diff --git a/scripts/check-dev-env.sh b/scripts/check-dev-env.sh
new file mode 100755
index 0000000..273b198
--- /dev/null
+++ b/scripts/check-dev-env.sh
@@ -0,0 +1,120 @@
+#!/usr/bin/env bash
+# Check development environment prerequisites for uncaged/workflow.
+# Non-interactive — prints actionable fix instructions on failure.
+# Exit 0 = all good, exit 1 = missing dependencies.
+set -euo pipefail
+
+errors=0
+
+check() {
+  local name="$1" check_cmd="$2" fix_msg="$3"
+  if eval "$check_cmd" >/dev/null 2>&1; then
+    echo "✅ $name"
+  else
+    echo "❌ $name"
+    echo "   Fix: $fix_msg"
+    errors=$((errors + 1))
+  fi
+}
+
+check_version() {
+  local name="$1" cmd="$2" fix_msg="$3"
+  local version
+  if version=$(eval "$cmd" 2>/dev/null | head -1); then
+    echo "✅ $name — $version"
+  else
+    echo "❌ $name"
+    echo "   Fix: $fix_msg"
+    errors=$((errors + 1))
+  fi
+}
+
+echo "=== Runtime ==="
+check_version "bun" "bun --version" \
+  "curl -fsSL https://bun.sh/install | bash"
+
+check_version "node" "node --version" \
+  "Install Node.js 20+: https://nodejs.org/"
+
+check_version "python3" "python3 --version" \
+  "Install Python 3.11+: https://www.python.org/ or use uv: curl -LsSf https://astral.sh/uv/install.sh | sh && uv python install 3.11"
+
+echo ""
+echo "=== Tools ==="
+check_version "hermes" "hermes --version" \
+  "See https://github.com/hermes-ai/hermes-agent for installation. Typical: pip install hermes-agent (or uv pip install -e . for dev)"
+
+check_version "claude" "claude --version" \
+  "npm install -g @anthropic-ai/claude-code"
+
+echo ""
+echo "=== Workflow ==="
+
+# Check repo location
+REPO_DIR="${WORKFLOW_REPO:-$(cd "$(dirname "$0")/.." && pwd)}"
+check "repo at ~/repos/workflow or WORKFLOW_REPO set" \
+  "[ -f '$REPO_DIR/packages/cli-workflow/src/cli.ts' ]" \
+  "Clone the repo: git clone https://git.shazhou.work/uncaged/workflow ~/repos/workflow"
+
+# Check bun install
+check "node_modules installed" \
+  "[ -d '$REPO_DIR/node_modules' ]" \
+  "cd $REPO_DIR && bun install"
+
+# Check build
+check "packages built (dist/)" \
+  "[ -f '$REPO_DIR/packages/cli-workflow/dist/cli.js' ]" \
+  "cd $REPO_DIR && bun run build"
+
+# Check uwf is runnable
+check_version "uwf" "bun $REPO_DIR/packages/cli-workflow/src/cli.ts --version" \
+  "cd $REPO_DIR && bun install && bun run build"
+
+# Check uwf symlink
+check "uwf in PATH" \
+  "command -v uwf" \
+  "sudo ln -sf $REPO_DIR/packages/cli-workflow/dist/cli.js /usr/bin/uwf && sudo chmod +x /usr/bin/uwf"
+
+# Check uwf-hermes
+check "uwf-hermes in PATH" \
+  "command -v uwf-hermes" \
+  "bun link in packages/workflow-agent-hermes, or: echo '#!/usr/bin/env bun' > ~/.local/bin/uwf-hermes && echo 'import \"$REPO_DIR/packages/workflow-agent-hermes/src/cli.ts\"' >> ~/.local/bin/uwf-hermes && chmod +x ~/.local/bin/uwf-hermes"
+
+# Check uwf-claude-code
+check "uwf-claude-code in PATH" \
+  "command -v uwf-claude-code" \
+  "Create wrapper: echo '#!/bin/bash\nexec bun run $REPO_DIR/packages/workflow-agent-claude-code/src/cli.ts \"\$@\"' > ~/.local/bin/uwf-claude-code && chmod +x ~/.local/bin/uwf-claude-code"
+
+echo ""
+echo "=== Config ==="
+
+# Check workflow config exists
+CONFIG_DIR="${UNCAGED_WORKFLOW_STORAGE_ROOT:-$HOME/.uncaged/workflow}"
+check "config.yaml exists" \
+  "[ -f '$CONFIG_DIR/config.yaml' ]" \
+  "Run: uwf setup"
+
+# Check config has apiKey (not apiKeyEnv)
+if [ -f "$CONFIG_DIR/config.yaml" ]; then
+  check "config uses apiKey (not legacy apiKeyEnv)" \
+    "grep -q 'apiKey:' '$CONFIG_DIR/config.yaml' && ! grep -q 'apiKeyEnv:' '$CONFIG_DIR/config.yaml'" \
+    "Run: uwf setup (re-configure to write apiKey directly)"
+fi
+
+echo ""
+echo "=== Docker (optional, for E2E tests) ==="
+check_version "docker" "docker --version" \
+  "sudo apt install -y docker.io && sudo usermod -aG docker \$USER"
+
+check "docker daemon running" \
+  "docker info" \
+  "sudo systemctl start docker"
+
+echo ""
+if [ "$errors" -gt 0 ]; then
+  echo "⚠️  $errors issue(s) found. Fix them and re-run this script."
+  exit 1
+else
+  echo "🎉 All checks passed!"
+  exit 0
+fi