diff --git a/cmd/cachewd/main.go b/cmd/cachewd/main.go
index 47d2ce4..3a71fad 100644
--- a/cmd/cachewd/main.go
+++ b/cmd/cachewd/main.go
@@ -150,6 +150,21 @@ func newMux(ctx context.Context, cr *cache.Registry, sr *strategy.Registry, prov
 		_, _ = w.Write([]byte("OK")) //nolint:errcheck
 	})
 
+	mux.HandleFunc("GET /admin/log/level", func(w http.ResponseWriter, _ *http.Request) {
+		_, _ = fmt.Fprintln(w, logging.GetLevel().String())
+	})
+
+	mux.HandleFunc("PUT /admin/log/level", func(w http.ResponseWriter, r *http.Request) {
+		var level slog.Level
+		if err := level.UnmarshalText([]byte(strings.TrimSpace(r.FormValue("level")))); err != nil {
+			http.Error(w, fmt.Sprintf("invalid level: %s", err), http.StatusBadRequest)
+			return
+		}
+		logging.SetLevel(level)
+		logging.FromContext(r.Context()).Info("Log level changed", "level", level)
+		_, _ = fmt.Fprintln(w, logging.GetLevel().String())
+	})
+
 	if err := config.Load(ctx, cr, sr, providersConfigHCL, mux, vars); err != nil {
 		return nil, errors.Errorf("load config: %w", err)
 	}
diff --git a/internal/logging/logging.go b/internal/logging/logging.go
index 45a9bbd..20a1796 100644
--- a/internal/logging/logging.go
+++ b/internal/logging/logging.go
@@ -15,12 +15,23 @@ type Config struct {
 	Remap map[string]string `hcl:"remap,optional" help:"Remap field names from old to new (e.g., msg=message, time=timestamp)."`
 }
 
+var levelVar = &slog.LevelVar{} //nolint:gochecknoglobals
+
 type logKey struct{}
 
+// SetLevel sets the global log level at runtime.
+func SetLevel(level slog.Level) { levelVar.Set(level) }
+
+// GetLevel returns the current global log level.
+func GetLevel() slog.Level { return levelVar.Level() }
+
+// Configure sets up logging with the given config and returns the logger and updated context.
 func Configure(ctx context.Context, config Config) (*slog.Logger, context.Context) {
+	levelVar.Set(config.Level)
+
 	var handler slog.Handler
 	if config.JSON {
-		options := &slog.HandlerOptions{Level: config.Level}
+		options := &slog.HandlerOptions{Level: levelVar}
 		if len(config.Remap) > 0 {
 			options.ReplaceAttr = func(groups []string, a slog.Attr) slog.Attr {
 				if len(groups) > 0 {
@@ -35,7 +46,7 @@ func Configure(ctx context.Context, config Config) (*slog.Logger, context.Contex
 		handler = &messageHandler{inner: slog.NewJSONHandler(os.Stdout, options)}
 	} else {
 		handler = tint.NewHandler(os.Stderr, &tint.Options{
-			Level: config.Level,
+			Level: levelVar,
 			ReplaceAttr: func(groups []string, a slog.Attr) slog.Attr {
 				if a.Key == slog.TimeKey && len(groups) == 0 {
 					return slog.Attr{}