@modelcontextprotocol/sdk
Version:
Model Context Protocol implementation for TypeScript
48 lines • 1.55 kB
JavaScript
// Run with: npx tsx src/examples/server/toolWithSampleServer.ts
import { McpServer } from '../../server/mcp.js';
import { StdioServerTransport } from '../../server/stdio.js';
import * as z from 'zod/v4';
const mcpServer = new McpServer({
name: 'tools-with-sample-server',
version: '1.0.0'
});
// Tool that uses LLM sampling to summarize any text
mcpServer.registerTool('summarize', {
description: 'Summarize any text using an LLM',
inputSchema: {
text: z.string().describe('Text to summarize')
}
}, async ({ text }) => {
// Call the LLM through MCP sampling
const response = await mcpServer.server.createMessage({
messages: [
{
role: 'user',
content: {
type: 'text',
text: `Please summarize the following text concisely:\n\n${text}`
}
}
],
maxTokens: 500
});
// Since we're not passing tools param to createMessage, response.content is single content
return {
content: [
{
type: 'text',
text: response.content.type === 'text' ? response.content.text : 'Unable to generate summary'
}
]
};
});
async function main() {
const transport = new StdioServerTransport();
await mcpServer.connect(transport);
console.log('MCP server is running...');
}
main().catch(error => {
console.error('Server error:', error);
process.exit(1);
});
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