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>
This commit is contained in:
czlonkowski
@@ -1,78 +0,0 @@
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#!/usr/bin/env node
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/**
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* Debug the essentials implementation
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*/
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const { N8NDocumentationMCPServer } = require('../dist/mcp/server');
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const { PropertyFilter } = require('../dist/services/property-filter');
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const { ExampleGenerator } = require('../dist/services/example-generator');
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async function debugEssentials() {
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console.log('🔍 Debugging essentials implementation\n');
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try {
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// Initialize server
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const server = new N8NDocumentationMCPServer();
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await new Promise(resolve => setTimeout(resolve, 1000));
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const nodeType = 'nodes-base.httpRequest';
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// Step 1: Get raw node info
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console.log('Step 1: Getting raw node info...');
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const nodeInfo = await server.executeTool('get_node_info', { nodeType });
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console.log('✅ Got node info');
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console.log(' Node type:', nodeInfo.nodeType);
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console.log(' Display name:', nodeInfo.displayName);
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console.log(' Properties count:', nodeInfo.properties?.length);
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console.log(' Properties type:', typeof nodeInfo.properties);
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console.log(' First property:', nodeInfo.properties?.[0]?.name);
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// Step 2: Test PropertyFilter directly
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console.log('\nStep 2: Testing PropertyFilter...');
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const properties = nodeInfo.properties || [];
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console.log(' Input properties count:', properties.length);
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const essentials = PropertyFilter.getEssentials(properties, nodeType);
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console.log(' Essential results:');
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console.log(' - Required:', essentials.required?.length || 0);
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console.log(' - Common:', essentials.common?.length || 0);
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console.log(' - Required names:', essentials.required?.map(p => p.name).join(', ') || 'none');
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console.log(' - Common names:', essentials.common?.map(p => p.name).join(', ') || 'none');
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// Step 3: Test ExampleGenerator
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console.log('\nStep 3: Testing ExampleGenerator...');
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const examples = ExampleGenerator.getExamples(nodeType, essentials);
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console.log(' Example keys:', Object.keys(examples));
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console.log(' Minimal example:', JSON.stringify(examples.minimal || {}, null, 2));
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// Step 4: Test the full tool
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console.log('\nStep 4: Testing get_node_essentials tool...');
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const essentialsResult = await server.executeTool('get_node_essentials', { nodeType });
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console.log('✅ Tool executed');
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console.log(' Result keys:', Object.keys(essentialsResult));
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console.log(' Node type from result:', essentialsResult.nodeType);
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console.log(' Required props:', essentialsResult.requiredProperties?.length || 0);
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console.log(' Common props:', essentialsResult.commonProperties?.length || 0);
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// Compare property counts
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console.log('\n📊 Summary:');
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console.log(' Full properties:', nodeInfo.properties?.length || 0);
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console.log(' Essential properties:',
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(essentialsResult.requiredProperties?.length || 0) +
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(essentialsResult.commonProperties?.length || 0)
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);
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console.log(' Reduction:',
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Math.round((1 - ((essentialsResult.requiredProperties?.length || 0) +
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(essentialsResult.commonProperties?.length || 0)) /
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(nodeInfo.properties?.length || 1)) * 100) + '%'
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);
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} catch (error) {
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console.error('\n❌ Error:', error);
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console.error('Stack:', error.stack);
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}
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process.exit(0);
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}
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debugEssentials().catch(console.error);
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@@ -1,48 +0,0 @@
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#!/usr/bin/env node
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import { N8NDocumentationMCPServer } from '../src/mcp/server';
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async function debugFuzzy() {
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const server = new N8NDocumentationMCPServer();
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await new Promise(resolve => setTimeout(resolve, 1000));
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// Get the actual implementation
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const serverAny = server as any;
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// Test nodes we expect to find
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const testNodes = [
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{ node_type: 'nodes-base.slack', display_name: 'Slack', description: 'Consume Slack API' },
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{ node_type: 'nodes-base.webhook', display_name: 'Webhook', description: 'Handle webhooks' },
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{ node_type: 'nodes-base.httpRequest', display_name: 'HTTP Request', description: 'Make HTTP requests' },
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{ node_type: 'nodes-base.emailSend', display_name: 'Send Email', description: 'Send emails' }
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];
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const testQueries = ['slak', 'webook', 'htpp', 'emial'];
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console.log('Testing fuzzy scoring...\n');
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for (const query of testQueries) {
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console.log(`\nQuery: "${query}"`);
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console.log('-'.repeat(40));
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for (const node of testNodes) {
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const score = serverAny.calculateFuzzyScore(node, query);
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const distance = serverAny.getEditDistance(query, node.display_name.toLowerCase());
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console.log(`${node.display_name.padEnd(15)} - Score: ${score.toFixed(0).padStart(4)}, Distance: ${distance}`);
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}
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// Test actual search
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console.log('\nActual search result:');
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const result = await server.executeTool('search_nodes', {
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query: query,
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mode: 'FUZZY',
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limit: 5
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});
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console.log(`Found ${result.results.length} results`);
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if (result.results.length > 0) {
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console.log('Top result:', result.results[0].displayName);
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}
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}
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}
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debugFuzzy().catch(console.error);
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@@ -1,56 +0,0 @@
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#!/usr/bin/env node
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/**
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* Debug script to check node data structure
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*/
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const { N8NDocumentationMCPServer } = require('../dist/mcp/server');
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async function debugNode() {
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console.log('🔍 Debugging node data\n');
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try {
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// Initialize server
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const server = new N8NDocumentationMCPServer();
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await new Promise(resolve => setTimeout(resolve, 1000));
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// Get node info directly
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const nodeType = 'nodes-base.httpRequest';
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console.log(`Checking node: ${nodeType}\n`);
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try {
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const nodeInfo = await server.executeTool('get_node_info', { nodeType });
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console.log('Node info retrieved successfully');
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console.log('Node type:', nodeInfo.nodeType);
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console.log('Has properties:', !!nodeInfo.properties);
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console.log('Properties count:', nodeInfo.properties?.length || 0);
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console.log('Has operations:', !!nodeInfo.operations);
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console.log('Operations:', nodeInfo.operations);
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console.log('Operations type:', typeof nodeInfo.operations);
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console.log('Operations length:', nodeInfo.operations?.length);
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// Check raw data
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console.log('\n📊 Raw data check:');
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console.log('properties_schema type:', typeof nodeInfo.properties_schema);
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console.log('operations type:', typeof nodeInfo.operations);
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// Check if operations is a string that needs parsing
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if (typeof nodeInfo.operations === 'string') {
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console.log('\nOperations is a string, trying to parse:');
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console.log('Operations string:', nodeInfo.operations);
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console.log('Operations length:', nodeInfo.operations.length);
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console.log('First 100 chars:', nodeInfo.operations.substring(0, 100));
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}
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} catch (error) {
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console.error('Error getting node info:', error);
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}
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} catch (error) {
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console.error('Fatal error:', error);
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}
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process.exit(0);
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}
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debugNode().catch(console.error);
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@@ -1,114 +0,0 @@
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#!/usr/bin/env npx tsx
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/**
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* Debug template search issues
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*/
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import { createDatabaseAdapter } from '../src/database/database-adapter';
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import { TemplateRepository } from '../src/templates/template-repository';
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async function debug() {
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console.log('🔍 Debugging template search...\n');
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const db = await createDatabaseAdapter('./data/nodes.db');
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// Check FTS5 support
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const hasFTS5 = db.checkFTS5Support();
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console.log(`FTS5 support: ${hasFTS5}`);
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// Check template count
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const templateCount = db.prepare('SELECT COUNT(*) as count FROM templates').get() as { count: number };
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console.log(`Total templates: ${templateCount.count}`);
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// Check FTS5 tables
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const ftsTables = db.prepare(`
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SELECT name FROM sqlite_master
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WHERE type IN ('table', 'virtual') AND name LIKE 'templates_fts%'
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ORDER BY name
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`).all() as { name: string }[];
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console.log('\nFTS5 tables:');
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ftsTables.forEach(t => console.log(` - ${t.name}`));
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// Check FTS5 content
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if (hasFTS5) {
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try {
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const ftsCount = db.prepare('SELECT COUNT(*) as count FROM templates_fts').get() as { count: number };
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console.log(`\nFTS5 entries: ${ftsCount.count}`);
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} catch (error) {
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console.log('\nFTS5 query error:', error);
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}
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}
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// Test template repository
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console.log('\n📋 Testing TemplateRepository...');
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const repo = new TemplateRepository(db);
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// Test different searches
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const searches = ['webhook', 'api', 'automation'];
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for (const query of searches) {
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console.log(`\n🔎 Searching for "${query}"...`);
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// Direct SQL LIKE search
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const likeResults = db.prepare(`
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SELECT COUNT(*) as count FROM templates
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WHERE name LIKE ? OR description LIKE ?
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`).get(`%${query}%`, `%${query}%`) as { count: number };
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console.log(` LIKE search matches: ${likeResults.count}`);
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// Repository search
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try {
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const repoResults = repo.searchTemplates(query, 5);
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console.log(` Repository search returned: ${repoResults.length} results`);
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if (repoResults.length > 0) {
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console.log(` First result: ${repoResults[0].name}`);
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}
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} catch (error) {
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console.log(` Repository search error:`, error);
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}
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// Direct FTS5 search if available
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if (hasFTS5) {
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try {
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const ftsQuery = `"${query}"`;
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const ftsResults = db.prepare(`
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SELECT COUNT(*) as count
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FROM templates t
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JOIN templates_fts ON t.id = templates_fts.rowid
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WHERE templates_fts MATCH ?
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`).get(ftsQuery) as { count: number };
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console.log(` Direct FTS5 matches: ${ftsResults.count}`);
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} catch (error) {
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console.log(` Direct FTS5 error:`, error);
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}
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}
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}
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// Check if templates_fts is properly synced
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if (hasFTS5) {
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console.log('\n🔄 Checking FTS5 sync...');
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try {
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// Get a few template IDs and check if they're in FTS
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const templates = db.prepare('SELECT id, name FROM templates LIMIT 5').all() as { id: number, name: string }[];
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for (const template of templates) {
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try {
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const inFTS = db.prepare('SELECT rowid FROM templates_fts WHERE rowid = ?').get(template.id);
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console.log(` Template ${template.id} "${template.name.substring(0, 30)}...": ${inFTS ? 'IN FTS' : 'NOT IN FTS'}`);
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} catch (error) {
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console.log(` Error checking template ${template.id}:`, error);
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}
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}
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} catch (error) {
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console.log(' FTS sync check error:', error);
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}
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}
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db.close();
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}
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// Run if called directly
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if (require.main === module) {
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debug().catch(console.error);
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}
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export { debug };
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@@ -1,113 +0,0 @@
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#!/usr/bin/env npx tsx
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/**
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* Test MCP search behavior
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*/
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import { createDatabaseAdapter } from '../src/database/database-adapter';
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import { TemplateService } from '../src/templates/template-service';
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import { TemplateRepository } from '../src/templates/template-repository';
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async function testMCPSearch() {
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console.log('🔍 Testing MCP search behavior...\n');
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// Set MCP_MODE to simulate Docker environment
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process.env.MCP_MODE = 'stdio';
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console.log('Environment: MCP_MODE =', process.env.MCP_MODE);
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const db = await createDatabaseAdapter('./data/nodes.db');
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// Test 1: Direct repository search
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console.log('\n1️⃣ Testing TemplateRepository directly:');
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const repo = new TemplateRepository(db);
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try {
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const repoResults = repo.searchTemplates('webhook', 5);
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console.log(` Repository search returned: ${repoResults.length} results`);
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if (repoResults.length > 0) {
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console.log(` First result: ${repoResults[0].name}`);
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}
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} catch (error) {
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console.log(' Repository search error:', error);
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}
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// Test 2: Service layer search (what MCP uses)
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console.log('\n2️⃣ Testing TemplateService (MCP layer):');
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const service = new TemplateService(db);
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try {
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const serviceResults = await service.searchTemplates('webhook', 5);
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console.log(` Service search returned: ${serviceResults.length} results`);
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if (serviceResults.length > 0) {
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console.log(` First result: ${serviceResults[0].name}`);
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}
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} catch (error) {
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console.log(' Service search error:', error);
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}
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// Test 3: Test with empty query
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console.log('\n3️⃣ Testing with empty query:');
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try {
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const emptyResults = await service.searchTemplates('', 5);
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console.log(` Empty query returned: ${emptyResults.length} results`);
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} catch (error) {
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console.log(' Empty query error:', error);
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}
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// Test 4: Test getTemplatesForTask (which works)
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console.log('\n4️⃣ Testing getTemplatesForTask (control):');
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try {
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const taskResults = await service.getTemplatesForTask('webhook_processing');
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console.log(` Task search returned: ${taskResults.length} results`);
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if (taskResults.length > 0) {
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console.log(` First result: ${taskResults[0].name}`);
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}
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} catch (error) {
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console.log(' Task search error:', error);
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}
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// Test 5: Direct SQL queries
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console.log('\n5️⃣ Testing direct SQL queries:');
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try {
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// Count templates
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const count = db.prepare('SELECT COUNT(*) as count FROM templates').get() as { count: number };
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console.log(` Total templates: ${count.count}`);
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// Test LIKE search
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const likeResults = db.prepare(`
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SELECT COUNT(*) as count FROM templates
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WHERE name LIKE '%webhook%' OR description LIKE '%webhook%'
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`).get() as { count: number };
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console.log(` LIKE search for 'webhook': ${likeResults.count} results`);
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// Check if FTS5 table exists
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const ftsExists = db.prepare(`
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SELECT name FROM sqlite_master
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WHERE type='table' AND name='templates_fts'
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`).get() as { name: string } | undefined;
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console.log(` FTS5 table exists: ${ftsExists ? 'Yes' : 'No'}`);
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if (ftsExists) {
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// Test FTS5 search
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try {
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const ftsResults = db.prepare(`
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SELECT COUNT(*) as count FROM templates t
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JOIN templates_fts ON t.id = templates_fts.rowid
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WHERE templates_fts MATCH 'webhook'
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`).get() as { count: number };
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console.log(` FTS5 search for 'webhook': ${ftsResults.count} results`);
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} catch (ftsError) {
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console.log(` FTS5 search error:`, ftsError);
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}
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}
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} catch (error) {
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console.log(' Direct SQL error:', error);
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}
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db.close();
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}
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// Run if called directly
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if (require.main === module) {
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testMCPSearch().catch(console.error);
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}
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export { testMCPSearch };
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154
scripts/test-n8n-integration.sh
Executable file
154
scripts/test-n8n-integration.sh
Executable file
@@ -0,0 +1,154 @@
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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 $MCP_PID 2>/dev/null || true
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fi
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||||
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||||
echo -e "${GREEN}✅ Cleanup complete${NC}"
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}
|
||||
|
||||
# Set trap to cleanup on exit
|
||||
trap cleanup EXIT INT TERM
|
||||
|
||||
# Check if we're in the right directory
|
||||
if [ ! -f "package.json" ] || [ ! -d "dist" ]; then
|
||||
echo -e "${RED}❌ Error: Must run from n8n-mcp directory${NC}"
|
||||
echo "Please cd to /Users/romualdczlonkowski/Pliki/n8n-mcp/n8n-mcp"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Always build the project to ensure latest changes
|
||||
echo -e "${YELLOW}📦 Building project...${NC}"
|
||||
npm run build
|
||||
|
||||
# Create n8n data directory if it doesn't exist
|
||||
if [ ! -d "$N8N_DATA_DIR" ]; then
|
||||
echo -e "${YELLOW}📁 Creating n8n data directory: $N8N_DATA_DIR${NC}"
|
||||
mkdir -p "$N8N_DATA_DIR"
|
||||
fi
|
||||
|
||||
# Start n8n in Docker with persistent volume
|
||||
echo -e "\n${GREEN}🐳 Starting n8n container with persistent data...${NC}"
|
||||
docker run -d \
|
||||
--name n8n-test \
|
||||
-p ${N8N_PORT}:5678 \
|
||||
-v "${N8N_DATA_DIR}:/home/node/.n8n" \
|
||||
-e N8N_BASIC_AUTH_ACTIVE=false \
|
||||
-e N8N_HOST=localhost \
|
||||
-e N8N_PORT=5678 \
|
||||
-e N8N_PROTOCOL=http \
|
||||
-e NODE_ENV=development \
|
||||
-e N8N_COMMUNITY_PACKAGES_ALLOW_TOOL_USAGE=true \
|
||||
n8nio/n8n:latest
|
||||
|
||||
# Wait for n8n to be ready
|
||||
echo -e "${YELLOW}⏳ Waiting for n8n to start...${NC}"
|
||||
for i in {1..30}; do
|
||||
if curl -s http://localhost:${N8N_PORT}/ >/dev/null 2>&1; then
|
||||
echo -e "${GREEN}✅ n8n is ready!${NC}"
|
||||
break
|
||||
fi
|
||||
if [ $i -eq 30 ]; then
|
||||
echo -e "${RED}❌ n8n failed to start${NC}"
|
||||
exit 1
|
||||
fi
|
||||
sleep 1
|
||||
done
|
||||
|
||||
# Start MCP server
|
||||
echo -e "\n${GREEN}🚀 Starting MCP server in n8n mode...${NC}"
|
||||
N8N_MODE=true \
|
||||
MCP_MODE=http \
|
||||
AUTH_TOKEN="${AUTH_TOKEN}" \
|
||||
PORT=${MCP_PORT} \
|
||||
node dist/mcp/index.js > /tmp/mcp-server.log 2>&1 &
|
||||
|
||||
MCP_PID=$!
|
||||
|
||||
# Show log file location
|
||||
echo -e "${YELLOW}📄 MCP server logs: /tmp/mcp-server.log${NC}"
|
||||
|
||||
# Wait for MCP server to be ready
|
||||
echo -e "${YELLOW}⏳ Waiting for MCP server to start...${NC}"
|
||||
for i in {1..10}; do
|
||||
if curl -s http://localhost:${MCP_PORT}/health >/dev/null 2>&1; then
|
||||
echo -e "${GREEN}✅ MCP server is ready!${NC}"
|
||||
break
|
||||
fi
|
||||
if [ $i -eq 10 ]; then
|
||||
echo -e "${RED}❌ MCP server failed to start${NC}"
|
||||
exit 1
|
||||
fi
|
||||
sleep 1
|
||||
done
|
||||
|
||||
# Show status and test endpoints
|
||||
echo -e "\n${GREEN}🎉 Both services are running!${NC}"
|
||||
echo -e "\n📍 Service URLs:"
|
||||
echo -e " • n8n: http://localhost:${N8N_PORT}"
|
||||
echo -e " • MCP server: http://localhost:${MCP_PORT}"
|
||||
echo -e "\n🔑 Auth token: ${AUTH_TOKEN}"
|
||||
echo -e "\n💾 n8n data stored in: ${N8N_DATA_DIR}"
|
||||
echo -e " (Your workflows, credentials, and settings are preserved between runs)"
|
||||
|
||||
# Test MCP protocol endpoint
|
||||
echo -e "\n${YELLOW}🧪 Testing MCP protocol endpoint...${NC}"
|
||||
echo "Response from GET /mcp:"
|
||||
curl -s http://localhost:${MCP_PORT}/mcp | jq '.' || curl -s http://localhost:${MCP_PORT}/mcp
|
||||
|
||||
# Test MCP initialization
|
||||
echo -e "\n${YELLOW}🧪 Testing MCP initialization...${NC}"
|
||||
echo "Response from POST /mcp (initialize):"
|
||||
curl -s -X POST http://localhost:${MCP_PORT}/mcp \
|
||||
-H "Authorization: Bearer ${AUTH_TOKEN}" \
|
||||
-H "Content-Type: application/json" \
|
||||
-d '{"jsonrpc":"2.0","method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{}},"id":1}' \
|
||||
| jq '.' || echo "(Install jq for pretty JSON output)"
|
||||
|
||||
echo -e "\n${GREEN}✅ Setup complete!${NC}"
|
||||
echo -e "\n📝 Next steps:"
|
||||
echo -e " 1. Open n8n at http://localhost:${N8N_PORT}"
|
||||
echo -e " 2. Create a workflow with the AI Agent node"
|
||||
echo -e " 3. Add MCP Client Tool node"
|
||||
echo -e " 4. Configure it with:"
|
||||
echo -e " • Transport: HTTP"
|
||||
echo -e " • URL: http://host.docker.internal:${MCP_PORT}/mcp"
|
||||
echo -e " • Auth: Bearer ${AUTH_TOKEN}"
|
||||
echo -e "\n${YELLOW}Press Ctrl+C to stop both services${NC}"
|
||||
echo -e "\n${YELLOW}📋 To monitor MCP logs: tail -f /tmp/mcp-server.log${NC}"
|
||||
echo -e "${YELLOW}📋 To monitor n8n logs: docker logs -f n8n-test${NC}"
|
||||
|
||||
# Wait for interrupt
|
||||
wait $MCP_PID
|
||||
Reference in New Issue
Block a user