onit-workspace

Google Workspace MCP Server over SSE. Provides 25 tools for Google Drive, Docs, Sheets, Slides, and Gmail.

Vendored from onit.

Installation

pip install onit-workspace

Usage

Start the server (runs in background):

onit-workspace
# or
onit-workspace start

Start in foreground (for debugging):

onit-workspace start --foreground

Custom host/port:

onit-workspace start --host 127.0.0.1 --port 9000

With OAuth 2.0 (recommended):

onit-workspace start --oauth-client-file /path/to/client_secret.json

With service account credentials:

onit-workspace start --credentials-file ~/.config/gcloud/credentials.json

With domain-wide delegation (service account + Gmail):

onit-workspace start --delegated-user user@yourcompany.com

Check status:

onit-workspace status

Stop the server:

onit-workspace stop

Using with onit

onit can connect to onit-workspace as an MCP SSE server. Start onit-workspace first, then launch onit with the --mcp-sse flag:

onit-workspace start
onit --mcp-sse http://localhost:18204/sse --web

This gives onit access to all 25 Google Workspace tools through its web interface.

Example prompts

Once connected, you can ask onit things like:

"List files in my Google Drive"
"Create a new spreadsheet called Q1 Report with columns Date, Revenue, Expenses"
"Read the contents of document <doc_id>"
"Send an email to team@company.com with subject 'Meeting Notes'"
"Download the presentation as PDF"
"Share the document with user@company.com as editor"

MCP Client Configuration

Once running, connect any MCP client to the SSE endpoint:

http://localhost:18204/sse

Example MCP client config:

{
  "mcpServers": {
    "onit-workspace": {
      "url": "http://localhost:18204/sse"
    }
  }
}

Authentication

Two authentication methods are supported. Choose the one that fits your environment.

Option 1: OAuth 2.0 (recommended)

User-based authentication via browser login. Works without domain-wide delegation — ideal when delegation is disabled for security reasons.

1. Go to Google Cloud Console > APIs & Services > Credentials
2. Enable APIs: Docs, Sheets, Slides, Drive, Gmail
3. Create an OAuth 2.0 Client ID (type: Desktop application)
4. Download the client secrets JSON
5. Start the server:

onit-workspace start --oauth-client-file /path/to/client_secret.json

Or set the environment variable:

export GOOGLE_OAUTH_CLIENT_FILE=/path/to/client_secret.json
onit-workspace start

On first API call, a browser opens for Google login. The token is saved to ~/.config/gcloud/token.pickle for subsequent runs.

Option 2: Service account

Server-to-server authentication using a service account key.

1. Create a service account at Google Cloud Console > IAM & Admin > Service Accounts
2. Enable APIs: Docs, Sheets, Slides, Drive, Gmail
3. Download JSON key and configure via one of:
   • CLI flag: --credentials-file /path/to/service-account.json
   • Environment variable: GOOGLE_APPLICATION_CREDENTIALS=/path/to/key.json
   • Default path: ~/.config/gcloud/credentials.json
4. Share existing files with the service account email

Gmail with service account requires domain-wide delegation:

1. Enable delegation on the service account in Google Cloud Console
2. Authorize scopes in Google Admin Console > Security > API Controls > Domain-wide delegation
3. Pass --delegated-user user@yourcompany.com or use the user_email parameter per tool call

See docs/GOOGLE_WORKSPACE_AND_OAUTH.md for the full setup guide.

Tools (25)

Drive (7 tools):

• drive_list - Search and list files with filtering by type, folder, and query
• drive_create_folder - Create folders with optional auto-sharing
• drive_move - Move or rename files and folders
• drive_delete - Trash or permanently delete files
• drive_share - Share with users, groups, domains, or make public
• drive_download - Download/export files (PDF, DOCX, XLSX, PPTX, etc.)
• drive_upload - Upload local files to Drive with optional sharing

Docs (4 tools):

• doc_create - Create a new Google Doc with optional initial content
• doc_read - Read document content as plain text or JSON structure
• doc_write - Append, insert, or replace content (text, headings, bullets, numbered lists, tables)
• doc_update - Modify or delete existing paragraphs by index, change paragraph styles

Sheets (4 tools):

• sheet_create - Create a new spreadsheet with optional headers and data
• sheet_read - Read data from a cell range
• sheet_write - Update or append rows of data
• sheet_info - Get spreadsheet metadata (sheet names, dimensions, frozen rows/columns)

Slides (4 tools):

• slides_create - Create a new presentation with title and subtitle
• slides_read - Read full slide content including shapes, tables, and speaker notes
• slides_edit - Add new slides (multiple layouts) or tables
• slides_update - Modify existing shape text or delete slides

Gmail (6 tools):

• gmail_list - List and search emails with query filters
• gmail_read - Read full email with headers, body, and attachment info
• gmail_modify - Modify labels, read/unread status, and star
• gmail_send - Compose and send email with optional attachments and HTML
• gmail_attachment - List or download email attachments
• gmail_create_label - Create labels or apply labels to messages

Docker

See docs/DOCKER.md for Docker build and run instructions.

Documentation

• Docker — build, run, and Docker Compose setup
• Google Workspace & OAuth Setup — full setup guide
• OAuth Quick Start — 5-minute OAuth setup checklist
• OAuth Redirect Flow — detailed OAuth2 implementation

License

Apache-2.0