diff --git a/scripts/check_env.py b/scripts/check_env.py
new file mode 100644
index 00000000..596d6fc7
--- /dev/null
+++ b/scripts/check_env.py
@@ -0,0 +1,31 @@
+import os
+import sys
+from pathlib import Path
+
+REQUIRED = ["HOST", "CHAIN_ID", "PRIVATE_KEY", "FUNDER"]
+
+def load_dotenv(path: Path) -> None:
+    for line in path.read_text(encoding="utf-8").splitlines():
+        s = line.strip()
+        if not s or s.startswith("#") or "=" not in s:
+            continue
+        k, v = s.split("=", 1)
+        os.environ.setdefault(k.strip(), v.strip())
+
+def main() -> int:
+    dotenv = Path(".env")
+    if dotenv.exists():
+        load_dotenv(dotenv)
+
+    missing = [k for k in REQUIRED if not os.environ.get(k)]
+    if missing:
+        print("Missing required env vars:")
+        for k in missing:
+            print(f"- {k}")
+        return 1
+
+    print("Env looks good.")
+    return 0
+
+if __name__ == "__main__":
+    raise SystemExit(main())