diff --git a/cmd/sdrd/dsp_loop.go b/cmd/sdrd/dsp_loop.go
index 7d8343f..6af5789 100644
--- a/cmd/sdrd/dsp_loop.go
+++ b/cmd/sdrd/dsp_loop.go
@@ -106,8 +106,10 @@ func runDSP(ctx context.Context, srcMgr *sourceManager, cfg config.Config, det *
 			}
 			var debugInfo *SpectrumDebug
 			plan := state.refinementInput.Plan
+			windowStats := buildWindowStats(state.refinementInput.Windows)
 			hasPlan := plan.TotalCandidates > 0 || plan.Budget > 0 || plan.DroppedBySNR > 0 || plan.DroppedByBudget > 0
-			if len(thresholds) > 0 || len(displaySignals) > 0 || noiseFloor != 0 || hasPlan {
+			hasWindows := windowStats != nil && windowStats.Count > 0
+			if len(thresholds) > 0 || len(displaySignals) > 0 || noiseFloor != 0 || hasPlan || hasWindows {
 				scoreDebug := make([]map[string]any, 0, len(displaySignals))
 				for _, s := range displaySignals {
 					if s.Class == nil || len(s.Class.Scores) == 0 {
@@ -130,6 +132,9 @@ func runDSP(ctx context.Context, srcMgr *sourceManager, cfg config.Config, det *
 				if hasPlan {
 					debugInfo.RefinementPlan = &plan
 				}
+				if hasWindows {
+					debugInfo.Windows = windowStats
+				}
 			}
 			h.broadcast(SpectrumFrame{Timestamp: art.now.UnixMilli(), CenterHz: rt.cfg.CenterHz, SampleHz: rt.cfg.SampleRate, FFTSize: rt.cfg.FFTSize, Spectrum: art.spectrum, Signals: displaySignals, Debug: debugInfo})
 		}
diff --git a/cmd/sdrd/http_handlers.go b/cmd/sdrd/http_handlers.go
index 853a2a7..31f9b20 100644
--- a/cmd/sdrd/http_handlers.go
+++ b/cmd/sdrd/http_handlers.go
@@ -15,8 +15,8 @@ import (
 	"sdr-wideband-suite/internal/config"
 	"sdr-wideband-suite/internal/detector"
 	"sdr-wideband-suite/internal/events"
-	"sdr-wideband-suite/internal/pipeline"
 	fftutil "sdr-wideband-suite/internal/fft"
+	"sdr-wideband-suite/internal/pipeline"
 	"sdr-wideband-suite/internal/recorder"
 	"sdr-wideband-suite/internal/runtime"
 )
@@ -138,13 +138,16 @@ func registerAPIHandlers(mux *http.ServeMux, cfgPath string, cfgManager *runtime
 		cfg := cfgManager.Snapshot()
 		policy := pipeline.PolicyFromConfig(cfg)
 		recommend := map[string]any{
-			"mode":                policy.Mode,
-			"intent":              policy.Intent,
-			"monitor_span_hz":     policy.MonitorSpanHz,
-			"signal_priorities":   policy.SignalPriorities,
-			"auto_record_classes": policy.AutoRecordClasses,
-			"auto_decode_classes": policy.AutoDecodeClasses,
-			"refinement_jobs":     policy.MaxRefinementJobs,
+			"mode":                   policy.Mode,
+			"intent":                 policy.Intent,
+			"monitor_span_hz":        policy.MonitorSpanHz,
+			"signal_priorities":      policy.SignalPriorities,
+			"auto_record_classes":    policy.AutoRecordClasses,
+			"auto_decode_classes":    policy.AutoDecodeClasses,
+			"refinement_jobs":        policy.MaxRefinementJobs,
+			"refinement_auto_span":   policy.RefinementAutoSpan,
+			"refinement_min_span_hz": policy.RefinementMinSpanHz,
+			"refinement_max_span_hz": policy.RefinementMaxSpanHz,
 		}
 		_ = json.NewEncoder(w).Encode(recommend)
 	})
diff --git a/cmd/sdrd/types.go b/cmd/sdrd/types.go
index 2af57bd..8841abc 100644
--- a/cmd/sdrd/types.go
+++ b/cmd/sdrd/types.go
@@ -18,6 +18,15 @@ type SpectrumDebug struct {
 	NoiseFloor     float64                  `json:"noise_floor,omitempty"`
 	Scores         []map[string]any         `json:"scores,omitempty"`
 	RefinementPlan *pipeline.RefinementPlan `json:"refinement_plan,omitempty"`
+	Windows        *RefinementWindowStats   `json:"refinement_windows,omitempty"`
+}
+
+type RefinementWindowStats struct {
+	Count   int            `json:"count"`
+	MinSpan float64        `json:"min_span_hz"`
+	MaxSpan float64        `json:"max_span_hz"`
+	AvgSpan float64        `json:"avg_span_hz"`
+	Sources map[string]int `json:"sources,omitempty"`
 }
 
 type SpectrumFrame struct {
diff --git a/cmd/sdrd/window_stats.go b/cmd/sdrd/window_stats.go
new file mode 100644
index 0000000..d0c3e0b
--- /dev/null
+++ b/cmd/sdrd/window_stats.go
@@ -0,0 +1,37 @@
+package main
+
+import "sdr-wideband-suite/internal/pipeline"
+
+func buildWindowStats(windows []pipeline.RefinementWindow) *RefinementWindowStats {
+	if len(windows) == 0 {
+		return nil
+	}
+	stats := &RefinementWindowStats{Sources: map[string]int{}}
+	minSpan := 0.0
+	maxSpan := 0.0
+	sum := 0.0
+	for i, w := range windows {
+		span := w.SpanHz
+		if span <= 0 {
+			continue
+		}
+		if i == 0 || span < minSpan {
+			minSpan = span
+		}
+		if i == 0 || span > maxSpan {
+			maxSpan = span
+		}
+		sum += span
+		stats.Count++
+		if w.Source != "" {
+			stats.Sources[w.Source]++
+		}
+	}
+	if stats.Count == 0 {
+		return nil
+	}
+	stats.MinSpan = minSpan
+	stats.MaxSpan = maxSpan
+	stats.AvgSpan = sum / float64(stats.Count)
+	return stats
+}