@modelcontextprotocol/sdk
Version:
Model Context Protocol implementation for TypeScript
70 lines • 2.86 kB
JavaScript
;
/**
* Example demonstrating client_credentials grant for machine-to-machine authentication.
*
* Supports two authentication methods based on environment variables:
*
* 1. client_secret_basic (default):
* MCP_CLIENT_ID - OAuth client ID (required)
* MCP_CLIENT_SECRET - OAuth client secret (required)
*
* 2. private_key_jwt (when MCP_CLIENT_PRIVATE_KEY_PEM is set):
* MCP_CLIENT_ID - OAuth client ID (required)
* MCP_CLIENT_PRIVATE_KEY_PEM - PEM-encoded private key for JWT signing (required)
* MCP_CLIENT_ALGORITHM - Signing algorithm (default: RS256)
*
* Common:
* MCP_SERVER_URL - Server URL (default: http://localhost:3000/mcp)
*/
Object.defineProperty(exports, "__esModule", { value: true });
const index_js_1 = require("../../client/index.js");
const streamableHttp_js_1 = require("../../client/streamableHttp.js");
const auth_extensions_js_1 = require("../../client/auth-extensions.js");
const DEFAULT_SERVER_URL = process.env.MCP_SERVER_URL || 'http://localhost:3000/mcp';
function createProvider() {
const clientId = process.env.MCP_CLIENT_ID;
if (!clientId) {
console.error('MCP_CLIENT_ID environment variable is required');
process.exit(1);
}
// If private key is provided, use private_key_jwt authentication
const privateKeyPem = process.env.MCP_CLIENT_PRIVATE_KEY_PEM;
if (privateKeyPem) {
const algorithm = process.env.MCP_CLIENT_ALGORITHM || 'RS256';
console.log('Using private_key_jwt authentication');
return new auth_extensions_js_1.PrivateKeyJwtProvider({
clientId,
privateKey: privateKeyPem,
algorithm
});
}
// Otherwise, use client_secret_basic authentication
const clientSecret = process.env.MCP_CLIENT_SECRET;
if (!clientSecret) {
console.error('MCP_CLIENT_SECRET or MCP_CLIENT_PRIVATE_KEY_PEM environment variable is required');
process.exit(1);
}
console.log('Using client_secret_basic authentication');
return new auth_extensions_js_1.ClientCredentialsProvider({
clientId,
clientSecret
});
}
async function main() {
const provider = createProvider();
const client = new index_js_1.Client({ name: 'client-credentials-example', version: '1.0.0' }, { capabilities: {} });
const transport = new streamableHttp_js_1.StreamableHTTPClientTransport(new URL(DEFAULT_SERVER_URL), {
authProvider: provider
});
await client.connect(transport);
console.log('Connected successfully.');
const tools = await client.listTools();
console.log('Available tools:', tools.tools.map(t => t.name).join(', ') || '(none)');
await transport.close();
}
main().catch(err => {
console.error(err);
process.exit(1);
});
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