ephemeralWithDependencies.js•1.36 kB
import path from 'path';
import { Client } from '@modelcontextprotocol/sdk/client/index.js';
import { StdioClientTransport } from '@modelcontextprotocol/sdk/client/stdio.js';
async function main() {
// 1️⃣ Create the MCP client
const client = new Client({
name: 'ephemeral-with-deps-example',
version: '1.0.0',
});
// 2️⃣ Connect to your js-sandbox-mcp server
await client.connect(
new StdioClientTransport({
command: 'npm',
args: ['run', 'dev'],
cwd: path.resolve('..'),
env: { ...process.env },
})
);
console.log('✅ Connected to js-sandbox-mcp');
// 3️⃣ Use the run_js_ephemeral tool with a dependency (lodash)
const result = await client.callTool({
name: 'run_js_ephemeral',
arguments: {
image: 'node:lts-slim',
code: `
import _ from 'lodash';
const names = ['Alice', 'Bob', 'Carol', 'Dave'];
const shuffled = _.shuffle(names);
console.log('Shuffled names:', shuffled.join(', '));
`,
dependencies: [
{
name: 'lodash',
version: '^4.17.21',
},
],
},
});
console.log('▶️ run_js_ephemeral output:\n', result.content[0].text);
process.exit(0);
}
main().catch((err) => {
console.error('❌ Error in ephemeral-with-deps example:', err);
process.exit(1);
});