diff --git a/cmd/main.go b/cmd/main.go
index d7c6a74..7e7011f 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -112,50 +112,57 @@ func main() {
 		if err != nil {
 			return
 		}
-		depAnalyzer := DepAnalyzer{}
-		depAnalyzer.Data = d
-		deps, err := depAnalyzer.Run()
-		if err != nil {
-			return
-		}
-		//
-		// Post report.
-		appAnalysis := addon.Application.Analysis(application.ID)
-		mark := time.Now()
-		analysis := &api.Analysis{}
-		err = appAnalysis.Create(
-			analysis,
-			binding.MIMEYAML,
-			issues.Reader(),
-			deps.Reader())
-		if err == nil {
-			addon.Activity("Analysis reported. duration: %s", time.Since(mark))
-		} else {
-			ruleErr := &RuleError{}
-			if errors.As(err, &ruleErr) {
-				ruleErr.Report()
-				err = nil
+		if !d.Mode.Discovery {
+			depAnalyzer := DepAnalyzer{}
+			depAnalyzer.Data = d
+			deps, dErr := depAnalyzer.Run()
+			if dErr != nil {
+				err = dErr
+				return
+			}
+			//
+			// Post report.
+			appAnalysis := addon.Application.Analysis(application.ID)
+			mark := time.Now()
+			analysis := &api.Analysis{}
+			err = appAnalysis.Create(
+				analysis,
+				binding.MIMEYAML,
+				issues.Reader(),
+				deps.Reader())
+			if err == nil {
+				addon.Activity("Analysis reported. duration: %s", time.Since(mark))
+			} else {
+				ruleErr := &RuleError{}
+				if errors.As(err, &ruleErr) {
+					ruleErr.Report()
+					err = nil
+				}
+				return
+			}
+			//
+			// Facts
+			facts := addon.Application.Facts(application.ID)
+			facts.Source(Source)
+			err = facts.Replace(issues.Facts())
+			if err == nil {
+				addon.Activity("Facts updated.")
+			} else {
+				return
 			}
-			return
 		}
+
 		//
 		// Tags.
 		if d.Tagger.Enabled {
+			if d.Tagger.Source == "" {
+				d.Tagger.Source = Source
+			}
 			err = d.Tagger.Update(application.ID, issues.Tags())
 			if err != nil {
 				return
 			}
 		}
-		//
-		// Facts
-		facts := addon.Application.Facts(application.ID)
-		facts.Source(Source)
-		err = facts.Replace(issues.Facts())
-		if err == nil {
-			addon.Activity("Facts updated.")
-		} else {
-			return
-		}
 
 		addon.Activity("Done.")
 
diff --git a/cmd/mode.go b/cmd/mode.go
index 3b7e670..94f89d4 100644
--- a/cmd/mode.go
+++ b/cmd/mode.go
@@ -15,6 +15,7 @@ import (
 
 // Mode settings.
 type Mode struct {
+	Discovery  bool   `json:"discovery"`
 	Binary     bool   `json:"binary"`
 	Artifact   string `json:"artifact"`
 	WithDeps   bool   `json:"withDeps"`
diff --git a/cmd/tagger.go b/cmd/tagger.go
index c36def4..4e650f0 100644
--- a/cmd/tagger.go
+++ b/cmd/tagger.go
@@ -12,7 +12,8 @@ var TagExp = regexp.MustCompile("(.+)(=)(.+)")
 
 // Tagger tags an application.
 type Tagger struct {
-	Enabled bool `json:"enabled"`
+	Enabled bool   `json:"enabled"`
+	Source  string `json:"source"`
 }
 
 // AddOptions adds analyzer options.