feat(skill): add local n8n webhook skill draft

skills/n8n-webhook/scripts/call-webhook.sh

@@ -0,0 +1,159 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage:
+  scripts/call-webhook.sh <path-or-url> [--data '{"k":"v"}'] [--data-file payload.json] [--test] [--pretty] [--dry-run]
+
+Environment:
+  N8N_BASE_URL       Base n8n URL (default: http://192.168.153.113:18808)
+  N8N_WEBHOOK_SECRET Shared secret value for header auth (required unless --dry-run)
+  N8N_SECRET_HEADER  Header name for shared secret (default: x-openclaw-secret)
+
+Examples:
+  scripts/call-webhook.sh openclaw-ping --data '{"message":"hello"}'
+  scripts/call-webhook.sh openclaw-ping --test --data-file payload.json
+  echo '{"message":"hello"}' | scripts/call-webhook.sh openclaw-ping --pretty
+EOF
+}
+
+BASE_URL="${N8N_BASE_URL:-http://192.168.153.113:18808}"
+SECRET_HEADER="${N8N_SECRET_HEADER:-x-openclaw-secret}"
+SECRET_VALUE="${N8N_WEBHOOK_SECRET:-}"
+MODE="prod"
+PRETTY=0
+DRY_RUN=0
+PATH_OR_URL=""
+DATA=""
+DATA_FILE=""
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --help|-h)
+      usage
+      exit 0
+      ;;
+    --test)
+      MODE="test"
+      shift
+      ;;
+    --prod)
+      MODE="prod"
+      shift
+      ;;
+    --pretty)
+      PRETTY=1
+      shift
+      ;;
+    --dry-run)
+      DRY_RUN=1
+      shift
+      ;;
+    --data)
+      DATA="${2:?missing value for --data}"
+      shift 2
+      ;;
+    --data-file)
+      DATA_FILE="${2:?missing value for --data-file}"
+      shift 2
+      ;;
+    --*)
+      echo "Unknown option: $1" >&2
+      usage >&2
+      exit 2
+      ;;
+    *)
+      if [[ -z "$PATH_OR_URL" ]]; then
+        PATH_OR_URL="$1"
+      else
+        echo "Unexpected extra argument: $1" >&2
+        usage >&2
+        exit 2
+      fi
+      shift
+      ;;
+  esac
+done
+
+if [[ -z "$PATH_OR_URL" ]]; then
+  usage >&2
+  exit 2
+fi
+
+if [[ -n "$DATA" && -n "$DATA_FILE" ]]; then
+  echo "Use either --data or --data-file, not both." >&2
+  exit 2
+fi
+
+if [[ -n "$DATA_FILE" ]]; then
+  DATA="$(cat "$DATA_FILE")"
+elif [[ -n "$DATA" ]]; then
+  :
+elif ! [[ -t 0 ]]; then
+  DATA="$(cat)"
+else
+  DATA='{}'
+fi
+
+python3 - <<'PY' "$DATA"
+import json, sys
+json.loads(sys.argv[1])
+PY
+
+if [[ "$PATH_OR_URL" =~ ^https?:// ]]; then
+  URL="$PATH_OR_URL"
+else
+  PREFIX="webhook"
+  [[ "$MODE" == "test" ]] && PREFIX="webhook-test"
+  URL="${BASE_URL%/}/${PREFIX}/${PATH_OR_URL#/}"
+fi
+
+if [[ "$DRY_RUN" -eq 1 ]]; then
+  printf 'POST %s\n' "$URL"
+  printf 'Header: Content-Type: application/json\n'
+  if [[ -n "$SECRET_VALUE" ]]; then
+    printf 'Header: %s: [set]\n' "$SECRET_HEADER"
+  else
+    printf 'Header: %s: [missing]\n' "$SECRET_HEADER"
+  fi
+  printf 'Body: %s\n' "$DATA"
+  exit 0
+fi
+
+if [[ -z "$SECRET_VALUE" ]]; then
+  echo "N8N_WEBHOOK_SECRET is required for non-dry-run calls." >&2
+  exit 2
+fi
+
+BODY_FILE="$(mktemp)"
+trap 'rm -f "$BODY_FILE"' EXIT
+
+HTTP_CODE="$({
+  curl -sS \
+    -o "$BODY_FILE" \
+    -w '%{http_code}' \
+    -X POST "$URL" \
+    -H 'Content-Type: application/json' \
+    -H "$SECRET_HEADER: $SECRET_VALUE" \
+    --data "$DATA"
+} || true)"
+
+if [[ -z "$HTTP_CODE" ]]; then
+  echo "Request failed before receiving an HTTP status." >&2
+  cat "$BODY_FILE" >&2 || true
+  exit 1
+fi
+
+if [[ "$HTTP_CODE" =~ ^2[0-9][0-9]$ ]]; then
+  if [[ "$PRETTY" -eq 1 ]]; then
+    python3 -m json.tool "$BODY_FILE" 2>/dev/null || cat "$BODY_FILE"
+  else
+    cat "$BODY_FILE"
+  fi
+  exit 0
+fi
+
+echo "n8n webhook call failed with HTTP $HTTP_CODE" >&2
+cat "$BODY_FILE" >&2 || true
+exit 1