diff --git a/batch-extract-50.sh b/batch-extract-50.sh
index 88ce9b8..58347ba 100755
--- a/batch-extract-50.sh
+++ b/batch-extract-50.sh
@@ -97,6 +97,17 @@ for SOURCE in $SOURCES; do
     BASENAME=$(basename "$SOURCE" .md)
     BRANCH="extract/$BASENAME"
 
+    # Skip conversation archives — valuable content enters through standalone sources,
+    # inline tags (SOURCE:/CLAIM:), and transcript review. Raw conversations produce
+    # low-quality claims with schema failures. (Epimetheus session 4)
+    if grep -q "^format: conversation" "$SOURCE" 2>/dev/null; then
+        # Move to archive instead of leaving in queue (prevents re-processing)
+        mv "$SOURCE" "$MAIN_REPO/inbox/archive/telegram/" 2>/dev/null
+        echo "[$(date)] [$COUNT/$MAX] ARCHIVE $BASENAME (conversation — skipped extraction)" >> $LOG
+        SKIPPED=$((SKIPPED + 1))
+        continue
+    fi
+
     # Gate 1: Already in archive? Source was already processed — dedup (Ganymede)
     if find "$MAIN_REPO/inbox/archive" -name "$BASENAME.md" 2>/dev/null | grep -q .; then
         echo "[$(date)] [$COUNT/$MAX] SKIP $BASENAME (already in archive)" >> $LOG