diff --git a/code/tools/check_rust_toolchain.sh b/code/tools/check_rust_toolchain.sh
new file mode 100644
index 000000000..3fa3398ab
--- /dev/null
+++ b/code/tools/check_rust_toolchain.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Simple helper to show the active Rust toolchain for the Malachite workspace.
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "${SCRIPT_DIR}/../.." && pwd)"
+cd "${REPO_ROOT}"
+
+echo "== Malachite Rust toolchain check =="
+echo
+
+if ! command -v rustc >/dev/null 2>&1; then
+  echo "rustc is not installed. Please install Rust via rustup: https://rustup.rs/." >&2
+  exit 1
+fi
+
+echo "rustc version:"
+rustc --version
+echo
+
+if command -v cargo >/dev/null 2>&1; then
+  echo "cargo version:"
+  cargo --version
+  echo
+fi
+
+if [ -f "rust-toolchain.toml" ] || [ -f "rust-toolchain" ]; then
+  echo "Workspace toolchain file:"
+  if [ -f "rust-toolchain.toml" ]; then
+    cat "rust-toolchain.toml"
+  else
+    cat "rust-toolchain"
+  fi
+else
+  echo "No rust-toolchain file found at repository root."
+fi
+
+echo
+echo "Tip: run \"cargo test --all-features\" from the repo root to verify your setup."