#!/usr/bin/env node
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import {
CallToolRequestSchema,
ErrorCode,
ListToolsRequestSchema,
McpError,
} from '@modelcontextprotocol/sdk/types.js';
// Create server instance
const server = new Server(
{
name: 'test-mcp-server',
version: '0.1.0',
},
{
capabilities: {
tools: {},
},
}
);
// Register tools
server.setRequestHandler(ListToolsRequestSchema, async () => ({
tools: [
{
name: 'hello_world',
description: 'Returns a greeting message',
inputSchema: {
type: 'object',
properties: {
name: {
type: 'string',
description: 'The name to greet',
},
},
required: ['name'],
},
},
],
}));
// Handle tool execution
server.setRequestHandler(CallToolRequestSchema, async (request) => {
try {
if (request.params.name !== 'hello_world') {
throw new McpError(
ErrorCode.MethodNotFound,
`Unknown tool: ${request.params.name}`
);
}
const args = request.params.arguments as { name: string };
if (!args.name) {
throw new McpError(
ErrorCode.InvalidParams,
'Missing required parameter: name'
);
}
return {
content: [
{
type: 'text',
text: `Hello, ${args.name}! This is a test MCP server.`,
},
],
};
} catch (error: unknown) {
console.error('[Error]:', error);
if (error instanceof Error) {
throw new McpError(
ErrorCode.InternalError,
`Failed to execute tool: ${error.message}`
);
}
throw error;
}
});
// Run the server
async function main() {
const transport = new StdioServerTransport();
await server.connect(transport);
console.error('Test MCP server running on stdio');
}
main().catch(console.error);
