feat: add n8n integration with MCP Client Tool support
- Add N8N_MODE environment variable for n8n-specific behavior - Implement HTTP Streamable transport with multiple session support - Add protocol version endpoint (GET /mcp) for n8n compatibility - Support multiple initialize requests for stateless n8n clients - Add Docker configuration for n8n deployment - Add test script with persistent volume support - Add comprehensive unit tests for n8n mode - Fix session management to handle per-request transport pattern BREAKING CHANGE: Server now creates new transport for each initialize request when running in n8n mode to support n8n's stateless client architecture 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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czlonkowski
154
scripts/test-n8n-integration.sh
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154
scripts/test-n8n-integration.sh
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#!/bin/bash
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# Script to test n8n integration with n8n-mcp server
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set -e
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echo "🚀 Starting n8n integration test environment..."
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# Colors for output
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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RED='\033[0;31m'
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NC='\033[0m' # No Color
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# Configuration
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N8N_PORT=5678
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MCP_PORT=3001
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AUTH_TOKEN="test-token-for-n8n-testing-minimum-32-chars"
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# n8n data directory for persistence
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N8N_DATA_DIR="$HOME/.n8n-mcp-test"
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# Function to cleanup on exit
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cleanup() {
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echo -e "\n${YELLOW}🧹 Cleaning up...${NC}"
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# Stop n8n container
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if docker ps -q -f name=n8n-test > /dev/null 2>&1; then
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echo "Stopping n8n container..."
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docker stop n8n-test >/dev/null 2>&1 || true
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docker rm n8n-test >/dev/null 2>&1 || true
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fi
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# Kill MCP server if running
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if [ -n "$MCP_PID" ] && kill -0 $MCP_PID 2>/dev/null; then
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echo "Stopping MCP server..."
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kill $MCP_PID 2>/dev/null || true
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fi
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echo -e "${GREEN}✅ Cleanup complete${NC}"
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}
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# Set trap to cleanup on exit
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trap cleanup EXIT INT TERM
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# Check if we're in the right directory
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if [ ! -f "package.json" ] || [ ! -d "dist" ]; then
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echo -e "${RED}❌ Error: Must run from n8n-mcp directory${NC}"
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echo "Please cd to /Users/romualdczlonkowski/Pliki/n8n-mcp/n8n-mcp"
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exit 1
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fi
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# Always build the project to ensure latest changes
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echo -e "${YELLOW}📦 Building project...${NC}"
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npm run build
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# Create n8n data directory if it doesn't exist
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if [ ! -d "$N8N_DATA_DIR" ]; then
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echo -e "${YELLOW}📁 Creating n8n data directory: $N8N_DATA_DIR${NC}"
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mkdir -p "$N8N_DATA_DIR"
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fi
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# Start n8n in Docker with persistent volume
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echo -e "\n${GREEN}🐳 Starting n8n container with persistent data...${NC}"
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docker run -d \
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--name n8n-test \
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-p ${N8N_PORT}:5678 \
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-v "${N8N_DATA_DIR}:/home/node/.n8n" \
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-e N8N_BASIC_AUTH_ACTIVE=false \
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-e N8N_HOST=localhost \
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-e N8N_PORT=5678 \
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-e N8N_PROTOCOL=http \
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-e NODE_ENV=development \
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-e N8N_COMMUNITY_PACKAGES_ALLOW_TOOL_USAGE=true \
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n8nio/n8n:latest
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# Wait for n8n to be ready
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echo -e "${YELLOW}⏳ Waiting for n8n to start...${NC}"
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for i in {1..30}; do
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if curl -s http://localhost:${N8N_PORT}/ >/dev/null 2>&1; then
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echo -e "${GREEN}✅ n8n is ready!${NC}"
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break
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fi
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if [ $i -eq 30 ]; then
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echo -e "${RED}❌ n8n failed to start${NC}"
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exit 1
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fi
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sleep 1
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done
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# Start MCP server
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echo -e "\n${GREEN}🚀 Starting MCP server in n8n mode...${NC}"
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N8N_MODE=true \
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MCP_MODE=http \
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AUTH_TOKEN="${AUTH_TOKEN}" \
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PORT=${MCP_PORT} \
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node dist/mcp/index.js > /tmp/mcp-server.log 2>&1 &
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MCP_PID=$!
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# Show log file location
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echo -e "${YELLOW}📄 MCP server logs: /tmp/mcp-server.log${NC}"
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# Wait for MCP server to be ready
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echo -e "${YELLOW}⏳ Waiting for MCP server to start...${NC}"
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for i in {1..10}; do
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if curl -s http://localhost:${MCP_PORT}/health >/dev/null 2>&1; then
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echo -e "${GREEN}✅ MCP server is ready!${NC}"
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break
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fi
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if [ $i -eq 10 ]; then
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echo -e "${RED}❌ MCP server failed to start${NC}"
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exit 1
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fi
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sleep 1
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done
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# Show status and test endpoints
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echo -e "\n${GREEN}🎉 Both services are running!${NC}"
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echo -e "\n📍 Service URLs:"
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echo -e " • n8n: http://localhost:${N8N_PORT}"
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echo -e " • MCP server: http://localhost:${MCP_PORT}"
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echo -e "\n🔑 Auth token: ${AUTH_TOKEN}"
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echo -e "\n💾 n8n data stored in: ${N8N_DATA_DIR}"
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echo -e " (Your workflows, credentials, and settings are preserved between runs)"
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# Test MCP protocol endpoint
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echo -e "\n${YELLOW}🧪 Testing MCP protocol endpoint...${NC}"
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echo "Response from GET /mcp:"
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curl -s http://localhost:${MCP_PORT}/mcp | jq '.' || curl -s http://localhost:${MCP_PORT}/mcp
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# Test MCP initialization
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echo -e "\n${YELLOW}🧪 Testing MCP initialization...${NC}"
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echo "Response from POST /mcp (initialize):"
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curl -s -X POST http://localhost:${MCP_PORT}/mcp \
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-H "Authorization: Bearer ${AUTH_TOKEN}" \
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-H "Content-Type: application/json" \
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-d '{"jsonrpc":"2.0","method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{}},"id":1}' \
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| jq '.' || echo "(Install jq for pretty JSON output)"
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echo -e "\n${GREEN}✅ Setup complete!${NC}"
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echo -e "\n📝 Next steps:"
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echo -e " 1. Open n8n at http://localhost:${N8N_PORT}"
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echo -e " 2. Create a workflow with the AI Agent node"
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echo -e " 3. Add MCP Client Tool node"
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echo -e " 4. Configure it with:"
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echo -e " • Transport: HTTP"
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echo -e " • URL: http://host.docker.internal:${MCP_PORT}/mcp"
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echo -e " • Auth: Bearer ${AUTH_TOKEN}"
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echo -e "\n${YELLOW}Press Ctrl+C to stop both services${NC}"
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echo -e "\n${YELLOW}📋 To monitor MCP logs: tail -f /tmp/mcp-server.log${NC}"
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echo -e "${YELLOW}📋 To monitor n8n logs: docker logs -f n8n-test${NC}"
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# Wait for interrupt
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wait $MCP_PID
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