decocms · JonasJesus42 · Jan 5, 2026 · Jan 5, 2026 · Jan 5, 2026 · Jan 5, 2026
diff --git a/google-calendar/.env.example b/google-calendar/.env.example
@@ -0,0 +1,12 @@
+# Google Calendar MCP - Environment Variables
+# Copy this file to .env and fill in your credentials
+
+# Google OAuth 2.0 Credentials
+# Get these from Google Cloud Console: https://console.cloud.google.com/
+# 1. Create a project or select existing
+# 2. Enable Google Calendar API
+# 3. Create OAuth 2.0 credentials (Web application type)
+# 4. Add authorized redirect URIs for your deployment
+
+GOOGLE_CLIENT_ID=your_client_id_here
+GOOGLE_CLIENT_SECRET=your_client_secret_here
diff --git a/google-calendar/.gitignore b/google-calendar/.gitignore
@@ -0,0 +1,4 @@
+node_modules
+dist
+.env
+
diff --git a/google-calendar/README.md b/google-calendar/README.md
@@ -0,0 +1,219 @@
+# Google Calendar MCP
+
+MCP Server for Google Calendar integration. Manage calendars, events and check availability using the Google Calendar API.
+
+## Features
+
+### Calendar Management
+- **list_calendars** - List all user's calendars
+- **get_calendar** - Get details of a specific calendar
+- **create_calendar** - Create a new secondary calendar
+- **delete_calendar** - Delete a calendar
+
+### Event Management
+- **list_events** - List events with date filters and search
+- **get_event** - Get details of an event
+- **create_event** - Create event with attendees and reminders
+- **update_event** - Update existing event
+- **delete_event** - Delete event
+- **quick_add_event** - Create event using natural language
+
+### Availability
+- **get_freebusy** - Check busy/free time slots
+
+### Advanced Operations
+- **move_event** - Move an event between calendars
+- **find_available_slots** - Find free time slots across multiple calendars
+- **duplicate_event** - Create a copy of an existing event
+
+## Setup
+
+### 1. Create Project in Google Cloud Console
+
+1. Go to [Google Cloud Console](https://console.cloud.google.com/)
+2. Create a new project or select an existing one
+3. Enable **Google Calendar API**:
+   - Sidebar → APIs & Services → Library
+   - Search for "Google Calendar API" and enable it
+
+### 2. Configure OAuth 2.0
+
+1. Go to "APIs & Services" → "Credentials"
+2. Click "Create credentials" → "OAuth client ID"
+3. Select "Web application"
+4. Configure:
+   - Name: Google Calendar MCP
+   - Authorized JavaScript origins: your URL
+   - Authorized redirect URIs: your callback URL
+
+### 3. Configure Environment Variables
+
+Create a `.env` file with:
+
+```bash
+GOOGLE_CLIENT_ID=your_client_id
+GOOGLE_CLIENT_SECRET=your_client_secret
+```
+
+## Development
+
+```bash
+# Install dependencies (from monorepo root)
+bun install
+
+# Run in development (hot reload)
+bun run dev
+
+# Type check
+bun run check
+
+# Build for production
+bun run build
+```
+
+## Usage Examples
+
+### List events for next week
+
+```json
+{
+  "tool": "list_events",
+  "input": {
+    "timeMin": "2024-01-15T00:00:00Z",
+    "timeMax": "2024-01-22T00:00:00Z",
+    "singleEvents": true,
+    "orderBy": "startTime"
+  }
+}
+```
+
+### Create event with attendees
+
+```json
+{
+  "tool": "create_event",
+  "input": {
+    "summary": "Planning Meeting",
+    "description": "Q1 roadmap discussion",
+    "location": "Conference Room",
+    "start": {
+      "dateTime": "2024-01-15T14:00:00-03:00",
+      "timeZone": "America/Sao_Paulo"
+    },
+    "end": {
+      "dateTime": "2024-01-15T15:00:00-03:00",
+      "timeZone": "America/Sao_Paulo"
+    },
+    "attendees": [
+      { "email": "[email protected]" },
+      { "email": "[email protected]" }
+    ],
+    "sendUpdates": "all"
+  }
+}
+```
+
+### Quick add event with natural language
+
+```json
+{
+  "tool": "quick_add_event",
+  "input": {
+    "text": "Lunch with client tomorrow at 12pm at Central Restaurant"
+  }
+}
+```
+
+### Check availability
+
+```json
+{
+  "tool": "get_freebusy",
+  "input": {
+    "timeMin": "2024-01-15T08:00:00-03:00",
+    "timeMax": "2024-01-15T18:00:00-03:00",
+    "calendarIds": ["primary", "[email protected]"]
+  }
+}
+```
+
+### Find available meeting slots
+
+```json
+{
+  "tool": "find_available_slots",
+  "input": {
+    "calendarIds": ["primary", "[email protected]"],
+    "timeMin": "2024-01-15T09:00:00-03:00",
+    "timeMax": "2024-01-15T18:00:00-03:00",
+    "slotDurationMinutes": 30,
+    "maxSlots": 5
+  }
+}
+```
+
+### Move event to another calendar
+
+```json
+{
+  "tool": "move_event",
+  "input": {
+    "sourceCalendarId": "primary",
+    "eventId": "abc123",
+    "destinationCalendarId": "[email protected]",
+    "sendUpdates": "all"
+  }
+}
+```
+
+### Duplicate an event
+
+```json
+{
+  "tool": "duplicate_event",
+  "input": {
+    "eventId": "abc123",
+    "newStart": {
+      "dateTime": "2024-01-22T14:00:00-03:00",
+      "timeZone": "America/Sao_Paulo"
+    },
+    "newEnd": {
+      "dateTime": "2024-01-22T15:00:00-03:00",
+      "timeZone": "America/Sao_Paulo"
+    }
+  }
+}
+```
+
+## Project Structure
+
+```
+google-calendar/
+├── server/
+│   ├── main.ts              # Entry point with OAuth
+│   ├── constants.ts         # API URLs and constants
+│   ├── lib/
+│   │   ├── google-client.ts # API client
+│   │   └── types.ts         # TypeScript types
+│   └── tools/
+│       ├── index.ts         # Exports all tools
+│       ├── calendars.ts     # Calendar tools
+│       ├── events.ts        # Event tools
+│       ├── freebusy.ts      # Availability tool
+│       └── advanced.ts      # Advanced tools (move, find slots, duplicate)
+├── app.json                 # MCP configuration
+├── package.json
+├── tsconfig.json
+└── README.md
+```
+
+## OAuth Scopes
+
+This MCP requests the following scopes:
+
+- `https://www.googleapis.com/auth/calendar` - Full calendar access
+- `https://www.googleapis.com/auth/calendar.events` - Event management
+
+## License
+
+MIT
diff --git a/google-calendar/app.json b/google-calendar/app.json
@@ -0,0 +1,12 @@
+{
+  "scopeName": "google",
+  "name": "google-calendar",
+  "connection": {
+    "type": "HTTP",
+    "url": "https://sites-google-calendar.decocache.com/mcp"
+  },
+  "description": "Integrate and manage your Google Calendar. Create, edit and delete events, check availability and sync your calendars.",
+  "icon": "https://assets.decocache.com/mcp/b5fffe71-647a-461c-aa39-3da07b86cc96/Google-Meets.svg",
+  "unlisted": false
+}
+
diff --git a/google-calendar/package.json b/google-calendar/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "google-calendar",
+  "version": "1.0.0",
+  "description": "Google Calendar MCP Server - Manage calendars and events",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "bun run --hot server/main.ts",
+    "build:server": "NODE_ENV=production bun build server/main.ts --target=bun --outfile=dist/server/main.js",
+    "build": "bun run build:server",
+    "publish": "cat app.json | deco registry publish -w /shared/deco -y",
+    "check": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@decocms/runtime": "^1.0.3",
+    "zod": "^3.24.3"
+  },
+  "devDependencies": {
+    "@decocms/mcps-shared": "workspace:*",
+    "@modelcontextprotocol/sdk": "1.25.1",
+    "deco-cli": "^0.28.0",
+    "typescript": "^5.7.2"
+  },
+  "engines": {
+    "node": ">=22.0.0"
+  }
+}
+
diff --git a/google-calendar/server/constants.ts b/google-calendar/server/constants.ts
@@ -0,0 +1,55 @@
+/**
+ * Google Calendar API constants and configuration
+ */
+
+export const GOOGLE_CALENDAR_API_BASE =
+  "https://www.googleapis.com/calendar/v3";
+
+// API Endpoints
+export const ENDPOINTS = {
+  CALENDAR_LIST: `${GOOGLE_CALENDAR_API_BASE}/users/me/calendarList`,
+  CALENDARS: `${GOOGLE_CALENDAR_API_BASE}/calendars`,
+  EVENTS: (calendarId: string) =>
+    `${GOOGLE_CALENDAR_API_BASE}/calendars/${encodeURIComponent(calendarId)}/events`,
+  EVENT: (calendarId: string, eventId: string) =>
+    `${GOOGLE_CALENDAR_API_BASE}/calendars/${encodeURIComponent(calendarId)}/events/${encodeURIComponent(eventId)}`,
+  QUICK_ADD: (calendarId: string) =>
+    `${GOOGLE_CALENDAR_API_BASE}/calendars/${encodeURIComponent(calendarId)}/events/quickAdd`,
+  FREEBUSY: `${GOOGLE_CALENDAR_API_BASE}/freeBusy`,
+};
+
+// Default calendar ID
+export const PRIMARY_CALENDAR = "primary";
+
+// Default pagination
+export const DEFAULT_MAX_RESULTS = 50;
+
+// Event colors (Google Calendar color IDs)
+export const EVENT_COLORS = {
+  LAVENDER: "1",
+  SAGE: "2",
+  GRAPE: "3",
+  FLAMINGO: "4",
+  BANANA: "5",
+  TANGERINE: "6",
+  PEACOCK: "7",
+  GRAPHITE: "8",
+  BLUEBERRY: "9",
+  BASIL: "10",
+  TOMATO: "11",
+} as const;
+
+// Event visibility options
+export const EVENT_VISIBILITY = {
+  DEFAULT: "default",
+  PUBLIC: "public",
+  PRIVATE: "private",
+  CONFIDENTIAL: "confidential",
+} as const;
+
+// Event status
+export const EVENT_STATUS = {
+  CONFIRMED: "confirmed",
+  TENTATIVE: "tentative",
+  CANCELLED: "cancelled",
+} as const;
diff --git a/google-calendar/server/lib/env.ts b/google-calendar/server/lib/env.ts
@@ -0,0 +1,17 @@
+import type { Env } from "../../shared/deco.gen.ts";
+
+/**
+ * Get Google OAuth access token from environment context
+ * @param env - The environment containing the mesh request context
+ * @returns The OAuth access token
+ * @throws Error if not authenticated
+ */
+export const getGoogleAccessToken = (env: Env): string => {
+  const authorization = env.MESH_REQUEST_CONTEXT?.authorization;
+  if (!authorization) {
+    throw new Error(
+      "Not authenticated. Please authorize with Google Calendar first.",
+    );
+  }
+  return authorization;
+};