diff --git a/internal/httpapi/knowledge.go b/internal/httpapi/knowledge.go
index ed3735e..f63e1c0 100644
--- a/internal/httpapi/knowledge.go
+++ b/internal/httpapi/knowledge.go
@@ -3,6 +3,7 @@ package httpapi
 import (
 	"context"
 	"encoding/json"
+	"log/slog"
 	"net/http"
 	"strconv"
 
@@ -36,8 +37,13 @@ func (s *Server) serveRecentKnowledge(w http.ResponseWriter, req *http.Request)
 		AgentAuthored bool     `json:"agent_authored"`
 	}
 
+	// updated_at is cast to text in SQL — pgx v5 can't scan a timestamptz
+	// directly into a Go string (needs time.Time or an explicit cast), and
+	// that scan error was being silently swallowed below (every row skipped,
+	// endpoint returned 200 with an empty list and correct-looking stats
+	// since the stats query doesn't scan any timestamp column — found live).
 	rows, err := s.pool.Query(ctx, `
-		SELECT e.slug, ke.title, e.type, COALESCE(ke.source,''), ke.tags, ke.updated_at
+		SELECT e.slug, ke.title, e.type, COALESCE(ke.source,''), ke.tags, ke.updated_at::text
 		FROM knowledge_entities ke
 		JOIN entities e ON e.id = ke.entity_id
 		WHERE ($1 = '' OR ke.source = $1)
@@ -53,6 +59,7 @@ func (s *Server) serveRecentKnowledge(w http.ResponseWriter, req *http.Request)
 		var it item
 		var src string
 		if err := rows.Scan(&it.Slug, &it.Title, &it.Kind, &src, &it.Tags, &it.UpdatedAt); err != nil {
+			slog.Error("httpapi: knowledge/recent row scan failed", "error", err)
 			continue
 		}
 		it.Source = src