diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
new file mode 100644
index 0000000..6c3256a
--- /dev/null
+++ b/.github/workflows/shellcheck.yml
@@ -0,0 +1,14 @@
+name: shellcheck-validation
+
+on: push
+
+jobs:
+  shellcheck:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v2
+
+      - name: Execute ShellCheck
+        run: shellcheck scripts/*.sh
diff --git a/scripts/yt-api-helper.sh b/scripts/yt-api-helper.sh
new file mode 100755
index 0000000..25ed099
--- /dev/null
+++ b/scripts/yt-api-helper.sh
@@ -0,0 +1,410 @@
+#!/bin/sh
+# shellcheck disable=SC2236
+
+
+print_help()
+{
+	echo "Usage: yt-api-helper  -i [-c <client>] [-e <endpoint>]"
+	echo "Usage: yt-api-helper  -e <endpoint> -d <data>"
+	echo ""
+	echo "Options:"
+	echo "  -c,--client       Client to use. Pass 'help' to this option to get"
+	echo "                      the list of supported clients"
+	echo "  -d,--data         Raw data to send to the API"
+	echo "  -e,--endpoint     Youtube endpoint to request. Pass 'help' to this"
+	echo "                      option to get the list of supported endpoints"
+	echo "  -h,--help         Show this help"
+	echo "  -i,--interactive  Run in interactive mode"
+	echo "  -o,--output       Print output to file instead of stdout"
+	echo ""
+}
+
+print_clients()
+{
+	echo "Available clients:"
+	echo "web"
+	echo "web-embed"
+	echo "web-mobile"
+	echo "android"
+	echo "android-embed"
+}
+
+print_endpoints()
+{
+	echo "Available endpoints:"
+	echo "browse"
+	echo "browse-continuation"
+	echo "next"
+	echo "next-continuation"
+	echo "player"
+	echo "search"
+	echo "resolve"
+}
+
+
+query_with_default()
+{
+	prompt="$1"
+	default="$2"
+
+	printf "\n%s [%s]: " "$prompt" "$default" >&2
+	read -r data
+
+	if [ -z "$data" ]; then
+		echo "$default"
+	else
+		echo "$data"
+	fi
+}
+
+query_with_error()
+{
+	prompt="$1"
+	error_message="$2"
+
+	printf "\n%s []: " "$prompt" >&2
+	read -r data
+
+	if [ -z "$data" ]; then
+		echo "Error: $error_message"
+		exit 1
+	else
+		echo "$data"
+	fi
+}
+
+
+is_arg()
+{
+	case $1 in
+		-c|--client)      true;;
+		-d|--data)        true;;
+		-e|--endpoint)    true;;
+		-h|--help)        true;;
+		-i|--interactive) true;;
+		-o|--output)      true;;
+		*)                false;;
+	esac
+}
+
+
+#
+# Parameters init
+#
+
+interactive=false
+
+client_option=""
+endpoint_option=""
+
+data=""
+
+
+#
+# Interactive client selection
+#
+
+while :; do
+	# Exit if no more arguments to parse
+	if [ $# -eq 0 ]; then break; fi
+
+	case $1 in
+		-c|--client)
+			shift
+
+			if [ $# -eq 0 ] || is_arg "$1"; then
+				echo "Error: missing argument after -c/--client"
+				exit 2
+			fi
+
+			client_option=$1
+		;;
+
+		-d|--data)
+			shift
+
+			if [ $# -eq 0 ] || is_arg "$1"; then
+				echo "Error: missing argument after -d/--data"
+				exit 2
+			fi
+
+			data=$1
+		;;
+
+		-e|--endpoint)
+			shift
+
+			if [ $# -eq 0 ] || is_arg "$1"; then
+				echo "Error: missing argument after -e/--endpoint"
+				exit 2
+			fi
+
+			endpoint_option=$1
+		;;
+
+		-h|--help)
+			print_help
+			exit 0
+		;;
+
+		-i|--interactive)
+			interactive=true
+		;;
+
+		-o|--output)
+			shift
+
+			if [ $# -eq 0 ] || is_arg "$1"; then
+				echo "Error: missing argument after -o/--output"
+				exit 2
+			fi
+
+			output="$1"
+		;;
+
+		*)
+			echo "Error: unknown argument '$1'"
+			exit 2
+		;;
+	esac
+
+	shift
+done
+
+
+#
+# Input validation
+#
+
+if [ ! -z "$data" ]; then
+	# Can't pass data in interactive mode
+	if [ $interactive = true ]; then
+		echo "Error: -d/--data can't be used with -i/--interactive"
+		exit 2
+	fi
+
+	# Can't pass client in non-interactive mode (must be part of data)
+	if [ ! -z "$client_option" ]; then
+		echo "Error: -c/--client can't be used with -d/--data"
+		exit 2
+	fi
+
+	# Endpoint must be given if non-interactive mode
+	if [ -z "$endpoint_option" ]; then
+		echo "Error: In non-interactive mode, an endpoint must be passed with -e/--endpoint"
+		exit 2
+	fi
+fi
+
+if [ -z "$data" ] && [ $interactive = false ]; then
+	# Data must be given if non-interactive mode
+	echo "Error: In non-interactive mode, data must be passed with -d/--data"
+	exit 2
+fi
+
+if [ -z "$output" ] && [ $interactive = true ]; then
+	printf "\nIt is recommended to use --output in interactive mode.\nContinue? [y/N]: "
+	read -r confirm
+
+	if [ -z "$confirm" ]; then confirm="n"; fi
+
+	case $confirm in
+		[Yy]|[Yy][Ee][Ss]) ;;
+		*) exit 0;;
+	esac
+fi
+
+
+#
+# Client selection
+#
+
+if [ -z "$client_option" ]; then
+	client_option=$(query_with_default "Enter a client to use" "web")
+fi
+
+case $client_option in
+	help)
+		print_clients
+		exit 0
+	;;
+
+	web)
+		apikey="AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
+		client_name="WEB"
+		client_vers="2.20210721.00.00"
+	;;
+
+	web-embed)
+		apikey="AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
+		client_name="WEB_EMBEDDED_PLAYER"
+		client_vers="1.20210721.1.0"
+	;;
+
+	web-mobile)
+		apikey="AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
+		client_name="MWEB"
+		client_vers="2.20210726.08.00"
+	;;
+
+	android)
+		apikey="AIzaSyA8eiZmM1FaDVjRy-df2KTyQ_vz_yYM39w"
+		client_name="ANDROID"
+		client_vers="16.20"
+	;;
+
+	android-embed)
+		apikey="AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
+		client_name="ANDROID_EMBEDDED_PLAYER"
+		client_vers="16.20"
+	;;
+
+	*)
+		echo "Error: Unknown client '$client_option'"
+		echo ""
+		print_clients
+		exit 1
+	;;
+esac
+
+
+#
+# Endpoint selection
+#
+
+if [ -z "$endpoint_option" ]; then
+	endpoint_option=$(query_with_default "Enter an endpoint to request" "")
+fi
+
+case $endpoint_option in
+	help)
+		print_endpoints
+		exit 0
+		;;
+
+	browse)
+		endpoint="youtubei/v1/browse"
+
+		if [ $interactive = true ]; then
+			browse_id=$(query_with_default "Enter browse ID" "UCXuqSBlHAE6Xw-yeJA0Tunw")
+			partial_data="\"browseId\":\"${browse_id}\""
+		fi
+	;;
+
+	browse-cont*|browse-tok*)
+		endpoint="youtubei/v1/browse"
+
+		if [ $interactive = true ]; then
+			token=$(query_with_error "Enter continuation token" "token required")
+			partial_data="\"continuation\":\"${token}\""
+		fi
+	;;
+
+	player|next)
+		endpoint="youtubei/v1/$endpoint_option"
+
+		if [ $interactive = true ]; then
+			vid=$(query_with_default "Enter video ID" "dQw4w9WgXcQ")
+			partial_data="\"videoId\":\"${vid}\""
+
+		fi
+	;;
+
+	next-cont*|next-tok*)
+		endpoint="youtubei/v1/next"
+
+		if [ $interactive = true ]; then
+			token=$(query_with_error "Enter continuation token" "token required")
+			partial_data="\"continuation\":\"${token}\""
+		fi
+	;;
+
+	search)
+		endpoint="youtubei/v1/search"
+
+		if [ $interactive = true ]; then
+			# Get search query, and escape backslashes and double quotes
+			query=$(
+				query_with_error "Enter your search query" "search term required" |
+				sed -e 's/\\/\\\\/g' -e 's/"/\\"/g'
+			)
+			partial_data="\"query\":\"${query}\""
+		fi
+	;;
+
+	resolve)
+		endpoint="navigation/resolve_url"
+
+		if [ $interactive = true ]; then
+			url=$(query_with_error "Enter URL" "URL required")
+			partial_data="\"url\":\"${url}\""
+		fi
+	;;
+
+	*)
+		echo "Error: Unknown endpoint '$endpoint_option'"
+		echo ""
+		print_clients
+		exit 1
+	;;
+esac
+
+
+#
+# Interactively request additional parameters for the supported endpoints
+#
+
+if [ $interactive = true ]
+then
+	case $endpoint_option in
+
+	browse|player|search)
+		params=$(query_with_default "Enter optional parameters (base64-encoded protobuf)" "")
+
+		if [ ! -z "$params" ]; then
+			partial_data="${partial_data},\"params\":\"${params}\""
+		fi
+	;;
+	esac
+fi
+
+# new line
+echo
+
+
+#
+# Interactive language/region selection
+#
+
+if [ $interactive = true ]; then
+	hl=$(query_with_default "Enter content language (hl)" "en")
+	gl=$(query_with_default "Enter content region (gl)"   "US")
+
+	client="\"clientName\":\"${client_name}\",\"clientVersion\":\"${client_vers}\",\"hl\":\"${hl}\",\"gl\":\"${gl}\""
+fi
+
+
+#
+# Final command
+#
+
+if [ $interactive = true ]; then
+	data="{\"context\":{\"client\":{$client}},$partial_data}"
+
+	# Basic debug
+	echo "sending:"
+	echo "$data" | sed 's/{/{\n/g; s/}/\n}/g; s/,/,\n/g'
+fi
+
+
+url="https://www.youtube.com/${endpoint}?key=${apikey}"
+
+# Headers
+hdr_ct='Content-Type: application/json; charset=utf-8'
+hdr_ua='User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0'
+
+# Default to STDOUT if no output file was given
+if [ -z "$output" ]; then output='-'; fi
+
+# Run!
+curl --compressed -o "$output" -H "$hdr_ct" -H "$hdr_ua" --data "$data" "$url"