Hermes Google MCP Server
Lightweight MCP server for Google Workspace (Calendar, Gmail, Drive) designed for Hermes Agent in Docker, enabling tools to list events, messages, and files via CLI.
README
Hermes Google MCP Server
Schlanker MCP-Server für Google Workspace (Calendar · Gmail · Drive) — entwickelt für den Hermes Agent im Docker-Setup.
Warum dieses Projekt?
Die in der Hermes-Dokumentation beschriebenen drei Standard-Wege zur Google-Anbindung scheiterten im Docker-Container-Setup:
| Weg | Problem |
|---|---|
| gws CLI MCP | gws v0.22.5 hat keinen mcp-Subbefehl |
| google_workspace_mcp | asyncio TaskGroup-Fehler beim Gateway-Connect |
| Google Remote MCP | OAuth-Flow im Container nicht möglich (kein Browser) |
Dieser Server löst alle drei Probleme: Reines Python (stdlib-only), HTTP-Transport (umgeht den asyncio-Bug), nutzt die funktionierende gws-CLI-Authentifizierung.
Architektur
Hermes Gateway (Docker) Host (masoud)
───────────────────────── ─────────────────────
config.yaml:
gws-mcp: POST /mcp (JSON-RPC)
url: http://172.17.0.1 ───► http_server.py (Port 8777)
:8777/mcp │
│ subprocess stdin/stdout
▼
server.py (MCP Engine)
│
│ subprocess CLI
▼
gws CLI (OAuth 2.0)
│
▼
Google Workspace APIs
(Calendar v3 · Gmail v1 · Drive v3)
Tools
| Tool | Dienst | Beschreibung |
|---|---|---|
gws_calendar_list_events |
Calendar | Events auflisten (Zeitraum, max. Anzahl) |
gws_gmail_list_messages |
Gmail | E-Mail-IDs auflisten (mit Suchfilter) |
gws_gmail_get_message |
Gmail | E-Mail-Inhalt + Body (includeBody=true) |
gws_drive_list_files |
Drive | Dateien/Ordner auflisten (mit Suchfilter) |
gws_drive_get_file |
Drive | Datei-Metadaten abrufen |
gws_drive_download_file |
Drive | Datei herunterladen → workspace/ |
Voraussetzungen
- gws CLI (
npm install -g @googleworkspace/cli) - OAuth 2.0 Desktop-Client (Google Cloud Console → Credentials)
- Authentifizierung via
gws auth login
Schnellstart
# 1. Abhängigkeiten installieren
npm install -g @googleworkspace/cli
# 2. Authentifizieren (einmalig)
GOOGLE_WORKSPACE_CLI_KEYRING_BACKEND=file gws auth login
# 3. Server starten
git clone https://github.com/MAghadavoodi/HermesGoogleMCP.git
cd HermesGoogleMCP
python3 src/http_server.py &
# 4. Hermes config.yaml
mcp_servers:
gws-mcp:
url: http://172.17.0.1:8777/mcp
enabled: true
platform_toolsets:
cli:
- gws-mcp
matrix:
- gws-mcp
# 5. Reload
hermes mcp reload
Tests
python3 tests/test_calendar.py # 2/2 ✅
python3 tests/test_gmail.py # 2/2 ✅
python3 tests/test_drive.py # 3/3 ✅
Projektstruktur
HermesGoogleMCP/
├── src/
│ ├── server.py # MCP JSON-RPC Engine (6 Tools)
│ └── http_server.py # HTTP-Wrapper (Port 8777)
├── tests/
│ ├── test_calendar.py
│ ├── test_gmail.py
│ └── test_drive.py
├── docs/
│ └── ARCHITECTURE.md # Detaillierte Architektur-Doku
├── Dockerfile # Docker-Image (experimentell)
├── docker-compose.yml # Docker-Compose (experimentell)
├── requirements.txt # stdlib-only, keine pip-Abhängigkeiten
└── .gitignore
Lizenz
MIT — siehe LICENSE
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