Gmail MCP Server

import {z} from 'zod'; import type {McpServer} from '@modelcontextprotocol/sdk/server/mcp.js'; import type {Config} from './types.js'; import {makeGmailApiCall} from '../utils/gmail-api.js'; import {jsonResult} from '../utils/response.js'; const outputSchema = z.object({ labels: z.array(z.object({ id: z.string(), name: z.string(), type: z.enum(['system', 'user']).optional(), messageListVisibility: z.enum(['show', 'hide']).optional(), labelListVisibility: z.enum(['labelShow', 'labelShowIfUnread', 'labelHide']).optional(), messagesTotal: z.number().optional(), messagesUnread: z.number().optional(), threadsTotal: z.number().optional(), threadsUnread: z.number().optional(), color: z.object({ textColor: z.string().optional(), backgroundColor: z.string().optional(), }).optional(), })), }); export function registerLabelsList(server: McpServer, config: Config): void { server.registerTool( 'labels_list', { title: 'List labels', description: 'List all labels in the user\'s mailbox. Includes both system labels (INBOX, SENT, etc.) and user-created labels.', inputSchema: {}, outputSchema, annotations: { readOnlyHint: true, }, }, async () => { const result = await makeGmailApiCall('GET', '/users/me/labels', config.token); return jsonResult(outputSchema.parse(result)); }, ); }