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 inputSchema = { labelId: z.string().describe('The ID of the label to update'), name: z.string().optional().describe('New display name for the label'), labelListVisibility: z.enum(['labelShow', 'labelShowIfUnread', 'labelHide']).optional().describe('Visibility in label list'), messageListVisibility: z.enum(['show', 'hide']).optional().describe('Visibility in message list'), backgroundColor: z.string().optional().describe('Background color hex code (e.g., #16a765)'), textColor: z.string().optional().describe('Text color hex code (e.g., #ffffff)'), }; const outputSchema = z.object({ id: z.string(), name: z.string(), type: z.string().optional(), labelListVisibility: z.string().optional(), messageListVisibility: z.string().optional(), color: z.object({ backgroundColor: z.string().optional(), textColor: z.string().optional(), }).optional(), }); export function registerLabelUpdate(server: McpServer, config: Config): void { server.registerTool( 'gmail_label_update', { title: 'Update label', description: 'Update an existing label', inputSchema, outputSchema, }, async ({labelId, name, labelListVisibility, messageListVisibility, backgroundColor, textColor}) => { const result = await makeGmailApiCall('PUT', `/users/me/labels/${labelId}`, config.token, { id: labelId, name, labelListVisibility, messageListVisibility, ...(backgroundColor || textColor ? {color: {backgroundColor, textColor}} : {}), }); return jsonResult(outputSchema.parse(result)); }, ); }