import { Client } from '@modelcontextprotocol/sdk/client/index.js';
import { StdioClientTransport } from '@modelcontextprotocol/sdk/client/stdio.js';
import {
ListToolsResultSchema,
CallToolResultSchema,
} from '@modelcontextprotocol/sdk/types.js';
async function main() {
console.log('Starting MCP Test Client...');
// 1. Setup Transport to spawn the server process
// We run the TS file directly using ts-node or similar, or the built JS
// Adjust the command if you want to run the compiled js instead
const transport = new StdioClientTransport({
command: 'node',
args: [
'--loader',
'ts-node/esm',
'--no-warnings',
'src/index.ts'
],
env: {
...process.env,
// Ensure API KEY is set here or in your environment
CONTEXT_API_KEY: process.env.CONTEXT_API_KEY || 'your-test-api-key',
}
});
const client = new Client(
{
name: 'test-client',
version: '1.0.0',
},
{
capabilities: {},
}
);
try {
// 2. Connect to server
await client.connect(transport);
console.log('Connected to server.');
// 3. List Tools
console.log('\n--- Listing Tools ---');
const tools = await client.request(
{ method: 'tools/list' },
ListToolsResultSchema,
);
console.log('Available tools:', tools.tools.map((t) => t.name).join(', '));
// 4. Test a specific tool (e.g., search_relevant_posts)
console.log('\n--- Testing search_relevant_posts ---');
try {
const result = await client.request(
{
method: 'tools/call',
params: {
name: 'search_relevant_posts',
arguments: {
query: 'What does @elonmusk think about AI?',
username: 'elonmusk',
},
},
},
CallToolResultSchema,
);
// @ts-ignore
if (result.content && result.content[0]) {
// @ts-ignore
console.log('Result:', result.content[0].text);
} else {
console.log('Result structure unexpected:', result);
}
} catch (error: any) {
console.error('Tool execution failed (expected if API key is invalid):', error.message);
}
} catch (error) {
console.error('Client error:', error);
} finally {
await client.close();
}
}
main();
