diff --git a/env.sample b/env.sample
new file mode 100644
index 0000000..bfe0669
--- /dev/null
+++ b/env.sample
@@ -0,0 +1,8 @@
+# Example environment variables for kalshi-starter-code-python
+
+# API credentials for Kalshi
+KALSHI_API_KEY=your_api_key_here
+KALSHI_API_SECRET=your_api_secret_here
+
+# Environment: "demo" or "prod"
+KALSHI_ENV=demo
diff --git a/scripts/format_and_lint.sh b/scripts/format_and_lint.sh
new file mode 100644
index 0000000..10501fa
--- /dev/null
+++ b/scripts/format_and_lint.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if command -v black >/dev/null 2>&1; then
+  echo "Running black..."
+  black .
+else
+  echo "black is not installed, skipping formatting."
+fi
+
+if command -v ruff >/dev/null 2>&1; then
+  echo "Running ruff..."
+  ruff check .
+else
+  echo "ruff is not installed, skipping linting."
+fi