Medplum MCP Server

import { MedplumClient as MedplumClientSDK } from '@medplum/core'; import fetch from 'node-fetch'; // Required for Node.js environment import { config } from 'dotenv'; config(); // Load environment variables from .env file const { MEDPLUM_BASE_URL, MEDPLUM_CLIENT_ID, MEDPLUM_CLIENT_SECRET } = process.env; if (!MEDPLUM_CLIENT_ID || !MEDPLUM_CLIENT_SECRET) { console.error('Missing Medplum client ID or secret in .env file'); // process.exit(1); // Consider how to handle this in a library context } export const medplum = new MedplumClientSDK({ baseUrl: MEDPLUM_BASE_URL || 'http://localhost:8103/', // Default if not set fetch: fetch as any, // Explicitly pass fetch clientId: MEDPLUM_CLIENT_ID, clientSecret: MEDPLUM_CLIENT_SECRET, // tokenStorage: new FileSystemStorage('medplum.json'), // Optional: for persistent token storage // log: console.log, // Optional: for logging }); // Export the type alias if needed by other modules export type MedplumClient = MedplumClientSDK; /** * Ensures that the Medplum client is authenticated. * If not authenticated, it will attempt to start client credentials login. * @param client The MedplumClient instance to check and authenticate. * Throws an error if authentication fails. */ export async function ensureAuthenticated(): Promise<void> { // The MedplumClient automatically handles token refresh if a client secret is provided. // We just need to ensure the initial login or that a token is present. // console.error('Checking Medplum authentication...'); if (!medplum.getActiveLogin()) { console.error('No active login. Attempting client credentials grant...'); try { await medplum.startClientLogin(MEDPLUM_CLIENT_ID as string, MEDPLUM_CLIENT_SECRET as string); console.error('Client credentials login successful.'); } catch (error) { console.error('Medplum client authentication failed:', error); throw new Error('Medplum client authentication failed.'); } } else { // console.error('Medplum client is already authenticated.'); // You might want to check if the token is close to expiring and refresh proactively // but the SDK should handle this automatically on the next request if needed. } }