diff --git a/README.ja.md b/README.ja.md
index e33b312f9..a7f43b9a7 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -195,6 +195,9 @@ picoclaw onboard
         "api_key": "YOUR_BRAVE_API_KEY",
         "max_results": 5
       }
+    },
+    "cron": {
+      "exec_timeout_minutes": 5
     }
   },
   "heartbeat": {
@@ -697,6 +700,9 @@ HEARTBEAT_OK 応答         ユーザーが直接結果を受け取る
       "search": {
         "apiKey": "BSA..."
       }
+    },
+    "cron": {
+      "exec_timeout_minutes": 5
     }
   },
   "heartbeat": {
diff --git a/README.md b/README.md
index a6f421e9d..e80e2213c 100644
--- a/README.md
+++ b/README.md
@@ -774,6 +774,9 @@ picoclaw agent -m "Hello"
         "enabled": true,
         "max_results": 5
       }
+    },
+    "cron": {
+      "exec_timeout_minutes": 5
     }
   },
   "heartbeat": {
diff --git a/README.zh.md b/README.zh.md
index 48d7677f0..e7dc8d769 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -236,6 +236,9 @@ picoclaw onboard
         "api_key": "YOUR_BRAVE_API_KEY",
         "max_results": 5
       }
+    },
+    "cron": {
+      "exec_timeout_minutes": 5
     }
   }
 }
@@ -644,6 +647,9 @@ picoclaw agent -m "你好"
       "search": {
         "api_key": "BSA..."
       }
+    },
+    "cron": {
+      "exec_timeout_minutes": 5
     }
   },
   "heartbeat": {
diff --git a/cmd/picoclaw/main.go b/cmd/picoclaw/main.go
index 10b53948b..fd7ec484a 100644
--- a/cmd/picoclaw/main.go
+++ b/cmd/picoclaw/main.go
@@ -562,7 +562,8 @@ func gatewayCmd() {
 		})
 
 	// Setup cron tool and service
-	cronService := setupCronTool(agentLoop, msgBus, cfg.WorkspacePath(), cfg.Agents.Defaults.RestrictToWorkspace)
+	execTimeout := time.Duration(cfg.Tools.Cron.ExecTimeoutMinutes) * time.Minute
+	cronService := setupCronTool(agentLoop, msgBus, cfg.WorkspacePath(), cfg.Agents.Defaults.RestrictToWorkspace, execTimeout)
 
 	heartbeatService := heartbeat.NewHeartbeatService(
 		cfg.WorkspacePath(),
@@ -987,14 +988,14 @@ func getConfigPath() string {
 	return filepath.Join(home, ".picoclaw", "config.json")
 }
 
-func setupCronTool(agentLoop *agent.AgentLoop, msgBus *bus.MessageBus, workspace string, restrict bool) *cron.CronService {
+func setupCronTool(agentLoop *agent.AgentLoop, msgBus *bus.MessageBus, workspace string, restrict bool, execTimeout time.Duration) *cron.CronService {
 	cronStorePath := filepath.Join(workspace, "cron", "jobs.json")
 
 	// Create cron service
 	cronService := cron.NewCronService(cronStorePath, nil)
 
 	// Create and register CronTool
-	cronTool := tools.NewCronTool(cronService, agentLoop, msgBus, workspace, restrict)
+	cronTool := tools.NewCronTool(cronService, agentLoop, msgBus, workspace, restrict, execTimeout)
 	agentLoop.RegisterTool(cronTool)
 
 	// Set the onJob handler
diff --git a/config/config.example.json b/config/config.example.json
index 62ad2c5fe..7cd0ab8c6 100644
--- a/config/config.example.json
+++ b/config/config.example.json
@@ -127,6 +127,9 @@
         "api_key": "pplx-xxx",
         "max_results": 5
       }
+    },
+    "cron": {
+      "exec_timeout_minutes": 5
     }
   },
   "heartbeat": {
diff --git a/pkg/config/config.go b/pkg/config/config.go
index 558bf6a93..1d34f56f3 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -218,8 +218,13 @@ type WebToolsConfig struct {
 	Perplexity PerplexityConfig `json:"perplexity"`
 }
 
+type CronToolsConfig struct {
+	ExecTimeoutMinutes int `json:"exec_timeout_minutes" env:"PICOCLAW_TOOLS_CRON_EXEC_TIMEOUT_MINUTES"` // 0 means no timeout
+}
+
 type ToolsConfig struct {
-	Web WebToolsConfig `json:"web"`
+	Web  WebToolsConfig  `json:"web"`
+	Cron CronToolsConfig `json:"cron"`
 }
 
 func DefaultConfig() *Config {
@@ -334,6 +339,9 @@ func DefaultConfig() *Config {
 					MaxResults: 5,
 				},
 			},
+			Cron: CronToolsConfig{
+				ExecTimeoutMinutes: 5, // default 5 minutes for LLM operations
+			},
 		},
 		Heartbeat: HeartbeatConfig{
 			Enabled:  true,
diff --git a/pkg/tools/cron.go b/pkg/tools/cron.go
index 4b6f973d8..21bee42ef 100644
--- a/pkg/tools/cron.go
+++ b/pkg/tools/cron.go
@@ -28,12 +28,15 @@ type CronTool struct {
 }
 
 // NewCronTool creates a new CronTool
-func NewCronTool(cronService *cron.CronService, executor JobExecutor, msgBus *bus.MessageBus, workspace string, restrict bool) *CronTool {
+// execTimeout: 0 means no timeout, >0 sets the timeout duration
+func NewCronTool(cronService *cron.CronService, executor JobExecutor, msgBus *bus.MessageBus, workspace string, restrict bool, execTimeout time.Duration) *CronTool {
+	execTool := NewExecTool(workspace, restrict)
+	execTool.SetTimeout(execTimeout) // 0 means no timeout
 	return &CronTool{
 		cronService: cronService,
 		executor:    executor,
 		msgBus:      msgBus,
-		execTool:    NewExecTool(workspace, restrict),
+		execTool:    execTool,
 	}
 }
 
diff --git a/pkg/tools/shell.go b/pkg/tools/shell.go
index 1ca3fc35a..713850f97 100644
--- a/pkg/tools/shell.go
+++ b/pkg/tools/shell.go
@@ -89,7 +89,14 @@ func (t *ExecTool) Execute(ctx context.Context, args map[string]interface{}) *To
 		return ErrorResult(guardError)
 	}
 
-	cmdCtx, cancel := context.WithTimeout(ctx, t.timeout)
+	// timeout == 0 means no timeout
+	var cmdCtx context.Context
+	var cancel context.CancelFunc
+	if t.timeout > 0 {
+		cmdCtx, cancel = context.WithTimeout(ctx, t.timeout)
+	} else {
+		cmdCtx, cancel = context.WithCancel(ctx)
+	}
 	defer cancel()
 
 	var cmd *exec.Cmd