementTools(mcpServer, db, webshellHandler, log.Logger)
 	configHandler := handler.NewConfigHandler(configPath, cfg, mcpServer, executor, agent, attackChainHandler, externalMCPMgr, log.Logger)
+	configHandler.SetAudit(auditSvc)
 	agentHandler.SetHitlToolWhitelistSaver(configHandler)
 	externalMCPHandler := handler.NewExternalMCPHandler(externalMCPMgr, cfg, configPath, log.Logger)
+	externalMCPHandler.SetAudit(auditSvc)
 	roleHandler := handler.NewRoleHandler(cfg, configPath, log.Logger)
+	roleHandler.SetAudit(auditSvc)
 	skillsHandler := handler.NewSkillsHandler(cfg, configPath, log.Logger)
+	skillsHandler.SetAudit(auditSvc)
 	fofaHandler := handler.NewFofaHandler(cfg, log.Logger)
 	terminalHandler := handler.NewTerminalHandler(log.Logger)
 	if db != nil {
@@ -357,9 +375,12 @@ func New(cfg *config.Config, log *logger.Logger, configPath string) (*App, error
 		registerC2Tools(mcpServer, c2Manager, log.Logger, cfg.Server.Port)
 	}
 	c2Handler := handler.NewC2Handler(c2Manager, log.Logger)
+	c2Handler.SetAudit(auditSvc)
 
 	// 创建OpenAPI处理器
 	conversationHandler := handler.NewConversationHandler(db, log.Logger)
+	conversationHandler.SetAudit(auditSvc)
+	auditHandler := handler.NewAuditHandler(db, auditSvc, log.Logger)
 	robotHandler := handler.NewRobotHandler(cfg, db, agentHandler, log.Logger)
 	openAPIHandler := handler.NewOpenAPIHandler(db, log.Logger, resultStorage, conversationHandler, agentHandler)
 
@@ -385,6 +406,7 @@ func New(cfg *config.Config, log *logger.Logger, configPath string) (*App, error
 		c2Watchdog:         c2Watchdog,
 		c2WatchdogCancel:   watchdogCancel,
 		c2Handler:          c2Handler,
+		auditSvc:           auditSvc,
 	}
 	// 飞书/钉钉长连接（无需公网），启用时在后台启动；后续前端应用配置时会通过 RestartRobotConnections 重启
 	app.startRobotConnections()
@@ -487,6 +509,7 @@ func New(cfg *config.Config, log *logger.Logger, configPath string) (*App, error
 		fofaHandler,
 		terminalHandler,
 		app.c2Handler,
+		auditHandler,
 		mcpServer,
 		authManager,
 		openAPIHandler,
@@ -731,6 +754,7 @@ func setupRoutes(
 	fofaHandler *handler.FofaHandler,
 	terminalHandler *handler.TerminalHandler,
 	c2Handler *handler.C2Handler,
+	auditHandler *handler.AuditHandler,
 	mcpServer *mcp.Server,
 	authManager *security.AuthManager,
 	openAPIHandler *handler.OpenAPIHandler,
@@ -867,6 +891,13 @@ func setupRoutes(
 		protected.POST("/terminal/run/stream", terminalHandler.RunCommandStream)
 		protected.GET("/terminal/ws", terminalHandler.RunCommandWS)
 
+		// 平台审计日志
+		protected.GET("/audit/meta", auditHandler.Meta)
+		protected.GET("/audit/summary", auditHandler.Summary)
+		protected.GET("/audit/logs", auditHandler.ListLogs)
+		protected.GET("/audit/logs/export", auditHandler.ExportLogs)
+		protected.GET("/audit/logs/:id", auditHandler.GetLog)
+
 		// 外部MCP管理
 		protected.GET("/external-mcp", externalMCPHandler.GetExternalMCPs)
 		protected.GET("/external-mcp/stats", externalMCPHandler.GetExternalMCPStats)
@@ -1928,6 +1959,9 @@ func initializeKnowledge(
 
 	// 创建知识库API处理器
 	knowledgeHandler := handler.NewKnowledgeHandler(knowledgeManager, knowledgeRetriever, knowledgeIndexer, db, logger)
+	if app != nil && app.auditSvc != nil {
+		knowledgeHandler.SetAudit(app.auditSvc)
+	}
 	logger.Info("知识库模块初始化完成", zap.Bool("handler_created", knowledgeHandler != nil))
 
 	// 设置知识库管理器到AgentHandler以便记录检索日志
diff --git a/internal/audit/meta.go b/internal/audit/meta.go
new file mode 100644
index 00000000..33649e0c
--- /dev/null
+++ b/internal/audit/meta.go
@@ -0,0 +1,9 @@
+package audit
+
+// RetentionDays returns configured retention; 0 means keep forever.
+func (s *Service) RetentionDays() int {
+	if s == nil || s.cfg == nil {
+		return 0
+	}
+	return s.cfg.Audit.RetentionDaysEffective()
+}
diff --git a/internal/audit/record.go b/internal/audit/record.go
new file mode 100644
index 00000000..b1c1ad40
--- /dev/null
+++ b/internal/audit/record.go
@@ -0,0 +1,29 @@
+package audit
+
+import "github.com/gin-gonic/gin"
+
+// RecordAction writes a platform audit row with common defaults.
+func (s *Service) RecordAction(c *gin.Context, category, action, result, message, resourceType, resourceID string, detail map[string]interface{}) {
+	if s == nil {
+		return
+	}
+	s.Record(c, Entry{
+		Category:     category,
+		Action:       action,
+		Result:       result,
+		Message:      message,
+		ResourceType: resourceType,
+		ResourceID:   resourceID,
+		Detail:       detail,
+	})
+}
+
+// RecordOK is a shorthand for successful operations.
+func (s *Service) RecordOK(c *gin.Context, category, action, message, resourceType, resourceID string, detail map[string]interface{}) {
+	s.RecordAction(c, category, action, "success", message, resourceType, resourceID, detail)
+}
+
+// RecordFail is a shorthand for failed operations.
+func (s *Service) RecordFail(c *gin.Context, category, action, message string, detail map[string]interface{}) {
+	s.RecordAction(c, category, action, "failure", message, "", "", detail)
+}
diff --git a/internal/audit/retention.go b/internal/audit/retention.go
new file mode 100644
index 00000000..83ef05d1
--- /dev/null
+++ b/internal/audit/retention.go
@@ -0,0 +1,24 @@
+package audit
+
+import (
+	"time"
+
+	"go.uber.org/zap"
+)
+
+// StartRetentionLoop periodically purges expired audit rows.
+func StartRetentionLoop(s *Service, logger *zap.Logger) {
+	if s == nil {
+		return
+	}
+	go func() {
+		ticker := time.NewTicker(24 * time.Hour)
+		defer ticker.Stop()
+		for range ticker.C {
+			s.PurgeExpired()
+			if logger != nil {
+				logger.Debug("audit retention tick completed")
+			}
+		}
+	}()
+}
diff --git a/internal/audit/sanitize.go b/internal/audit/sanitize.go
new file mode 100644
index 00000000..34f2b439
--- /dev/null
+++ b/internal/audit/sanitize.go
@@ -0,0 +1,58 @@
+package audit
+
+import (
+	"encoding/json"
+	"strings"
+)
+
+var sensitiveKeySubstrings = []string{
+	"password", "api_key", "apikey", "secret", "token", "authorization",
+	"credential", "private_key", "access_key",
+}
+
+// SanitizeDetail redacts sensitive keys and truncates serialized size.
+func SanitizeDetail(detail map[string]interface{}, maxBytes int) map[string]interface{} {
+	if detail == nil {
+		return nil
+	}
+	if maxBytes <= 0 {
+		maxBytes = 8192
+	}
+	out := sanitizeValue("", detail)
+	if m, ok := out.(map[string]interface{}); ok {
+		b, _ := json.Marshal(m)
+		if len(b) > maxBytes {
+			return map[string]interface{}{
+				"_truncated": true,
+				"_preview":   string(b[:maxBytes]),
+			}
+		}
+		return m
+	}
+	return map[string]interface{}{"value": out}
+}
+
+func sanitizeValue(key string, v interface{}) interface{} {
+	kl := strings.ToLower(key)
+	for _, sub := range sensitiveKeySubstrings {
+		if strings.Contains(kl, sub) {
+			return "***"
+		}
+	}
+	switch t := v.(type) {
+	case map[string]interface{}:
+		m := make(map[string]interface{}, len(t))
+		for k, val := range t {
+			m[k] = sanitizeValue(k, val)
+		}
+		return m
+	case []interface{}:
+		arr := make([]interface{}, len(t))
+		for i, val := range t {
+			arr[i] = sanitizeValue(key, val)
+		}
+		return arr
+	default:
+		return v
+	}
+}
diff --git a/internal/audit/service.go b/internal/audit/service.go
new file mode 100644
index 00000000..eb537f33
--- /dev/null
+++ b/internal/audit/service.go
@@ -0,0 +1,166 @@
+package audit
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"strings"
+	"time"
+
+	"cyberstrike-ai/internal/config"
+	"cyberstrike-ai/internal/database"
+	"cyberstrike-ai/internal/security"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"go.uber.org/zap"
+)
+
+// Service persists platform audit logs.
+type Service struct {
+	db           *database.DB
+	cfg          *config.Config
+	logger       *zap.Logger
+	failThrottle *failureThrottle
+}
+
+// NewService creates an audit service.
+func NewService(db *database.DB, cfg *config.Config, logger *zap.Logger) *Service {
+	return &Service{
+		db:           db,
+		cfg:          cfg,
+		logger:       logger,
+		failThrottle: newFailureThrottle(),
+	}
+}
+
+// Enabled reports whether audit persistence is on.
+func (s *Service) Enabled() bool {
+	if s == nil || s.cfg == nil {
+		return false
+	}
+	return s.cfg.Audit.EnabledEffective()
+}
+
+// Record writes one audit row from a Gin request context.
+func (s *Service) Record(c *gin.Context, e Entry) {
+	if s == nil || !s.Enabled() || s.db == nil {
+		return
+	}
+	if strings.TrimSpace(e.Category) == "" || strings.TrimSpace(e.Action) == "" {
+		return
+	}
+	if e.Result == "failure" && !s.allowFailureAudit(c, e) {
+		return
+	}
+	if strings.TrimSpace(e.Result) == "" {
+		e.Result = "success"
+	}
+	if strings.TrimSpace(e.Level) == "" {
+		if e.Result == "failure" {
+			e.Level = "warn"
+		} else {
+			e.Level = "info"
+		}
+	}
+	if strings.TrimSpace(e.Actor) == "" {
+		e.Actor = "admin"
+	}
+	if e.SessionHint == "" && c != nil {
+		if token := c.GetString(security.ContextAuthTokenKey); token != "" {
+			e.SessionHint = sessionHint(token)
+		}
+	}
+	maxDetail := s.cfg.Audit.MaxDetailBytesEffective()
+	detail := SanitizeDetail(e.Detail, maxDetail)
+
+	row := &database.AuditLog{
+		ID:           "audit_" + strings.ReplaceAll(uuid.New().String(), "-", ""),
+		CreatedAt:    time.Now(),
+		Level:        e.Level,
+		Category:     e.Category,
+		Action:       e.Action,
+		Result:       e.Result,
+		Actor:        e.Actor,
+		SessionHint:  e.SessionHint,
+		ClientIP:     clientIP(c),
+		UserAgent:    userAgent(c),
+		ResourceType: e.ResourceType,
+		ResourceID:   e.ResourceID,
+		Message:      e.Message,
+		Detail:       detail,
+	}
+	if err := s.db.AppendAuditLog(row); err != nil && s.logger != nil {
+		s.logger.Warn("写入审计日志失败",
+			zap.String("action", e.Action),
+			zap.Error(err),
+		)
+	}
+}
+
+// RecordSystem writes an audit row without HTTP context (e.g. retention cleanup).
+func (s *Service) RecordSystem(e Entry) {
+	s.Record(nil, e)
+}
+
+// PurgeExpired deletes rows older than retention_days when configured.
+func (s *Service) PurgeExpired() {
+	if s == nil || s.db == nil || s.cfg == nil {
+		return
+	}
+	days := s.cfg.Audit.RetentionDaysEffective()
+	if days <= 0 {
+		return
+	}
+	cutoff := time.Now().AddDate(0, 0, -days)
+	n, err := s.db.DeleteAuditLogsBefore(cutoff)
+	if err != nil {
+		if s.logger != nil {
+			s.logger.Warn("清理过期审计日志失败", zap.Error(err))
+		}
+		return
+	}
+	if n > 0 && s.logger != nil {
+		s.logger.Info("已清理过期审计日志", zap.Int64("deleted", n))
+	}
+}
+
+// HintFromToken returns a short stable hash prefix for a session token.
+func HintFromToken(token string) string {
+	return sessionHint(token)
+}
+
+func sessionHint(token string) string {
+	token = strings.TrimSpace(token)
+	if token == "" {
+		return ""
+	}
+	sum := sha256.Sum256([]byte(token))
+	return hex.EncodeToString(sum[:4])
+}
+
+func (s *Service) allowFailureAudit(c *gin.Context, e Entry) bool {
+	if !isAuthFailureThrottled(e.Category, e.Action) {
+		return true
+	}
+	cooldown := time.Duration(s.cfg.Audit.AuthFailureCooldownEffective()) * time.Second
+	key := authFailureThrottleKey(e.Category, e.Action, clientIP(c))
+	return s.failThrottle.allow(key, cooldown)
+}
+
+func clientIP(c *gin.Context) string {
+	if c == nil {
+		return ""
+	}
+	return c.ClientIP()
+}
+
+func userAgent(c *gin.Context) string {
+	if c == nil {
+		return ""
+	}
+	ua := c.GetHeader("User-Agent")
+	if len(ua) > 512 {
+		return ua[:512]
+	}
+	return ua
+}
diff --git a/internal/audit/throttle.go b/internal/audit/throttle.go
new file mode 100644
index 00000000..7364e07d
--- /dev/null
+++ b/internal/audit/throttle.go
@@ -0,0 +1,55 @@
+package audit
+
+import (
+	"sync"
+	"time"
+)
+
+// failureThrottle deduplicates high-frequency failure audit rows (e.g. wrong password).
+type failureThrottle struct {
+	mu   sync.Mutex
+	last map[string]time.Time
+}
+
+func newFailureThrottle() *failureThrottle {
+	return &failureThrottle{last: make(map[string]time.Time)}
+}
+
+// allow reports whether a row with the given key may be written now.
+func (t *failureThrottle) allow(key string, cooldown time.Duration) bool {
+	if t == nil || cooldown <= 0 || key == "" {
+		return true
+	}
+	now := time.Now()
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	if prev, ok := t.last[key]; ok && now.Sub(prev) < cooldown {
+		return false
+	}
+	t.last[key] = now
+	if len(t.last) > 4096 {
+		for k, ts := range t.last {
+			if now.Sub(ts) > cooldown*2 {
+				delete(t.last, k)
+			}
+		}
+	}
+	return true
+}
+
+// authFailureThrottleKey builds a per-IP key for auth failure deduplication.
+func authFailureThrottleKey(category, action, clientIP string) string {
+	return category + ":" + action + ":" + clientIP
+}
+
+func isAuthFailureThrottled(category, action string) bool {
+	if category != "auth" {
+		return false
+	}
+	switch action {
+	case "login", "change_password":
+		return true
+	default:
+		return false
+	}
+}
diff --git a/internal/audit/types.go b/internal/audit/types.go
new file mode 100644
index 00000000..7876e2f7
--- /dev/null
+++ b/internal/audit/types.go
@@ -0,0 +1,15 @@
+package audit
+
+// Entry describes one platform audit record (not chat/tool execution bodies).
+type Entry struct {
+	Level        string
+	Category     string
+	Action       string
+	Result       string // success | failure
+	Actor        string
+	SessionHint  string
+	ResourceType string
+	ResourceID   string
+	Message      string
+	Detail       map[string]interface{}
+}
diff --git a/internal/handler/agent.go b/internal/handler/agent.go
index 4af89989..e285e7f7 100644
--- a/internal/handler/agent.go
+++ b/internal/handler/agent.go
@@ -17,6 +17,7 @@ import (
 	"unicode/utf8"
 
 	"cyberstrike-ai/internal/agent"
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/config"
 	"cyberstrike-ai/internal/database"
 	"cyberstrike-ai/internal/reasoning"
@@ -131,6 +132,12 @@ type AgentHandler struct {
 	batchRunning      map[string]struct{}
 	// hitlWhitelistSaver 侧栏「应用」HITL 时将会话增量白名单合并写入 config.yaml（可选）
 	hitlWhitelistSaver HitlToolWhitelistSaver
+	audit              *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *AgentHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // HitlToolWhitelistSaver 合并 HITL 免审批工具到全局配置并落盘
@@ -2039,6 +2046,11 @@ func (h *AgentHandler) CreateBatchQueue(c *gin.Context) {
 			queue = refreshed
 		}
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "task", "create_queue", "创建批量任务队列", "batch_queue", queue.ID, map[string]interface{}{
+			"task_count": len(validTasks), "started": started,
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"queueId": queue.ID,
 		"queue":   queue,
@@ -2146,6 +2158,9 @@ func (h *AgentHandler) StartBatchQueue(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "队列不存在"})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "task", "start_queue", "启动批量任务队列", "batch_queue", queueID, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "批量任务已开始执行", "queueId": queueID})
 }
 
@@ -2174,6 +2189,9 @@ func (h *AgentHandler) RerunBatchQueue(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "启动失败"})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "task", "rerun_queue", "重跑批量任务队列", "batch_queue", queueID, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "批量任务已重新开始执行", "queueId": queueID})
 }
 
@@ -2185,6 +2203,9 @@ func (h *AgentHandler) PauseBatchQueue(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "队列不存在或无法暂停"})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "task", "pause_queue", "暂停批量任务队列", "batch_queue", queueID, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "批量任务已暂停"})
 }
 
@@ -2280,6 +2301,16 @@ func (h *AgentHandler) DeleteBatchQueue(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "队列不存在"})
 		return
 	}
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category:     "task",
+			Action:       "delete_queue",
+			Result:       "success",
+			ResourceType: "batch_queue",
+			ResourceID:   queueID,
+			Message:      "删除批量任务队列",
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "批量任务队列已删除"})
 }
 
@@ -2365,6 +2396,11 @@ func (h *AgentHandler) DeleteBatchTask(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"error": "队列不存在"})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "task", "delete_batch_task", "删除批量子任务", "batch_task", taskID, map[string]interface{}{
+			"batch_queue_id": queueID,
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "任务已删除", "queue": queue})
 }
 
diff --git a/internal/handler/audit.go b/internal/handler/audit.go
new file mode 100644
index 00000000..5649324b
--- /dev/null
+++ b/internal/handler/audit.go
@@ -0,0 +1,146 @@
+package handler
+
+import (
+	"net/http"
+	"time"
+
+	"cyberstrike-ai/internal/audit"
+	"cyberstrike-ai/internal/database"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+)
+
+// AuditHandler serves platform audit log APIs.
+type AuditHandler struct {
+	db     *database.DB
+	audit  *audit.Service
+	logger *zap.Logger
+}
+
+// NewAuditHandler creates an audit log handler.
+func NewAuditHandler(db *database.DB, auditSvc *audit.Service, logger *zap.Logger) *AuditHandler {
+	return &AuditHandler{db: db, audit: auditSvc, logger: logger}
+}
+
+// Meta GET /api/audit/meta
+func (h *AuditHandler) Meta(c *gin.Context) {
+	enabled := false
+	retentionDays := 0
+	if h.audit != nil {
+		enabled = h.audit.Enabled()
+		retentionDays = h.audit.RetentionDays()
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"enabled":        enabled,
+		"retention_days": retentionDays,
+		"default_page_size": 20,
+		"max_page_size":     100,
+		"max_export":        5000,
+	})
+}
+
+// Summary GET /api/audit/summary
+func (h *AuditHandler) Summary(c *gin.Context) {
+	if h.db == nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "database unavailable"})
+		return
+	}
+	base := auditFilterFromQuery(c)
+	total, err := h.db.CountAuditLogs(base)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	failFilter := base
+	failFilter.Result = "failure"
+	failures, err := h.db.CountAuditLogs(failFilter)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	since := time.Now().AddDate(0, 0, -7)
+	recentFilter := base
+	recentFilter.Since = &since
+	recent7d, err := h.db.CountAuditLogs(recentFilter)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"total":       total,
+		"failures":    failures,
+		"recent_7d":   recent7d,
+		"has_filters": c.Query("category") != "" || c.Query("action") != "" || c.Query("result") != "" ||
+			c.Query("q") != "" || c.Query("since") != "" || c.Query("until") != "",
+	})
+}
+
+// ListLogs GET /api/audit/logs
+func (h *AuditHandler) ListLogs(c *gin.Context) {
+	if h.db == nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "database unavailable"})
+		return
+	}
+	filter := auditFilterFromQuery(c)
+	page, pageSize := auditPaginationFromQuery(c)
+	filter.Limit = pageSize
+	filter.Offset = (page - 1) * pageSize
+
+	logs, err := h.db.ListAuditLogs(filter)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	total, err := h.db.CountAuditLogs(filter)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"logs":      logs,
+		"total":     total,
+		"page":      page,
+		"page_size": pageSize,
+	})
+}
+
+// GetLog GET /api/audit/logs/:id
+func (h *AuditHandler) GetLog(c *gin.Context) {
+	if h.db == nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "database unavailable"})
+		return
+	}
+	row, err := h.db.GetAuditLogByID(c.Param("id"))
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "审计记录不存在"})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"log": row})
+}
+
+// ExportLogs GET /api/audit/logs/export — JSON or CSV (?format=csv), max 5000 rows.
+func (h *AuditHandler) ExportLogs(c *gin.Context) {
+	if h.db == nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "database unavailable"})
+		return
+	}
+	filter := auditFilterFromQuery(c)
+	filter.Limit = 5000
+	filter.Offset = 0
+
+	logs, err := h.db.ListAuditLogs(filter)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	if c.Query("format") == "csv" {
+		writeAuditLogsCSV(c, logs)
+		return
+	}
+	c.Header("Content-Disposition", `attachment; filename="audit-logs.json"`)
+	c.JSON(http.StatusOK, gin.H{
+		"exported_at": time.Now().UTC().Format(time.RFC3339),
+		"logs":        logs,
+	})
+}
diff --git a/internal/handler/audit_export_csv.go b/internal/handler/audit_export_csv.go
new file mode 100644
index 00000000..debf10c9
--- /dev/null
+++ b/internal/handler/audit_export_csv.go
@@ -0,0 +1,42 @@
+package handler
+
+import (
+	"encoding/csv"
+	"fmt"
+	"time"
+
+	"cyberstrike-ai/internal/database"
+
+	"github.com/gin-gonic/gin"
+)
+
+func writeAuditLogsCSV(c *gin.Context, logs []*database.AuditLog) {
+	c.Header("Content-Type", "text/csv; charset=utf-8")
+	c.Header("Content-Disposition", fmt.Sprintf(`attachment; filename="audit-logs-%s.csv"`, time.Now().Format("20060102")))
+
+	w := csv.NewWriter(c.Writer)
+	_ = w.Write([]string{
+		"id", "created_at", "level", "category", "action", "result", "actor",
+		"session_hint", "client_ip", "resource_type", "resource_id", "message",
+	})
+	for _, row := range logs {
+		if row == nil {
+			continue
+		}
+		_ = w.Write([]string{
+			row.ID,
+			row.CreatedAt.UTC().Format(time.RFC3339),
+			row.Level,
+			row.Category,
+			row.Action,
+			row.Result,
+			row.Actor,
+			row.SessionHint,
+			row.ClientIP,
+			row.ResourceType,
+			row.ResourceID,
+			row.Message,
+		})
+	}
+	w.Flush()
+}
diff --git a/internal/handler/audit_query.go b/internal/handler/audit_query.go
new file mode 100644
index 00000000..ba097c03
--- /dev/null
+++ b/internal/handler/audit_query.go
@@ -0,0 +1,48 @@
+package handler
+
+import (
+	"strconv"
+	"time"
+
+	"cyberstrike-ai/internal/database"
+
+	"github.com/gin-gonic/gin"
+)
+
+func auditFilterFromQuery(c *gin.Context) database.ListAuditLogsFilter {
+	filter := database.ListAuditLogsFilter{
+		Level:        c.Query("level"),
+		Category:     c.Query("category"),
+		Action:       c.Query("action"),
+		Result:       c.Query("result"),
+		Query:        c.Query("q"),
+		ResourceType: c.Query("resource_type"),
+		ResourceID:   c.Query("resource_id"),
+	}
+	if since := c.Query("since"); since != "" {
+		if t, err := time.Parse(time.RFC3339, since); err == nil {
+			filter.Since = &t
+		}
+	}
+	if until := c.Query("until"); until != "" {
+		if t, err := time.Parse(time.RFC3339, until); err == nil {
+			filter.Until = &t
+		}
+	}
+	return filter
+}
+
+func auditPaginationFromQuery(c *gin.Context) (page, pageSize int) {
+	page = 1
+	pageSize = 20
+	if p, err := strconv.Atoi(c.DefaultQuery("page", "1")); err == nil && p > 0 {
+		page = p
+	}
+	if ps, err := strconv.Atoi(c.DefaultQuery("page_size", "20")); err == nil && ps > 0 {
+		pageSize = ps
+		if pageSize > 100 {
+			pageSize = 100
+		}
+	}
+	return page, pageSize
+}
diff --git a/internal/handler/auth.go b/internal/handler/auth.go
index 508553c1..a0e940d2 100644
--- a/internal/handler/auth.go
+++ b/internal/handler/auth.go
@@ -5,6 +5,7 @@ import (
 	"strings"
 	"time"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/config"
 	"cyberstrike-ai/internal/security"
 
@@ -18,6 +19,12 @@ type AuthHandler struct {
 	config     *config.Config
 	configPath string
 	logger     *zap.Logger
+	audit      *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *AuthHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewAuthHandler creates a new AuthHandler.
@@ -49,10 +56,32 @@ func (h *AuthHandler) Login(c *gin.Context) {
 
 	token, expiresAt, err := h.manager.Authenticate(req.Password)
 	if err != nil {
+		if h.audit != nil {
+			h.audit.Record(c, audit.Entry{
+				Level:    "warn",
+				Category: "auth",
+				Action:   "login",
+				Result:   "failure",
+				Message:  "登录失败：密码错误",
+			})
+		}
 		c.JSON(http.StatusUnauthorized, gin.H{"error": "密码错误"})
 		return
 	}
 
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category:    "auth",
+			Action:      "login",
+			Result:      "success",
+			SessionHint: audit.HintFromToken(token),
+			Message:     "登录成功",
+			Detail: map[string]interface{}{
+				"expires_at": expiresAt.UTC().Format(time.RFC3339),
+			},
+		})
+	}
+
 	c.JSON(http.StatusOK, gin.H{
 		"token":               token,
 		"expires_at":          expiresAt.UTC().Format(time.RFC3339),
@@ -73,6 +102,14 @@ func (h *AuthHandler) Logout(c *gin.Context) {
 	}
 
 	h.manager.RevokeToken(token)
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category: "auth",
+			Action:   "logout",
+			Result:   "success",
+			Message:  "退出登录",
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "已退出登录"})
 }
 
@@ -103,6 +140,15 @@ func (h *AuthHandler) ChangePassword(c *gin.Context) {
 	}
 
 	if !h.manager.CheckPassword(oldPassword) {
+		if h.audit != nil {
+			h.audit.Record(c, audit.Entry{
+				Level:    "warn",
+				Category: "auth",
+				Action:   "change_password",
+				Result:   "failure",
+				Message:  "修改密码失败：当前密码不正确",
+			})
+		}
 		c.JSON(http.StatusBadRequest, gin.H{"error": "当前密码不正确"})
 		return
 	}
@@ -132,6 +178,15 @@ func (h *AuthHandler) ChangePassword(c *gin.Context) {
 		h.logger.Info("登录密码已更新，所有会话已失效")
 	}
 
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category: "auth",
+			Action:   "change_password",
+			Result:   "success",
+			Message:  "登录密码已修改",
+		})
+	}
+
 	c.JSON(http.StatusOK, gin.H{"message": "密码已更新，请使用新密码重新登录"})
 }
 
diff --git a/internal/handler/c2.go b/internal/handler/c2.go
index 22639b50..78d48b32 100644
--- a/internal/handler/c2.go
+++ b/internal/handler/c2.go
@@ -13,6 +13,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/c2"
 	"cyberstrike-ai/internal/database"
 
@@ -25,6 +26,12 @@ import (
 type C2Handler struct {
 	mgrPtr atomic.Pointer[c2.Manager]
 	logger *zap.Logger
+	audit  *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *C2Handler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewC2Handler 创建 C2 处理器；manager 可为 nil（功能关闭时）
@@ -104,6 +111,11 @@ func (h *C2Handler) CreateListener(c *gin.Context) {
 	implantToken := listener.ImplantToken
 	listener.EncryptionKey = ""
 	listener.ImplantToken = ""
+	if h.audit != nil {
+		h.audit.RecordOK(c, "c2", "listener_create", "创建 C2 监听器", "c2_listener", listener.ID, map[string]interface{}{
+			"name": listener.Name, "bind": listener.BindHost, "port": listener.BindPort,
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"listener": listener, "implant_token": implantToken})
 }
 
@@ -205,6 +217,9 @@ func (h *C2Handler) DeleteListener(c *gin.Context) {
 		c.JSON(code, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "c2", "listener_delete", "删除 C2 监听器", "c2_listener", id, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"deleted": true})
 }
 
@@ -222,6 +237,9 @@ func (h *C2Handler) StartListener(c *gin.Context) {
 	}
 	listener.EncryptionKey = ""
 	listener.ImplantToken = ""
+	if h.audit != nil {
+		h.audit.RecordOK(c, "c2", "listener_start", "启动 C2 监听器", "c2_listener", id, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"listener": listener})
 }
 
@@ -236,6 +254,9 @@ func (h *C2Handler) StopListener(c *gin.Context) {
 		c.JSON(code, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "c2", "listener_stop", "停止 C2 监听器", "c2_listener", id, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"stopped": true})
 }
 
@@ -297,6 +318,9 @@ func (h *C2Handler) DeleteSession(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "c2", "session_delete", "删除 C2 会话", "c2_session", id, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"deleted": true})
 }
 
@@ -407,6 +431,11 @@ func (h *C2Handler) DeleteTasks(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "c2", "task_delete", "批量删除 C2 任务", "c2_task", "", map[string]interface{}{
+			"count": n, "ids": req.IDs,
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"deleted": n})
 }
 
@@ -457,6 +486,11 @@ func (h *C2Handler) CreateTask(c *gin.Context) {
 		c.JSON(code, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "c2", "task_create", "创建 C2 任务", "c2_task", task.ID, map[string]interface{}{
+			"session_id": req.SessionID, "task_type": req.TaskType,
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"task": task})
 }
 
@@ -471,6 +505,9 @@ func (h *C2Handler) CancelTask(c *gin.Context) {
 		c.JSON(code, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "c2", "task_cancel", "取消 C2 任务", "c2_task", id, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"cancelled": true})
 }
 
diff --git a/internal/handler/chat_uploads.go b/internal/handler/chat_uploads.go
index c3e25fec..7ca91ebc 100644
--- a/internal/handler/chat_uploads.go
+++ b/internal/handler/chat_uploads.go
@@ -12,6 +12,8 @@ import (
 	"time"
 	"unicode/utf8"
 
+	"cyberstrike-ai/internal/audit"
+
 	"github.com/gin-gonic/gin"
 	"go.uber.org/zap"
 )
@@ -24,6 +26,12 @@ const (
 // ChatUploadsHandler 对话中上传附件（chat_uploads 目录）的管理 API
 type ChatUploadsHandler struct {
 	logger *zap.Logger
+	audit  *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *ChatUploadsHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewChatUploadsHandler 创建处理器
@@ -230,6 +238,9 @@ func (h *ChatUploadsHandler) Delete(c *gin.Context) {
 			return
 		}
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "file", "delete", "删除对话附件", "chat_upload", body.Path, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"ok": true})
 }
 
@@ -503,6 +514,11 @@ func (h *ChatUploadsHandler) Upload(c *gin.Context) {
 	}
 	rel, _ := filepath.Rel(root, fullPath)
 	absSaved, _ := filepath.Abs(fullPath)
+	if h.audit != nil {
+		h.audit.RecordOK(c, "file", "upload", "上传对话附件", "chat_upload", filepath.ToSlash(rel), map[string]interface{}{
+			"name": unique,
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"ok":           true,
 		"relativePath": filepath.ToSlash(rel),
diff --git a/internal/handler/config.go b/internal/handler/config.go
index f2892aea..21239f7d 100644
--- a/internal/handler/config.go
+++ b/internal/handler/config.go
@@ -14,6 +14,7 @@ import (
 	"time"
 
 	"cyberstrike-ai/internal/agents"
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/config"
 	"cyberstrike-ai/internal/knowledge"
 	"cyberstrike-ai/internal/mcp"
@@ -87,6 +88,7 @@ type ConfigHandler struct {
 	knowledgeInitializer       KnowledgeInitializer       // 知识库初始化器（可选）
 	appUpdater                 AppUpdater                 // App更新器（可选）
 	robotRestarter             RobotRestarter             // 机器人连接重启器（可选），ApplyConfig 时重启钉钉/飞书
+	audit                      *audit.Service
 	logger                     *zap.Logger
 	mu                         sync.RWMutex
 	lastEmbeddingConfig        *config.EmbeddingConfig // 上一次的嵌入模型配置（用于检测变更）
@@ -206,6 +208,13 @@ func (h *ConfigHandler) SetRobotRestarter(restarter RobotRestarter) {
 	h.robotRestarter = restarter
 }
 
+// SetAudit wires platform audit logging.
+func (h *ConfigHandler) SetAudit(s *audit.Service) {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	h.audit = s
+}
+
 // ApplyWechatRobotBinding 微信 iLink 扫码绑定成功后写入配置并重启机器人连接
 func (h *ConfigHandler) ApplyWechatRobotBinding(wc config.RobotWechatConfig) error {
 	h.mu.Lock()
@@ -903,6 +912,9 @@ func (h *ConfigHandler) UpdateConfig(c *gin.Context) {
 		return
 	}
 
+	if h.audit != nil {
+		h.audit.RecordOK(c, "config", "update", "更新内存配置", "config", "", nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "配置已更新"})
 }
 
@@ -1033,6 +1045,9 @@ func (h *ConfigHandler) ApplyConfig(c *gin.Context) {
 		h.logger.Info("检测到知识库从禁用变为启用，开始动态初始化知识库组件")
 		if _, err := knowledgeInitializer(); err != nil {
 			h.logger.Error("动态初始化知识库失败", zap.Error(err))
+			if h.audit != nil {
+				h.audit.RecordFail(c, "config", "apply", "应用配置失败：初始化知识库", map[string]interface{}{"error": err.Error()})
+			}
 			c.JSON(http.StatusInternalServerError, gin.H{"error": "初始化知识库失败: " + err.Error()})
 			return
 		}
@@ -1067,6 +1082,9 @@ func (h *ConfigHandler) ApplyConfig(c *gin.Context) {
 		h.logger.Info("开始重新初始化知识库组件（嵌入模型配置已变更）")
 		if _, err := reinitKnowledgeInitializer(); err != nil {
 			h.logger.Error("重新初始化知识库失败", zap.Error(err))
+			if h.audit != nil {
+				h.audit.RecordFail(c, "config", "apply", "应用配置失败：重新初始化知识库", map[string]interface{}{"error": err.Error()})
+			}
 			c.JSON(http.StatusInternalServerError, gin.H{"error": "重新初始化知识库失败: " + err.Error()})
 			return
 		}
@@ -1080,6 +1098,9 @@ func (h *ConfigHandler) ApplyConfig(c *gin.Context) {
 	if c2Rt != nil {
 		if err := c2Rt.ReconcileC2AfterConfigApply(); err != nil {
 			h.logger.Error("C2 配置应用失败", zap.Error(err))
+			if h.audit != nil {
+				h.audit.RecordFail(c, "config", "apply", "应用配置失败：C2", map[string]interface{}{"error": err.Error()})
+			}
 			c.JSON(http.StatusInternalServerError, gin.H{"error": "C2 启动失败: " + err.Error()})
 			return
 		}
@@ -1221,6 +1242,20 @@ func (h *ConfigHandler) ApplyConfig(c *gin.Context) {
 		zap.Int("tools_count", len(h.config.Security.Tools)),
 	)
 
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category: "config",
+			Action:   "apply",
+			Result:   "success",
+			Message:  "配置已应用",
+			Detail: map[string]interface{}{
+				"tools_count":      len(h.config.Security.Tools),
+				"knowledge_enabled": h.config.Knowledge.Enabled,
+				"c2_enabled":        h.config.C2.EnabledEffective(),
+			},
+		})
+	}
+
 	c.JSON(http.StatusOK, gin.H{
 		"message":     "配置已应用",
 		"tools_count": len(h.config.Security.Tools),
diff --git a/internal/handler/conversation.go b/internal/handler/conversation.go
index 2bb5c920..840b31e0 100644
--- a/internal/handler/conversation.go
+++ b/internal/handler/conversation.go
@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"strconv"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/database"
 	"github.com/gin-gonic/gin"
 	"go.uber.org/zap"
@@ -14,6 +15,12 @@ import (
 type ConversationHandler struct {
 	db     *database.DB
 	logger *zap.Logger
+	audit  *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *ConversationHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewConversationHandler 创建新的对话处理器
@@ -189,6 +196,17 @@ func (h *ConversationHandler) DeleteConversation(c *gin.Context) {
 		return
 	}
 
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category:     "conversation",
+			Action:       "delete",
+			Result:       "success",
+			ResourceType: "conversation",
+			ResourceID:   id,
+			Message:      "删除对话",
+		})
+	}
+
 	c.JSON(http.StatusOK, gin.H{"message": "删除成功"})
 }
 
@@ -227,6 +245,12 @@ func (h *ConversationHandler) DeleteConversationTurn(c *gin.Context) {
 		return
 	}
 
+	if h.audit != nil {
+		h.audit.RecordOK(c, "conversation", "delete_turn", "删除对话轮次", "conversation", conversationID, map[string]interface{}{
+			"message_id": req.MessageID,
+			"deleted":    len(deletedIDs),
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"deletedMessageIds": deletedIDs,
 		"message":           "ok",
diff --git a/internal/handler/external_mcp.go b/internal/handler/external_mcp.go
index e1fcab1e..662b7463 100644
--- a/internal/handler/external_mcp.go
+++ b/internal/handler/external_mcp.go
@@ -6,6 +6,7 @@ import (
 	"os"
 	"sync"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/config"
 	"cyberstrike-ai/internal/mcp"
 
@@ -20,9 +21,15 @@ type ExternalMCPHandler struct {
 	config     *config.Config
 	configPath string
 	logger     *zap.Logger
+	audit      *audit.Service
 	mu         sync.RWMutex
 }
 
+// SetAudit wires platform audit logging.
+func (h *ExternalMCPHandler) SetAudit(s *audit.Service) {
+	h.audit = s
+}
+
 // NewExternalMCPHandler 创建外部MCP处理器
 func NewExternalMCPHandler(manager *mcp.ExternalMCPManager, cfg *config.Config, configPath string, logger *zap.Logger) *ExternalMCPHandler {
 	return &ExternalMCPHandler{
@@ -180,6 +187,16 @@ func (h *ExternalMCPHandler) AddOrUpdateExternalMCP(c *gin.Context) {
 	}
 
 	h.logger.Info("外部MCP配置已更新", zap.String("name", name))
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category:     "external_mcp",
+			Action:       "upsert",
+			Result:       "success",
+			ResourceType: "external_mcp",
+			ResourceID:   name,
+			Message:      "更新外部 MCP 配置",
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "配置已更新"})
 }
 
@@ -209,6 +226,16 @@ func (h *ExternalMCPHandler) DeleteExternalMCP(c *gin.Context) {
 	}
 
 	h.logger.Info("外部MCP配置已删除", zap.String("name", name))
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category:     "external_mcp",
+			Action:       "delete",
+			Result:       "success",
+			ResourceType: "external_mcp",
+			ResourceID:   name,
+			Message:      "删除外部 MCP 配置",
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "配置已删除"})
 }
 
diff --git a/internal/handler/hitl.go b/internal/handler/hitl.go
index 8d6e3469..96fc9fa9 100644
--- a/internal/handler/hitl.go
+++ b/internal/handler/hitl.go
@@ -616,6 +616,11 @@ func (h *AgentHandler) DecideHITLInterrupt(c *gin.Context) {
 		c.JSON(http.StatusConflict, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "hitl", "decision", "HITL 审批决策", "hitl_interrupt", req.InterruptID, map[string]interface{}{
+			"decision": req.Decision,
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{"ok": true})
 }
 
diff --git a/internal/handler/knowledge.go b/internal/handler/knowledge.go
index 76d7b974..eee106ac 100644
--- a/internal/handler/knowledge.go
+++ b/internal/handler/knowledge.go
@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"time"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/database"
 	"cyberstrike-ai/internal/knowledge"
 
@@ -20,6 +21,12 @@ type KnowledgeHandler struct {
 	indexer   *knowledge.Indexer
 	db        *database.DB
 	logger    *zap.Logger
+	audit     *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *KnowledgeHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewKnowledgeHandler 创建新的知识库处理器
@@ -303,6 +310,9 @@ func (h *KnowledgeHandler) DeleteItem(c *gin.Context) {
 		return
 	}
 
+	if h.audit != nil {
+		h.audit.RecordOK(c, "knowledge", "item_delete", "删除知识项", "knowledge_item", id, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "删除成功"})
 }
 
@@ -316,6 +326,9 @@ func (h *KnowledgeHandler) RebuildIndex(c *gin.Context) {
 		}
 	}()
 
+	if h.audit != nil {
+		h.audit.RecordOK(c, "knowledge", "index_rebuild", "重建知识库索引", "knowledge", "", nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "索引重建已开始，将在后台进行"})
 }
 
diff --git a/internal/handler/markdown_agents.go b/internal/handler/markdown_agents.go
index bc7abb47..70ba216d 100644
--- a/internal/handler/markdown_agents.go
+++ b/internal/handler/markdown_agents.go
@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"cyberstrike-ai/internal/agents"
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/config"
 
 	"github.com/gin-gonic/gin"
@@ -18,7 +19,8 @@ var markdownAgentFilenameRe = regexp.MustCompile(`^[a-zA-Z0-9][a-zA-Z0-9_.-]*\.m
 
 // MarkdownAgentsHandler 管理 agents 目录下子代理 Markdown（增删改查）。
 type MarkdownAgentsHandler struct {
-	dir string
+	dir   string
+	audit *audit.Service
 }
 
 // NewMarkdownAgentsHandler dir 须为已解析的绝对路径。
@@ -26,6 +28,11 @@ func NewMarkdownAgentsHandler(dir string) *MarkdownAgentsHandler {
 	return &MarkdownAgentsHandler{dir: strings.TrimSpace(dir)}
 }
 
+// SetAudit wires platform audit logging.
+func (h *MarkdownAgentsHandler) SetAudit(s *audit.Service) {
+	h.audit = s
+}
+
 func (h *MarkdownAgentsHandler) safeJoin(filename string) (string, error) {
 	filename = strings.TrimSpace(filename)
 	if filename == "" || !markdownAgentFilenameRe.MatchString(filename) {
@@ -227,6 +234,9 @@ func (h *MarkdownAgentsHandler) CreateMarkdownAgent(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "agent", "markdown_create", "创建 Markdown 子代理", "markdown_agent", filepath.Base(path), nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"filename": filepath.Base(path), "message": "已创建"})
 }
 
@@ -294,6 +304,9 @@ func (h *MarkdownAgentsHandler) UpdateMarkdownAgent(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "agent", "markdown_update", "更新 Markdown 子代理", "markdown_agent", filename, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "已保存"})
 }
 
@@ -313,5 +326,8 @@ func (h *MarkdownAgentsHandler) DeleteMarkdownAgent(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "agent", "markdown_delete", "删除 Markdown 子代理", "markdown_agent", filename, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"message": "已删除"})
 }
diff --git a/internal/handler/monitor.go b/internal/handler/monitor.go
index a9ba7119..334494f9 100644
--- a/internal/handler/monitor.go
+++ b/internal/handler/monitor.go
@@ -9,6 +9,7 @@ import (
 	"strings"
 	"time"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/database"
 	"cyberstrike-ai/internal/mcp"
 	"cyberstrike-ai/internal/security"
@@ -23,6 +24,12 @@ type MonitorHandler struct {
 	executor       *security.Executor
 	db             *database.DB
 	logger         *zap.Logger
+	audit          *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *MonitorHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewMonitorHandler 创建新的监控处理器
@@ -365,6 +372,11 @@ func (h *MonitorHandler) DeleteExecution(c *gin.Context) {
 		}
 
 		h.logger.Info("执行记录已从数据库删除", zap.String("executionId", id), zap.String("toolName", exec.ToolName))
+		if h.audit != nil {
+			h.audit.RecordOK(c, "tool", "execution_delete", "删除工具执行记录", "tool_execution", id, map[string]interface{}{
+				"tool_name": exec.ToolName,
+			})
+		}
 		c.JSON(http.StatusOK, gin.H{"message": "执行记录已删除"})
 		return
 	}
@@ -440,6 +452,11 @@ func (h *MonitorHandler) DeleteExecutions(c *gin.Context) {
 		}
 
 		h.logger.Info("批量删除执行记录成功", zap.Int("count", len(request.IDs)))
+		if h.audit != nil {
+			h.audit.RecordOK(c, "tool", "execution_delete_batch", "批量删除工具执行记录", "tool_execution", "", map[string]interface{}{
+				"count": len(request.IDs),
+			})
+		}
 		c.JSON(http.StatusOK, gin.H{"message": "成功删除执行记录", "deleted": len(executions)})
 		return
 	}
diff --git a/internal/handler/role.go b/internal/handler/role.go
index 85411b19..1c061256 100644
--- a/internal/handler/role.go
+++ b/internal/handler/role.go
@@ -8,6 +8,7 @@ import (
 	"regexp"
 	"strings"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/config"
 
 	"gopkg.in/yaml.v3"
@@ -21,6 +22,12 @@ type RoleHandler struct {
 	config     *config.Config
 	configPath string
 	logger     *zap.Logger
+	audit      *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *RoleHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewRoleHandler 创建新的角色处理器
@@ -174,6 +181,9 @@ func (h *RoleHandler) UpdateRole(c *gin.Context) {
 	}
 
 	h.logger.Info("更新角色", zap.String("oldKey", roleName), zap.String("newKey", finalKey), zap.String("name", req.Name))
+	if h.audit != nil {
+		h.audit.RecordOK(c, "role", "update", "更新角色", "role", finalKey, map[string]interface{}{"name": req.Name})
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"message": "角色已更新",
 		"role":    req,
@@ -219,6 +229,9 @@ func (h *RoleHandler) CreateRole(c *gin.Context) {
 	}
 
 	h.logger.Info("创建角色", zap.String("roleName", req.Name))
+	if h.audit != nil {
+		h.audit.RecordOK(c, "role", "create", "创建角色", "role", req.Name, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"message": "角色已创建",
 		"role":    req,
@@ -287,6 +300,9 @@ func (h *RoleHandler) DeleteRole(c *gin.Context) {
 	}
 
 	h.logger.Info("删除角色", zap.String("roleName", roleName))
+	if h.audit != nil {
+		h.audit.RecordOK(c, "role", "delete", "删除角色", "role", roleName, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"message": "角色已删除",
 	})
diff --git a/internal/handler/skills.go b/internal/handler/skills.go
index 52f2dc99..4246c297 100644
--- a/internal/handler/skills.go
+++ b/internal/handler/skills.go
@@ -8,6 +8,7 @@ import (
 	"regexp"
 	"strings"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/config"
 	"cyberstrike-ai/internal/database"
 	"cyberstrike-ai/internal/skillpackage"
@@ -23,6 +24,12 @@ type SkillsHandler struct {
 	configPath string
 	logger     *zap.Logger
 	db         *database.DB // 数据库连接（遗留统计；MCP list/read 已移除）
+	audit      *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *SkillsHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewSkillsHandler 创建新的Skills处理器
@@ -365,6 +372,9 @@ func (h *SkillsHandler) CreateSkill(c *gin.Context) {
 	}
 
 	h.logger.Info("创建skill成功", zap.String("skill", req.Name))
+	if h.audit != nil {
+		h.audit.RecordOK(c, "skill", "create", "创建 Skill", "skill", req.Name, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"message": "skill已创建",
 		"skill": map[string]interface{}{
@@ -425,6 +435,9 @@ func (h *SkillsHandler) UpdateSkill(c *gin.Context) {
 	}
 
 	h.logger.Info("更新skill成功", zap.String("skill", skillName))
+	if h.audit != nil {
+		h.audit.RecordOK(c, "skill", "update", "更新 Skill", "skill", skillName, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"message": "skill已更新",
 	})
@@ -459,6 +472,11 @@ func (h *SkillsHandler) DeleteSkill(c *gin.Context) {
 	}
 
 	h.logger.Info("删除skill成功", zap.String("skill", skillName))
+	if h.audit != nil {
+		h.audit.RecordOK(c, "skill", "delete", "删除 Skill", "skill", skillName, map[string]interface{}{
+			"affected_roles": affectedRoles,
+		})
+	}
 	c.JSON(http.StatusOK, gin.H{
 		"message":        responseMsg,
 		"affected_roles": affectedRoles,
diff --git a/internal/handler/terminal.go b/internal/handler/terminal.go
index a17d361d..3c3c53fb 100644
--- a/internal/handler/terminal.go
+++ b/internal/handler/terminal.go
@@ -253,5 +253,5 @@ func (h *TerminalHandler) RunCommandStream(c *gin.Context) {
 		flusher.Flush()
 	}
 
-	runCommandStreamImpl(cmd, sendEvent, ctx)
+	_ = runCommandStreamImpl(cmd, sendEvent, ctx)
 }
diff --git a/internal/handler/terminal_stream_unix.go b/internal/handler/terminal_stream_unix.go
index 9b543b6c..e8ab8c47 100644
--- a/internal/handler/terminal_stream_unix.go
+++ b/internal/handler/terminal_stream_unix.go
@@ -15,11 +15,11 @@ const ptyCols = 256
 const ptyRows = 40
 
 // runCommandStreamImpl 在 Unix 下用 PTY 执行，使 ping 等命令按终端宽度排版（isatty 为真）
-func runCommandStreamImpl(cmd *exec.Cmd, sendEvent func(streamEvent), ctx context.Context) {
+func runCommandStreamImpl(cmd *exec.Cmd, sendEvent func(streamEvent), ctx context.Context) int {
 	ptmx, err := pty.StartWithSize(cmd, &pty.Winsize{Cols: ptyCols, Rows: ptyRows})
 	if err != nil {
 		sendEvent(streamEvent{T: "exit", C: -1})
-		return
+		return -1
 	}
 	defer ptmx.Close()
 
@@ -43,4 +43,5 @@ func runCommandStreamImpl(cmd *exec.Cmd, sendEvent func(streamEvent), ctx contex
 		exitCode = -1
 	}
 	sendEvent(streamEvent{T: "exit", C: exitCode})
+	return exitCode
 }
diff --git a/internal/handler/terminal_stream_windows.go b/internal/handler/terminal_stream_windows.go
index 9f69303c..24e430a5 100644
--- a/internal/handler/terminal_stream_windows.go
+++ b/internal/handler/terminal_stream_windows.go
@@ -11,20 +11,20 @@ import (
 )
 
 // runCommandStreamImpl 在 Windows 下用 stdout/stderr 管道执行
-func runCommandStreamImpl(cmd *exec.Cmd, sendEvent func(streamEvent), ctx context.Context) {
+func runCommandStreamImpl(cmd *exec.Cmd, sendEvent func(streamEvent), ctx context.Context) int {
 	stdoutPipe, err := cmd.StdoutPipe()
 	if err != nil {
 		sendEvent(streamEvent{T: "exit", C: -1})
-		return
+		return -1
 	}
 	stderrPipe, err := cmd.StderrPipe()
 	if err != nil {
 		sendEvent(streamEvent{T: "exit", C: -1})
-		return
+		return -1
 	}
 	if err := cmd.Start(); err != nil {
 		sendEvent(streamEvent{T: "exit", C: -1})
-		return
+		return -1
 	}
 
 	normalize := func(s string) string {
@@ -62,4 +62,5 @@ func runCommandStreamImpl(cmd *exec.Cmd, sendEvent func(streamEvent), ctx contex
 		exitCode = -1
 	}
 	sendEvent(streamEvent{T: "exit", C: exitCode})
+	return exitCode
 }
diff --git a/internal/handler/vulnerability.go b/internal/handler/vulnerability.go
index f9a578bd..fd8f7819 100644
--- a/internal/handler/vulnerability.go
+++ b/internal/handler/vulnerability.go
@@ -7,6 +7,7 @@ import (
 	"strings"
 	"time"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/database"
 	"github.com/gin-gonic/gin"
 	"go.uber.org/zap"
@@ -16,6 +17,12 @@ import (
 type VulnerabilityHandler struct {
 	db     *database.DB
 	logger *zap.Logger
+	audit  *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *VulnerabilityHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewVulnerabilityHandler 创建新的漏洞处理器
@@ -72,6 +79,11 @@ func (h *VulnerabilityHandler) CreateVulnerability(c *gin.Context) {
 		return
 	}
 
+	if h.audit != nil {
+		h.audit.RecordOK(c, "vulnerability", "create", "创建漏洞记录", "vulnerability", created.ID, map[string]interface{}{
+			"severity": created.Severity, "title": created.Title,
+		})
+	}
 	c.JSON(http.StatusOK, created)
 }
 
@@ -249,6 +261,11 @@ func (h *VulnerabilityHandler) UpdateVulnerability(c *gin.Context) {
 		return
 	}
 
+	if h.audit != nil {
+		h.audit.RecordOK(c, "vulnerability", "update", "更新漏洞记录", "vulnerability", id, map[string]interface{}{
+			"severity": updated.Severity, "status": updated.Status,
+		})
+	}
 	c.JSON(http.StatusOK, updated)
 }
 
@@ -262,6 +279,17 @@ func (h *VulnerabilityHandler) DeleteVulnerability(c *gin.Context) {
 		return
 	}
 
+	if h.audit != nil {
+		h.audit.Record(c, audit.Entry{
+			Category:     "vulnerability",
+			Action:       "delete",
+			Result:       "success",
+			ResourceType: "vulnerability",
+			ResourceID:   id,
+			Message:      "删除漏洞记录",
+		})
+	}
+
 	c.JSON(http.StatusOK, gin.H{"message": "删除成功"})
 }
 
diff --git a/internal/handler/webshell.go b/internal/handler/webshell.go
index f94a564e..3b95b896 100644
--- a/internal/handler/webshell.go
+++ b/internal/handler/webshell.go
@@ -12,6 +12,7 @@ import (
 	"time"
 	"unicode/utf8"
 
+	"cyberstrike-ai/internal/audit"
 	"cyberstrike-ai/internal/database"
 
 	"github.com/gin-gonic/gin"
@@ -304,6 +305,12 @@ type WebShellHandler struct {
 	logger *zap.Logger
 	client *http.Client
 	db     *database.DB
+	audit  *audit.Service
+}
+
+// SetAudit wires platform audit logging.
+func (h *WebShellHandler) SetAudit(s *audit.Service) {
+	h.audit = s
 }
 
 // NewWebShellHandler 创建 WebShell 处理器，db 可为 nil（连接配置接口将不可用）
@@ -403,6 +410,15 @@ func (h *WebShellHandler) CreateConnection(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		host := req.URL
+		if u, err := url.Parse(req.URL); err == nil {
+			host = u.Host
+		}
+		h.audit.RecordOK(c, "webshell", "connection_create", "创建 WebShell 连接", "webshell_connection", conn.ID, map[string]interface{}{
+			"host": host, "type": shellType,
+		})
+	}
 	c.JSON(http.StatusOK, conn)
 }
 
@@ -485,6 +501,9 @@ func (h *WebShellHandler) DeleteConnection(c *gin.Context) {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
+	if h.audit != nil {
+		h.audit.RecordOK(c, "webshell", "connection_delete", "删除 WebShell 连接", "webshell_connection", id, nil)
+	}
 	c.JSON(http.StatusOK, gin.H{"ok": true})
 }
 
@@ -714,8 +733,9 @@ func (h *WebShellHandler) Exec(c *gin.Context) {
 	output := decodeWebshellOutput(out, req.Encoding)
 	httpCode := resp.StatusCode
 
+	ok := resp.StatusCode == http.StatusOK
 	c.JSON(http.StatusOK, ExecResponse{
-		OK:       resp.StatusCode == http.StatusOK,
+		OK:       ok,
 		Output:   output,
 		HTTPCode: httpCode,
 	})