diff --git a/ddln_cli/dev.sh b/ddln_cli/dev.sh
new file mode 100755
index 0000000..62dfe6b
--- /dev/null
+++ b/ddln_cli/dev.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+user_data_dir="${1:-./profile}"
+user_id="${2:-b38b623c-c3fa-4351-9cab-50233c99fa4e}"
+
+"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome" \
+    --disable-setuid-sandbox \
+    --disable-infobars \
+    --no-first-run \
+    --hide-scrollbars \
+    --disable-notifications \
+    --disable-background-timer-throttling \
+    --disable-backgrounding-occluded-windows \
+    --disable-breakpad \
+    --disable-component-extensions-with-background-pages \
+    --disable-extensions \
+    --disable-features=TranslateUI,BlinkGenPropertyTrees \
+    --disable-ipc-flooding-protection \
+    --disable-renderer-backgrounding \
+    --enable-features=NetworkService,NetworkServiceInProcess \
+    --force-color-profile=srgb \
+    --metrics-recording-only \
+    --mute-audio \
+    --disable-gpu \
+    --repl --headless \
+    --user-data-dir="$user_data_dir" \
+    --remote-debugging-port=9332 \
+    --enable-logging=stderr \
+    "https://localhost:8443/connect/$user_id?bootstrap"
diff --git a/deno/dev.sh b/deno/dev.sh
new file mode 100755
index 0000000..eba42e0
--- /dev/null
+++ b/deno/dev.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+TLS_CERT=../certs/localhost.pem \
+TLS_KEY=../certs/localhost-key.pem \
+PORT=8443 \
+deno run --inspect --allow-all --unstable-temporal --watch ddln_server.ts
diff --git a/setup.sh b/setup.sh
new file mode 100755
index 0000000..2305f89
--- /dev/null
+++ b/setup.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+set -e
+
+# Install mkcert if needed
+if ! command -v mkcert &>/dev/null; then
+    echo "Installing mkcert..."
+    brew install mkcert
+fi
+
+# Install the local CA into the system/browser trust stores
+mkcert -install
+
+# Generate certs for localhost
+mkdir -p certs
+mkcert -cert-file certs/localhost.pem -key-file certs/localhost-key.pem localhost 127.0.0.1
+
+echo "Setup complete. Run deno/dev.sh and ddln_cli/dev.sh to start."