diff --git a/services/wolf.sh b/services/wolf.sh
index 2db65fb..2e7c322 100644
--- a/services/wolf.sh
+++ b/services/wolf.sh
@@ -2024,8 +2024,27 @@ _cache_ge_proton() {
         url="https://github.com/GloriousEggroll/proton-ge-custom/releases/download/$version/$version.tar.gz"
     else
         echo "Fetching latest GE-Proton release info..."
+        # A plain grep+cut over the raw JSON used to break outright once a
+        # release started shipping more than one .tar.gz-suffixed asset (a
+        # second architecture build, a differently-named tarball, etc.) —
+        # grep then returns more than one line, and $(...) glues them
+        # together with an embedded newline instead of picking just one,
+        # which curl rejects outright ("URL rejected: Malformed input to a
+        # URL function") rather than a clean single URL. Parse the JSON for
+        # real instead of pattern-matching the raw text.
         url=$(curl -sL https://api.github.com/repos/GloriousEggroll/proton-ge-custom/releases/latest \
-              | grep browser_download_url | grep '\.tar\.gz' | cut -d'"' -f4)
+            | python3 -c '
+import sys, json
+try:
+    release = json.load(sys.stdin)
+except Exception:
+    print("")
+    raise SystemExit
+assets = [a for a in release.get("assets", []) if a.get("name", "").endswith(".tar.gz")]
+x64 = [a for a in assets if "x86_64" in a.get("name", "")]
+pick = x64 or assets
+print(pick[0]["browser_download_url"] if pick else "")
+' 2>/dev/null)
         if [ -z "$url" ]; then
             echo "Could not determine GE-Proton download URL (GitHub rate-limited or offline?)."
             return 1
@@ -3143,8 +3162,23 @@ PYEOF
             echo "Using pre-downloaded GE-Proton: $NAME"
         else
             echo "Fetching latest GE-Proton release info..."
+            # See _cache_ge_proton()'s own comment above for why this parses
+            # the JSON for real instead of grep+cut over the raw text —
+            # more than one matching .tar.gz asset used to glue into one
+            # multi-line, curl-rejected "Malformed input to a URL function".
             URL=$(curl -sL https://api.github.com/repos/GloriousEggroll/proton-ge-custom/releases/latest \
-                  | grep browser_download_url | grep '\.tar\.gz' | cut -d'"' -f4)
+                | python3 -c '
+import sys, json
+try:
+    release = json.load(sys.stdin)
+except Exception:
+    print("")
+    raise SystemExit
+assets = [a for a in release.get("assets", []) if a.get("name", "").endswith(".tar.gz")]
+x64 = [a for a in assets if "x86_64" in a.get("name", "")]
+pick = x64 or assets
+print(pick[0]["browser_download_url"] if pick else "")
+' 2>/dev/null)
             if [ -z "$URL" ]; then
                 echo "Could not determine GE-Proton download URL (GitHub rate-limited or offline?)."
                 exit 1
@@ -6175,8 +6209,23 @@ MD
     (
         CACHE_DIR="$WOLF_DIR/ge-proton-cache"
         mkdir -p "$CACHE_DIR"
+        # See the matching comment on manage.sh's own ge-proton command for
+        # why this parses the JSON for real instead of grep+cut over the raw
+        # text — more than one matching .tar.gz asset used to glue into one
+        # multi-line, curl-rejected "Malformed input to a URL function".
         URL=$(curl -sL https://api.github.com/repos/GloriousEggroll/proton-ge-custom/releases/latest \
-              | grep browser_download_url | grep '\.tar\.gz' | cut -d'"' -f4)
+            | python3 -c '
+import sys, json
+try:
+    release = json.load(sys.stdin)
+except Exception:
+    print("")
+    raise SystemExit
+assets = [a for a in release.get("assets", []) if a.get("name", "").endswith(".tar.gz")]
+x64 = [a for a in assets if "x86_64" in a.get("name", "")]
+pick = x64 or assets
+print(pick[0]["browser_download_url"] if pick else "")
+' 2>/dev/null)
         if [ -z "$URL" ]; then
             log_warning "Could not fetch GE-Proton URL — run './manage.sh ge-proton' later."
         else