mirror of
https://github.com/czlonkowski/n8n-mcp.git
synced 2026-03-20 17:33:08 +00:00
feat: Complete overhaul to enhanced documentation-only MCP server
- Removed all workflow execution capabilities per user requirements - Implemented enhanced documentation extraction with operations and API mappings - Fixed credential code extraction for all nodes - Fixed package info extraction (name and version) - Enhanced operations parser to handle n8n markdown format - Fixed documentation search to prioritize app nodes over trigger nodes - Comprehensive test coverage for Slack node extraction - All node information now includes: - Complete operations list (42 for Slack) - API method mappings with documentation URLs - Source code and credential definitions - Package metadata - Related resources and templates 🤖 Generated with Claude Code Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
czlonkowski
@@ -4,7 +4,15 @@ import path from 'path';
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import { promises as fs } from 'fs';
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import { logger } from '../utils/logger';
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import { NodeSourceExtractor } from '../utils/node-source-extractor';
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import { DocumentationFetcher } from '../utils/documentation-fetcher';
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import {
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EnhancedDocumentationFetcher,
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EnhancedNodeDocumentation,
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OperationInfo,
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ApiMethodMapping,
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CodeExample,
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TemplateInfo,
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RelatedResource
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} from '../utils/enhanced-documentation-fetcher';
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import { ExampleGenerator } from '../utils/example-generator';
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interface NodeInfo {
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@@ -17,8 +25,15 @@ interface NodeInfo {
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icon?: string;
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sourceCode: string;
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credentialCode?: string;
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documentation?: string;
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documentationMarkdown?: string;
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documentationUrl?: string;
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documentationTitle?: string;
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operations?: OperationInfo[];
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apiMethods?: ApiMethodMapping[];
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documentationExamples?: CodeExample[];
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templates?: TemplateInfo[];
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relatedResources?: RelatedResource[];
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requiredScopes?: string[];
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exampleWorkflow?: any;
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exampleParameters?: any;
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propertiesSchema?: any;
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@@ -44,7 +59,7 @@ interface SearchOptions {
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export class NodeDocumentationService {
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private db: Database.Database;
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private extractor: NodeSourceExtractor;
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private docsFetcher: DocumentationFetcher;
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private docsFetcher: EnhancedDocumentationFetcher;
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constructor(dbPath?: string) {
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const databasePath = dbPath || process.env.NODE_DB_PATH || path.join(process.cwd(), 'data', 'nodes-v2.db');
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@@ -57,7 +72,7 @@ export class NodeDocumentationService {
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this.db = new Database(databasePath);
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this.extractor = new NodeSourceExtractor();
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this.docsFetcher = new DocumentationFetcher();
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this.docsFetcher = new EnhancedDocumentationFetcher();
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// Initialize database with new schema
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this.initializeDatabase();
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@@ -88,6 +103,15 @@ CREATE TABLE IF NOT EXISTS nodes (
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-- Documentation
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documentation_markdown TEXT,
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documentation_url TEXT,
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documentation_title TEXT,
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-- Enhanced documentation fields (stored as JSON)
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operations TEXT,
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api_methods TEXT,
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documentation_examples TEXT,
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templates TEXT,
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related_resources TEXT,
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required_scopes TEXT,
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-- Example usage
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example_workflow TEXT,
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@@ -182,14 +206,16 @@ CREATE TABLE IF NOT EXISTS extraction_stats (
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INSERT OR REPLACE INTO nodes (
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node_type, name, display_name, description, category, subcategory, icon,
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source_code, credential_code, code_hash, code_length,
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documentation_markdown, documentation_url,
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documentation_markdown, documentation_url, documentation_title,
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operations, api_methods, documentation_examples, templates, related_resources, required_scopes,
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example_workflow, example_parameters, properties_schema,
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package_name, version, codex_data, aliases,
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has_credentials, is_trigger, is_webhook
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) VALUES (
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@nodeType, @name, @displayName, @description, @category, @subcategory, @icon,
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@sourceCode, @credentialCode, @hash, @codeLength,
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@documentation, @documentationUrl,
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@documentation, @documentationUrl, @documentationTitle,
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@operations, @apiMethods, @documentationExamples, @templates, @relatedResources, @requiredScopes,
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@exampleWorkflow, @exampleParameters, @propertiesSchema,
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@packageName, @version, @codexData, @aliases,
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@hasCredentials, @isTrigger, @isWebhook
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@@ -208,8 +234,15 @@ CREATE TABLE IF NOT EXISTS extraction_stats (
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credentialCode: nodeInfo.credentialCode || null,
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hash,
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codeLength: nodeInfo.sourceCode.length,
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documentation: nodeInfo.documentation || null,
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documentation: nodeInfo.documentationMarkdown || null,
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documentationUrl: nodeInfo.documentationUrl || null,
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documentationTitle: nodeInfo.documentationTitle || null,
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operations: nodeInfo.operations ? JSON.stringify(nodeInfo.operations) : null,
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apiMethods: nodeInfo.apiMethods ? JSON.stringify(nodeInfo.apiMethods) : null,
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documentationExamples: nodeInfo.documentationExamples ? JSON.stringify(nodeInfo.documentationExamples) : null,
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templates: nodeInfo.templates ? JSON.stringify(nodeInfo.templates) : null,
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relatedResources: nodeInfo.relatedResources ? JSON.stringify(nodeInfo.relatedResources) : null,
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requiredScopes: nodeInfo.requiredScopes ? JSON.stringify(nodeInfo.requiredScopes) : null,
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exampleWorkflow: nodeInfo.exampleWorkflow ? JSON.stringify(nodeInfo.exampleWorkflow) : null,
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exampleParameters: nodeInfo.exampleParameters ? JSON.stringify(nodeInfo.exampleParameters) : null,
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propertiesSchema: nodeInfo.propertiesSchema ? JSON.stringify(nodeInfo.propertiesSchema) : null,
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@@ -346,13 +379,13 @@ CREATE TABLE IF NOT EXISTS extraction_stats (
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// Parse node definition to get metadata
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const nodeDefinition = this.parseNodeDefinition(nodeData.sourceCode);
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// Get documentation
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const docs = await this.docsFetcher.getNodeDocumentation(nodeType);
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// Get enhanced documentation
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const enhancedDocs = await this.docsFetcher.getEnhancedNodeDocumentation(nodeType);
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// Generate example
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const example = ExampleGenerator.generateFromNodeDefinition(nodeDefinition);
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// Prepare node info
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// Prepare node info with enhanced documentation
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const nodeInfo: NodeInfo = {
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nodeType: nodeType,
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name: node.name,
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@@ -363,8 +396,15 @@ CREATE TABLE IF NOT EXISTS extraction_stats (
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icon: nodeDefinition.icon,
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sourceCode: nodeData.sourceCode,
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credentialCode: nodeData.credentialCode,
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documentation: docs?.markdown,
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documentationUrl: docs?.url,
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documentationMarkdown: enhancedDocs?.markdown,
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documentationUrl: enhancedDocs?.url,
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documentationTitle: enhancedDocs?.title,
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operations: enhancedDocs?.operations,
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apiMethods: enhancedDocs?.apiMethods,
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documentationExamples: enhancedDocs?.examples,
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templates: enhancedDocs?.templates,
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relatedResources: enhancedDocs?.relatedResources,
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requiredScopes: enhancedDocs?.requiredScopes,
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exampleWorkflow: example,
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exampleParameters: example.nodes[0]?.parameters,
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propertiesSchema: nodeDefinition.properties,
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@@ -410,28 +450,88 @@ CREATE TABLE IF NOT EXISTS extraction_stats (
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* Parse node definition from source code
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*/
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private parseNodeDefinition(sourceCode: string): any {
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try {
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// Try to extract the description object from the source
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const descMatch = sourceCode.match(/description\s*[:=]\s*({[\s\S]*?})\s*[,;]/);
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if (descMatch) {
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// Clean up the match and try to parse it
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const descStr = descMatch[1]
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.replace(/(['"])?([a-zA-Z0-9_]+)(['"])?\s*:/g, '"$2":') // Quote property names
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.replace(/:\s*'([^']*)'/g, ': "$1"') // Convert single quotes to double
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.replace(/,\s*}/g, '}'); // Remove trailing commas
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return JSON.parse(descStr);
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}
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} catch (error) {
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logger.debug('Failed to parse node definition:', error);
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}
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// Return minimal definition if parsing fails
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return {
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const result: any = {
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displayName: '',
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description: '',
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properties: []
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properties: [],
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category: null,
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subcategory: null,
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icon: null,
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version: null,
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codex: null,
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alias: null
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};
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try {
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// Extract individual properties using specific patterns
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// Display name
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const displayNameMatch = sourceCode.match(/displayName\s*[:=]\s*['"`]([^'"`]+)['"`]/);
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if (displayNameMatch) {
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result.displayName = displayNameMatch[1];
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}
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// Description
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const descriptionMatch = sourceCode.match(/description\s*[:=]\s*['"`]([^'"`]+)['"`]/);
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if (descriptionMatch) {
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result.description = descriptionMatch[1];
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}
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// Icon
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const iconMatch = sourceCode.match(/icon\s*[:=]\s*['"`]([^'"`]+)['"`]/);
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if (iconMatch) {
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result.icon = iconMatch[1];
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}
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// Category/group
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const groupMatch = sourceCode.match(/group\s*[:=]\s*\[['"`]([^'"`]+)['"`]\]/);
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if (groupMatch) {
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result.category = groupMatch[1];
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}
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// Version
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const versionMatch = sourceCode.match(/version\s*[:=]\s*(\d+)/);
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if (versionMatch) {
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result.version = parseInt(versionMatch[1]);
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}
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// Subtitle
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const subtitleMatch = sourceCode.match(/subtitle\s*[:=]\s*['"`]([^'"`]+)['"`]/);
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if (subtitleMatch) {
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result.subtitle = subtitleMatch[1];
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}
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// Try to extract properties array
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const propsMatch = sourceCode.match(/properties\s*[:=]\s*(\[[\s\S]*?\])\s*[,}]/);
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if (propsMatch) {
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try {
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// This is complex to parse from minified code, so we'll skip for now
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result.properties = [];
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} catch (e) {
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// Ignore parsing errors
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}
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}
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// Check if it's a trigger node
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if (sourceCode.includes('implements.*ITrigger') ||
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sourceCode.includes('polling:.*true') ||
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sourceCode.includes('webhook:.*true') ||
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result.displayName.toLowerCase().includes('trigger')) {
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result.isTrigger = true;
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}
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// Check if it's a webhook node
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if (sourceCode.includes('webhooks:') ||
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sourceCode.includes('webhook:.*true') ||
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result.displayName.toLowerCase().includes('webhook')) {
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result.isWebhook = true;
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}
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} catch (error) {
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logger.debug('Error parsing node definition:', error);
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}
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return result;
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}
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/**
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@@ -448,8 +548,15 @@ CREATE TABLE IF NOT EXISTS extraction_stats (
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icon: row.icon,
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sourceCode: row.source_code,
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credentialCode: row.credential_code,
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documentation: row.documentation_markdown,
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documentationMarkdown: row.documentation_markdown,
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documentationUrl: row.documentation_url,
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documentationTitle: row.documentation_title,
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operations: row.operations ? JSON.parse(row.operations) : null,
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apiMethods: row.api_methods ? JSON.parse(row.api_methods) : null,
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documentationExamples: row.documentation_examples ? JSON.parse(row.documentation_examples) : null,
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templates: row.templates ? JSON.parse(row.templates) : null,
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relatedResources: row.related_resources ? JSON.parse(row.related_resources) : null,
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requiredScopes: row.required_scopes ? JSON.parse(row.required_scopes) : null,
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exampleWorkflow: row.example_workflow ? JSON.parse(row.example_workflow) : null,
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exampleParameters: row.example_parameters ? JSON.parse(row.example_parameters) : null,
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propertiesSchema: row.properties_schema ? JSON.parse(row.properties_schema) : null,
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