diff --git a/scripts/agent-worktree.sh b/scripts/agent-worktree.sh
new file mode 100755
index 00000000..b3fc3f6f
--- /dev/null
+++ b/scripts/agent-worktree.sh
@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+# scripts/agent-worktree.sh
+# Multi-agent worktree workflow helper.
+# See docs/superpowers/specs/2026-05-12-multi-agent-worktree-workflow-design.md
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+# shellcheck source=lib/agent-worktree-lib.sh
+source "$SCRIPT_DIR/lib/agent-worktree-lib.sh"
+
+WORKTREE_ROOT="${WORKTREE_ROOT:-$HOME/CyberMindStudio/secubox-deb-worktrees}"
+GH_BIN="${GH_BIN:-gh}"
+GIT_BIN="${GIT_BIN:-git}"
+
+usage() {
+  cat <<'USAGE'
+agent-worktree.sh — multi-agent worktree workflow helper
+
+Usage:
+  agent-worktree.sh start  --issue <N> [--dry-run] [--verbose]
+  agent-worktree.sh list   [--verbose]
+  agent-worktree.sh sync   [<N>]
+  agent-worktree.sh finish [--dry-run]
+  agent-worktree.sh clean  <N> [--force]
+  agent-worktree.sh --help
+
+Environment:
+  WORKTREE_ROOT   override worktree root (default: ~/CyberMindStudio/secubox-deb-worktrees)
+  GH_BIN, GIT_BIN override CLI binaries (used by tests)
+
+Exit codes:
+  0 success
+  1 generic / usage
+  2 precondition (issue missing, gh not authed, etc.)
+  3 bad state (dirty tree, conflict, non-merged PR)
+  4 network / remote error
+USAGE
+}
+
+cmd_start()  { echo "start: not implemented" >&2 ; return 1; }
+cmd_list()   { echo "list: not implemented"  >&2 ; return 1; }
+cmd_sync()   { echo "sync: not implemented"  >&2 ; return 1; }
+cmd_finish() { echo "finish: not implemented" >&2; return 1; }
+cmd_clean()  { echo "clean: not implemented" >&2 ; return 1; }
+
+main() {
+  local sub="${1:-}"
+  shift || true
+  case "$sub" in
+    -h|--help|help|"") usage ; return 0 ;;
+    start)  cmd_start  "$@" ;;
+    list)   cmd_list   "$@" ;;
+    sync)   cmd_sync   "$@" ;;
+    finish) cmd_finish "$@" ;;
+    clean)  cmd_clean  "$@" ;;
+    *) echo "unknown sub-command: $sub" >&2 ; usage >&2 ; return 1 ;;
+  esac
+}
+
+main "$@"
diff --git a/scripts/tests/test-agent-worktree.sh b/scripts/tests/test-agent-worktree.sh
index 5eeeac26..a9a89a23 100755
--- a/scripts/tests/test-agent-worktree.sh
+++ b/scripts/tests/test-agent-worktree.sh
@@ -101,6 +101,25 @@ test_prefix_first_match_wins() {
   assert_eq "fix/" "$(prefix_from_labels 'bug,documentation')" "first match"
 }
 
+test_script_help_exits_zero() {
+  local out
+  out=$(bash "$SCRIPT" --help 2>&1)
+  assert_eq "0" "$?" "help exit"
+  assert_contains "$out" "agent-worktree.sh"
+  assert_contains "$out" "start"
+  assert_contains "$out" "list"
+  assert_contains "$out" "sync"
+  assert_contains "$out" "finish"
+  assert_contains "$out" "clean"
+}
+
+test_script_unknown_subcommand_exits_1() {
+  local out rc
+  out=$(bash "$SCRIPT" wibble 2>&1) ; rc=$?
+  if [[ $rc -ne 1 ]]; then echo "expected rc=1, got $rc; out=$out" >&2; return 1; fi
+  assert_contains "$out" "unknown"
+}
+
 # Auto-discover and run
 mapfile -t tests < <(declare -F | awk '{print $3}' | grep '^test_')
 for t in "${tests[@]}"; do run_test "$t"; done