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#!/usr/bin/env node |
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|
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/** |
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* MCP HTTP Bridge for MetaSync WordPress Plugin |
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* |
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* This bridge allows Claude Desktop to communicate with the MetaSync MCP server |
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* running on WordPress via HTTP/REST API. |
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*/ |
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|
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import { Server } from '@modelcontextprotocol/sdk/server/index.js'; |
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import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'; |
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import { |
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ListToolsRequestSchema, |
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CallToolRequestSchema, |
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} from '@modelcontextprotocol/sdk/types.js'; |
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|
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// Configuration from environment variables |
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const WORDPRESS_URL = process.env.WORDPRESS_URL || 'http://localhost'; |
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const WORDPRESS_API_KEY = process.env.WORDPRESS_API_KEY; |
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|
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if (!WORDPRESS_API_KEY) { |
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console.error('Error: WORDPRESS_API_KEY environment variable is required'); |
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process.exit(1); |
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} |
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|
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// MCP endpoint (single endpoint with JSON-RPC) |
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const MCP_ENDPOINT = `${WORDPRESS_URL}/wp-json/metasync/v1/mcp`; |
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|
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// Request ID counter for JSON-RPC |
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let requestId = 1; |
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|
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/** |
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* Make JSON-RPC request to WordPress MCP endpoint |
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*/ |
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async function callWordPressMCP(method, params = {}) { |
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const payload = { |
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jsonrpc: '2.0', |
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id: requestId++, |
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method: method, |
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params: params |
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}; |
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|
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const options = { |
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method: 'POST', |
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headers: { |
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'Content-Type': 'application/json', |
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'X-API-Key': WORDPRESS_API_KEY, |
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}, |
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body: JSON.stringify(payload) |
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}; |
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|
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try { |
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const response = await fetch(MCP_ENDPOINT, options); |
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|
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if (!response.ok) { |
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const errorText = await response.text(); |
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throw new Error(`HTTP ${response.status}: ${errorText}`); |
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} |
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|
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const jsonRpcResponse = await response.json(); |
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|
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// Handle JSON-RPC error |
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if (jsonRpcResponse.error) { |
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throw new Error(jsonRpcResponse.error.message || 'Unknown JSON-RPC error'); |
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} |
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|
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// Return the result field from JSON-RPC response |
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return jsonRpcResponse.result; |
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} catch (error) { |
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console.error(`[MCP Bridge] WordPress MCP Error: ${error.message}`); |
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throw error; |
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} |
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} |
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|
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/** |
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* Initialize MCP Server |
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*/ |
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async function main() { |
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console.error('[MCP Bridge] Initializing...'); |
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console.error(`[MCP Bridge] WordPress URL: ${WORDPRESS_URL}`); |
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console.error(`[MCP Bridge] API Key: ${WORDPRESS_API_KEY.substring(0, 8)}...`); |
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|
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const server = new Server( |
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{ |
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name: 'wordpress-metasync', |
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version: '1.0.0', |
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}, |
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{ |
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capabilities: { |
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tools: {}, |
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}, |
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} |
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); |
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|
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// Handle tools/list requests |
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server.setRequestHandler(ListToolsRequestSchema, async () => { |
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try { |
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const result = await callWordPressMCP('tools/list'); |
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return result; |
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} catch (error) { |
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console.error('Error listing tools:', error); |
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return { tools: [] }; |
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} |
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}); |
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|
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// Handle tools/call requests |
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server.setRequestHandler(CallToolRequestSchema, async (request) => { |
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try { |
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console.error(`[MCP Bridge] Calling tool: ${request.params.name}`); |
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const result = await callWordPressMCP('tools/call', { |
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name: request.params.name, |
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arguments: request.params.arguments || {} |
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}); |
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return result; |
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} catch (error) { |
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console.error(`[MCP Bridge] Error calling tool:`, error); |
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return { |
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content: [ |
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{ |
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type: 'text', |
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text: `Error: ${error.message}`, |
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}, |
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], |
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isError: true, |
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}; |
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} |
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}); |
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|
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// Connect to stdio transport |
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const transport = new StdioServerTransport(); |
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await server.connect(transport); |
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|
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console.error('[MCP Bridge] ✓ Connected to Claude Desktop'); |
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console.error('[MCP Bridge] ✓ Ready to serve WordPress MCP tools'); |
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} |
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|
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main().catch((error) => { |
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console.error('[MCP Bridge] Fatal error:', error); |
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process.exit(1); |
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}); |
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|
