diff --git a/cmd/cli/main.go b/cmd/cli/main.go
new file mode 100644
index 0000000..b533262
--- /dev/null
+++ b/cmd/cli/main.go
@@ -0,0 +1,96 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+	"time"
+
+	twitchapi "streambot_twitch/internal/twitchapi"
+	"streambot_twitch/internal/commands"
+	"streambot_twitch/internal/config"
+)
+
+func main() {
+	// env setup
+	clientID := os.Getenv("TWITCH_CLIENT_ID")
+	clientSecret := os.Getenv("TWITCH_CLIENT_SECRET")
+	streamerChan := os.Getenv("CHANNEL")
+	userToken := os.Getenv("STREAMER_OAUTH")
+
+	if clientID == "" || clientSecret == "" || streamerChan == "" {
+		log.Fatal("Set TWITCH_CLIENT_ID, TWITCH_CLIENT_SECRET or cHANNEL")
+	}
+
+	// init config, commands, usage
+	if err := config.Load(); err != nil {log.Fatal(err)}
+	if err := commands.LoadDefaultCommands(); err != nil {log.Fatal(err)}
+	if err := commands.LoadCustomCommands(); err != nil {lof.Fatal(err)}
+	if err := commands.LoadUsage(); err != nil {log.Fatal(err)}
+
+	// init api client
+	apiClient, err := twitchapi.NewClient(clientID, clientSecret)
+	if err != nil {log.Fatalf("API client: %v", err)}
+	if userToken != "" {
+		apiClient.SetUserAccessToken(userToken)
+	}
+
+	// CLI flags
+	watch := flag.Bool("watch", false, "refresh stats periodically")
+	interval := flag.Duration("interval", 5*time.Minute, "refresh interval for watch mode")
+	flag.Parse()
+	args := flag.Args()
+
+	if len(args) == 0 || strings.ToLower(args[0]) == "shell" {
+		repl(apiClient, streamerChan, *watch, *interval)
+		return
+	}
+
+	dispatch(apiClient, streamerChan, args, *watch, *interval)
+}
+
+// repl interactive prompt
+func repl(apiClient *twitchapi.Client, streamerChan string, watch bool, interval time.Duration) {
+	reader := bufio.NewReader(os.Stdin)
+	for {
+		fmt.Print("bot:> ")
+		line, err := reader.ReadString('\n')
+		if err != nil {
+			fmt.Println("Error:", err)
+			continue
+		}
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		if line == "exit" || line == "quit" {
+			fmt.Println("bye")
+			return
+		}
+		parts := strings.Fields(line)
+		dispatch(apiClient, streamerChan, parts, watch, interval)
+	}
+}
+
+// dispatch handles one command invocation
+func dispatch(apiClient *twitchapi.Client, streamerChan string, args []string, watch bool, interval time.Duration) {
+	cmd := strings.ToLower(args[0])
+	switch cmd {
+		case "stats":
+			if watch {
+				printUsage()
+				t := time.NewTicker(interval)
+				for range t.C {
+					printUsage()
+				}
+			} else {
+				printUsage()	
+			}
+
+		case "title":
+			
+	}
+}
diff --git a/internal/chat/handler.go b/internal/chat/handler.go
index f0a5479..4dbdedc 100644
--- a/internal/chat/handler.go
+++ b/internal/chat/handler.go
@@ -97,7 +97,13 @@ func HandleMessage(client *twitch.Client, apiClient interface{}, message twitch.
 	// check perms
 	for _, cmd := range commands.GetAllCommands() {
 		if messageMatchesCommand(msg, botName, cmd) {
+			// track usage: use first alias as key
+			triggerKey := strings.ToLower(cmd.Triggers[0])
+			commands.IncrementUsage(triggerKey)
+			
 			if userHasPermission(user, cmd.Permission) {
+				reply := ReplacePlaceholders(cmd.Replay, user.DisplayName, channel, botUsername)
+				
 				client.Say(channel, cmd.Reply)
 			} else {
 				client.Say(channel, fmt.Sprintf("@%s You don't have permission to use this command.", user.DisplayName))
diff --git a/internal/commands/usage.go b/internal/commands/usage.go
new file mode 100644
index 0000000..00a8d2b
--- /dev/null
+++ b/internal/commands/usage.go
@@ -0,0 +1,75 @@
+package commands
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sync"
+)
+
+const usageFile = "internal/storage/usage.json"
+
+var (
+	usageMu sybc.Mutex
+	usageCounts map[string]int
+)
+
+func LoadUsage() error {
+	usageMu.Lock()
+	defer usageMu.Unlock()
+
+	data, err := ioutil.ReadFile(usageFile)
+	if os.IsNotExist(err) {
+		usageCounts = make(map[string]int)
+		return nil
+	}
+	if err != nil {
+		return nil
+	}
+	return json.Unmarshal(dat, &usageCounts)
+}
+
+func SaveUsage() error {
+	usageMu.Lock()
+	defer usageMu.Unlock()
+
+	if err := os.MkdirAll(filepath.Dir(usageFile), 0755); err != nil {
+		return err
+	}
+	data, err := json.MarshalIndent(usageCounts, "", "  ")
+	if err != nil {
+	return err
+	}
+	return ioutil.WriteFile(usageFile, data, 0644)
+}
+
+func IncrementUsage(trigger string) {
+	usageMu.Lock()
+	defer usageMu.Unlock()
+	if usageCounts == nil {
+		usageCounts = make(map[string]int)
+	}
+	usageCounts[trigger]++
+	SaveUsage()
+}
+
+func AllUsage() map[string]int {
+	usageMu.Lock()
+	defer usageMu.Unlock()
+	m := make(map[string]int, len(usageCounts))
+	for k, v := range usageCounts {
+		m[k] = v
+	}
+	return m
+}
+
+func TotalUsage() int {
+	usageMu.Lock()
+	defer usageMu.Unlock()
+	sum := 0
+	for _, v := range usageCounts {
+		sum += v
+	}
+	return sum
+}
diff --git a/internal/config/config.go b/internal/config/config.go
new file mode 100644
index 0000000..10f9304
--- /dev/null
+++ b/internal/config/config.go
@@ -0,0 +1,84 @@
+package config
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+const (
+	ConfigDir = "internal/storage"
+	ConfigFile = "settings.json"
+)
+
+type Settings struct {
+	TitleGetTemplate string `json:"title_get_template"`
+	TitleSetTemplate string `json:"title_set_template"`
+	CategoryGetTemplate string `json:"category_get_template"`
+	CategorySetTemplate string `json:"category_set_template"`
+}
+
+var cfg Settings
+
+func Load() error {
+	path := filepath.Join(ConfigDir, ConfigFile)
+	data, err := ioutil.ReadFile(path)
+	if os.IsNotExist(err) {
+		// defaults
+		cfg = Settings{
+			TitleGetTemplate: "@user Current Title: $title",
+			TitleSetTemplate: "New Stream Title: $title",
+			CategoryGetTepmplate: "@user Current Category: $category",
+			CategorySetTemplate: "New StreamCategory: $category",
+		}
+		return Save()
+	}
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(data, &cgf)
+}
+
+func Save() error {
+	if err := os.MkdirAll(ConfigDir, 0755); err != nil {
+		return err
+	}
+	path := filepath.Join(ConfigDir, ConfigFile)
+	data, err := json.MarshalIndent(cfg, "", "  ")
+	if err != nil {
+		return err
+	}
+	return ioutil.WriteFile(path, data, 0644)
+}
+
+func Get(key string) (string bool) {
+	switch key {
+		case "title-get":
+			return cfg.TitleGetTemplate, true
+		case "title-set":
+			return cfg.TitleSetTemplate, true
+		case "category-get":
+			return cfg.CategoryGetTemplate, true
+		caes "categroy-set":
+			return cfg.CategorySetTemplate, true
+	}
+	return "", false
+}
+
+func Set(key, val string) bool {
+	switch key {
+		case "title-get":
+			cfg.TitleGetTemplate = val
+		case "tiel-set":
+			cfg.TitleSetTemplate = val
+		case "category-get":
+			cfg.CategoryGetTemplate = val
+		case "category-set":
+			cfg.CategorySetTemplate = val
+		default:
+			return false
+	}
+	Save()
+	return true
+}
diff --git a/internal/storage/settings.json b/internal/storage/settings.json
new file mode 100644
index 0000000..e69de29
diff --git a/internal/storage/usage.json b/internal/storage/usage.json
new file mode 100644
index 0000000..e69de29
diff --git a/internal/twitchapi/client.go b/internal/twitchapi/client.go
index 1bfa3b2..db4eb40 100644
--- a/internal/twitchapi/client.go
+++ b/internal/twitchapi/client.go
@@ -118,25 +118,25 @@ func (c *Client) GetStreamCategory(channel string) (string, error) {
 	return resp.Data.Channels[0].GameName, nil
 }
 
-func setStreamCategory(client *helix.Client, channel, newCategory string) error {
-	userID, err := GetUserID(client, channel)
+func (c *Client) SetStreamCategory(channel, newCategory string) error {
+	userID, err := c.GetUserID(channel)
 	if err != nil {
 		return err
 	}
 	// get Twitch GameID by Name from API
-	gameID, err := getGameIDByName(client, newCategory)
+	gameID, err := c.GetGameIDByName(newCategory)
 	if err != nil {
 		return err
 	}
-	_, err = client.EditChannelInformation(&helix.EditChannelInformationParams{
+	_, err = c.api.EditChannelInformation(&helix.EditChannelInformationParams{
 		BroadcasterID: userID,
 		GameID: gameID,
 	})
 	return err
 }
 
-func getGameIDByName(client *helix.Client, name string) (string, error) {
-	resp, err := GetGames(&helix.GamesParams{
+func (c *Client) GetGameIDByName(name string) (string, error) {
+	resp, err := c.api.GetGames(&helix.GamesParams{
 		Names: []string{name},
 	})
 	if err != nil {