Navidrome-MCP

/** * Navidrome MCP Server - Resource Registry * Copyright (C) 2025 * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published * by the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ import type { Server } from '@modelcontextprotocol/sdk/server/index.js'; import type { NavidromeClient } from '../client/navidrome-client.js'; import { ListResourcesRequestSchema, ReadResourceRequestSchema, type Resource, } from '@modelcontextprotocol/sdk/types.js'; import { ErrorFormatter } from '../utils/error-formatter.js'; export function registerResources(server: Server, client: NavidromeClient): void { // Define available resources const resources: Resource[] = [ { uri: 'navidrome://server/status', name: 'Server Status', description: 'Navidrome server connection status', mimeType: 'application/json', }, ]; // Register list resources handler server.setRequestHandler(ListResourcesRequestSchema, async () => ({ resources, })); // Register read resource handler server.setRequestHandler(ReadResourceRequestSchema, async (request) => { const { uri } = request.params; // Parse URI to handle query parameters const baseUri = uri.split('?')[0]; if (baseUri === 'navidrome://server/status') { try { // Test connectivity using our working /song endpoint with minimal request const queryParams = new URLSearchParams({ _start: '0', _end: '1', // Just get 1 song to test connectivity }); await client.request(`/song?${queryParams.toString()}`); return { contents: [ { uri, mimeType: 'application/json', text: JSON.stringify( { status: 'connected', server: 'Navidrome', timestamp: new Date().toISOString(), message: 'Successfully connected to Navidrome server', }, null, 2 ), }, ], }; } catch (error) { return { contents: [ { uri, mimeType: 'application/json', text: JSON.stringify( { status: 'error', server: 'Navidrome', timestamp: new Date().toISOString(), error: 'Failed to connect to Navidrome server', message: error instanceof Error ? error.message : 'Unknown error', }, null, 2 ), }, ], }; } } throw new Error(ErrorFormatter.unknownResource(baseUri !== null && baseUri !== undefined && baseUri !== '' ? baseUri : uri)); }); }