Obsidian Elite RAG MCP Server

#!/usr/bin/env node const fs = require('fs'); const path = require('path'); const http = require('http'); const os = require('os'); // Configuration const PORT = process.env.PORT || 3000; // Claude Desktop default paths based on OS const getDefaultClaudePath = () => { const homedir = os.homedir(); switch (process.platform) { case 'win32': return path.join(homedir, 'AppData', 'Roaming', 'Claude Desktop'); case 'darwin': // macOS return path.join(homedir, 'Library', 'Application Support', 'Claude Desktop'); case 'linux': return path.join(homedir, '.config', 'Claude Desktop'); default: return null; } }; // Utility to convert Claude Desktop conversation to Markdown const convertToMarkdown = (conversation) => { let markdown = `# ${conversation.title || 'Untitled Conversation'}\n\n`; for (const message of conversation.messages) { const role = message.role === 'user' ? 'Human' : 'Assistant'; markdown += `## ${role}\n\n${message.content}\n\n`; // Handle artifacts if present if (message.artifacts && message.artifacts.length > 0) { for (const artifact of message.artifacts) { markdown += `### Artifact: ${artifact.title || 'Untitled'}\n\n`; markdown += `\`\`\`${artifact.language || ''}\n${artifact.content}\n\`\`\`\n\n`; } } } return markdown; }; // Helper to determine file extension based on language const getExtension = (language) => { const extensionMap = { 'javascript': 'js', 'python': 'py', 'html': 'html', 'css': 'css', 'markdown': 'md', 'json': 'json', 'application/vnd.ant.code': 'txt', 'application/vnd.ant.react': 'jsx', 'text/markdown': 'md', 'text/html': 'html', 'image/svg+xml': 'svg', 'application/vnd.ant.mermaid': 'mermaid', // Add more mappings as needed }; return extensionMap[language?.toLowerCase()] || 'txt'; }; // Get the project ID from a conversation const getProjectId = (conversation) => { return conversation.projectId || 'default-project'; }; // Export a single conversation to the appropriate project structure const exportConversation = (conversationPath, exportBasePath) => { try { const rawData = fs.readFileSync(conversationPath, 'utf8'); const conversation = JSON.parse(rawData); // Get project ID const projectId = getProjectId(conversation); // Create project directory const projectDir = path.join(exportBasePath, projectId); fs.mkdirSync(projectDir, { recursive: true }); // Create conversations directory within project const conversationsDir = path.join(projectDir, 'conversations'); fs.mkdirSync(conversationsDir, { recursive: true }); // Create artifacts directory within project const projectArtifactsDir = path.join(projectDir, 'artifacts'); fs.mkdirSync(projectArtifactsDir, { recursive: true }); // Create project files directory within project const projectFilesDir = path.join(projectDir, 'files'); fs.mkdirSync(projectFilesDir, { recursive: true }); // Create a directory with the conversation title (or ID if no title) const conversationName = conversation.title ? conversation.title.replace(/[/\\?%*:|"<>]/g, '-') : path.basename(conversationPath, '.json'); const conversationDir = path.join(conversationsDir, conversationName); fs.mkdirSync(conversationDir, { recursive: true }); // Export main conversation as markdown const markdown = convertToMarkdown(conversation); fs.writeFileSync(path.join(conversationDir, 'conversation.md'), markdown); // Export artifacts as separate files if (conversation.artifacts && conversation.artifacts.length > 0) { // Create conversation-specific artifacts directory const conversationArtifactsDir = path.join(conversationDir, 'artifacts'); fs.mkdirSync(conversationArtifactsDir, { recursive: true }); conversation.artifacts.forEach((artifact, index) => { const filename = artifact.title ? `${artifact.title.replace(/[/\\?%*:|"<>]/g, '-')}.${getExtension(artifact.language)}` : `artifact-${index}.${getExtension(artifact.language)}`; // Save to conversation-specific artifacts directory fs.writeFileSync(path.join(conversationArtifactsDir, filename), artifact.content); // Also save to project-wide artifacts directory fs.writeFileSync(path.join(projectArtifactsDir, filename), artifact.content); }); } return { success: true, message: `Exported: ${projectId}/${conversationName}`, path: conversationDir, projectId: projectId }; } catch (error) { return { success: false, message: `Error exporting ${conversationPath}: ${error.message}` }; } }; // Export all conversations maintaining project structure const exportAllConversations = (claudePath, exportPath) => { // Find conversations directory const conversationsDir = path.join(claudePath, 'conversations'); if (!fs.existsSync(conversationsDir)) { return { success: false, message: `Conversations directory not found: ${conversationsDir}` }; } // Create export directory fs.mkdirSync(exportPath, { recursive: true }); // Get all conversation files const files = fs.readdirSync(conversationsDir) .filter(file => file.endsWith('.json')); if (files.length === 0) { return { success: false, message: 'No conversation files found' }; } const results = { success: true, total: files.length, exported: 0, failed: 0, exportPath, projects: {}, details: [] }; for (const file of files) { const conversationPath = path.join(conversationsDir, file); const result = exportConversation(conversationPath, exportPath); if (result.success) { results.exported++; // Track by project if (result.projectId) { if (!results.projects[result.projectId]) { results.projects[result.projectId] = { conversations: 0, path: path.join(exportPath, result.projectId) }; } results.projects[result.projectId].conversations++; } } else { results.failed++; } results.details.push({ file, ...result }); } // Also copy over any project files if they exist const projectsDir = path.join(claudePath, 'projects'); if (fs.existsSync(projectsDir)) { try { const projects = fs.readdirSync(projectsDir); for (const project of projects) { const projectDir = path.join(projectsDir, project); if (fs.statSync(projectDir).isDirectory()) { const projectFilesSourceDir = path.join(projectDir, 'files'); if (fs.existsSync(projectFilesSourceDir)) { const projectFilesDestDir = path.join(exportPath, project, 'files'); fs.mkdirSync(projectFilesDestDir, { recursive: true }); // Copy all files from project files directory const files = fs.readdirSync(projectFilesSourceDir); for (const file of files) { const sourcePath = path.join(projectFilesSourceDir, file); const destPath = path.join(projectFilesDestDir, file); fs.copyFileSync(sourcePath, destPath); } if (!results.projects[project]) { results.projects[project] = { conversations: 0, path: path.join(exportPath, project) }; } results.projects[project].files = files.length; } } } } catch (error) { console.warn(`Warning: Error copying project files: ${error.message}`); } } return results; }; // MCP Server implementation const server = http.createServer((req, res) => { // Enable CORS res.setHeader('Access-Control-Allow-Origin', '*'); res.setHeader('Access-Control-Allow-Methods', 'OPTIONS, POST'); res.setHeader('Access-Control-Allow-Headers', 'Content-Type'); // Handle preflight requests if (req.method === 'OPTIONS') { res.writeHead(204); res.end(); return; } // Only handle POST requests to /invoke if (req.method !== 'POST' || !req.url.startsWith('/invoke')) { res.writeHead(404); res.end(JSON.stringify({ error: 'Not found' })); return; } let body = ''; req.on('data', chunk => { body += chunk.toString(); }); req.on('end', () => { try { const data = JSON.parse(body); const { tool, parameters } = data; // Handle different tools if (tool === 'export_chats') { const claudePath = parameters.claudePath || getDefaultClaudePath(); const exportPath = parameters.exportPath || path.join(process.cwd(), 'claude-export'); if (!claudePath) { res.writeHead(400); res.end(JSON.stringify({ error: 'Claude Desktop path not found. Please provide it explicitly.' })); return; } const result = exportAllConversations(claudePath, exportPath); res.writeHead(result.success ? 200 : 400); res.end(JSON.stringify(result)); return; } else if (tool === 'server_info') { // Return server information res.end(JSON.stringify({ name: 'claude-export-mcp', version: '1.0.0', description: 'MCP server for exporting Claude Desktop projects, conversations, and artifacts to Markdown', tools: [ { name: 'export_chats', description: 'Export Claude Desktop projects, conversations, and artifacts to Markdown, maintaining project structure', parameters: { type: 'object', properties: { claudePath: { type: 'string', description: 'Path to Claude Desktop folder (optional, detected automatically if not provided)' }, exportPath: { type: 'string', description: 'Path where to export the Markdown files (optional, defaults to ./claude-export)' } } } }, { name: 'server_info', description: 'Get information about this MCP server', parameters: { type: 'object', properties: {} } } ] })); return; } else { res.writeHead(400); res.end(JSON.stringify({ error: 'Unknown tool' })); return; } } catch (error) { res.writeHead(400); res.end(JSON.stringify({ error: error.message })); } }); }); // Start the server server.listen(PORT, () => { console.log(`Claude Export MCP Server running at http://localhost:${PORT}`); console.log('Available tools:'); console.log(' - export_chats: Export Claude Desktop projects, conversations, and artifacts to Markdown'); console.log(' - server_info: Get information about this MCP server'); console.log('\nExport structure:'); console.log(' /claude-export/'); console.log(' ├── project-1/'); console.log(' │ ├── conversations/'); console.log(' │ │ └── conversation-title/'); console.log(' │ │ ├── conversation.md'); console.log(' │ │ └── artifacts/'); console.log(' │ ├── artifacts/'); console.log(' │ └── files/'); console.log(' └── project-2/'); console.log('\nYou can add this server to Claude by using the Smithery MCP registry.'); console.log(`Server URL: http://localhost:${PORT}`); });