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skill-google-gmail-tool

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Aktualisiert20. November 2025 um 22:53

Access Google Gmail, Calendar, Tasks, Drive APIs

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SKILL.md

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Jeden Skill mit einem Klick ausführen

name	skill-google-gmail-tool
description	Access Google Gmail, Calendar, Tasks, Drive APIs

When to use

Access Gmail messages, send emails, export to Obsidian
Manage Google Calendar events and export schedules
Work with Google Tasks and to-do lists
Search, upload, download Google Drive files

Google Gmail Tool Skill

Purpose

The google-gmail-tool is a professional CLI that provides comprehensive access to Google services including Gmail, Calendar, Tasks, and Drive. It enables agent-friendly JSON output, human-readable text formats, multi-level verbosity logging, and seamless Obsidian integration.

When to Use This Skill

Use this skill when:

Reading or sending Gmail messages programmatically
Managing calendar events and schedules
Working with Google Tasks and to-do lists
Searching, uploading, or downloading files from Google Drive
Exporting Google data to Obsidian markdown notes
Automating Google service workflows

Do NOT use this skill for:

Direct Google API programming (this is a CLI wrapper)
Google Workspace admin tasks (requires different APIs)
Real-time synchronization (uses polling-based access)

CLI Tool: google-gmail-tool

A CLI that provides access to Google services with OAuth2 authentication, supporting Gmail, Calendar, Tasks, and Drive operations.

Installation

# Clone repository
git clone https://github.com/dnvriend/google-gmail-tool.git
cd google-gmail-tool

# Install globally with uv
uv tool install .

# Verify installation
google-gmail-tool --version

Prerequisites

Python: 3.14 or higher
OAuth Credentials: Google Cloud Console OAuth 2.0 Client ID (Desktop application)
Environment Variables:
- GOOGLE_GMAIL_TOOL_CREDENTIALS: Path to credentials JSON file
- GOOGLE_GMAIL_TOOL_CREDENTIALS_JSON: Full OAuth2 credentials as JSON string
- OBSIDIAN_ROOT: Path to Obsidian vault (for export commands)

Quick Start

# 1. Get OAuth credentials from Google Cloud Console
# Visit: https://console.cloud.google.com/apis/credentials

# 2. Set credentials environment variable
export GOOGLE_GMAIL_TOOL_CREDENTIALS=~/.config/google-gmail-tool/credentials.json

# 3. Verify authentication
google-gmail-tool auth check

# 4. List Gmail threads
google-gmail-tool mail list --today

# 5. List calendar events
google-gmail-tool calendar list --this-week

Progressive Disclosure

📧 Gmail Commands (Click to expand)

mail list - List Gmail messages or threads

List Gmail messages or threads with optional filtering, supporting full Gmail search syntax.

Usage:

google-gmail-tool mail list [OPTIONS]

Options:

--query "TEXT": Gmail search query (supports full Gmail search syntax)
--today: Filter emails from today only
--max-results N / -n N: Maximum results (default: 50, max: 500)
--format FORMAT / -f FORMAT: Output format (json, text)
--text: Shorthand for --format text
--message-mode: List individual messages instead of threads
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Gmail Search Operators:

is:unread, is:read, is:starred - Message status
has:attachment, filename:pdf - Attachments
from:email@example.com - Sender
to:email@example.com - Recipient
subject:keyword - Subject line
after:YYYY/MM/DD, before:YYYY/MM/DD - Date range
older_than:2d, newer_than:1m - Relative dates
label:important, in:inbox - Labels

Examples:

# List 50 most recent threads
google-gmail-tool mail list

# Find unread emails from today
google-gmail-tool mail list --today --query "is:unread"

# Search for specific sender
google-gmail-tool mail list --query "from:team@company.com" -n 10

# Find emails with attachments
google-gmail-tool mail list --query "has:attachment" --text

# Complex query
google-gmail-tool mail list \
    --query "from:john@example.com subject:report after:2025/01/01" \
    --message-mode

Output (JSON):

[
  {
    "id": "19a90f13e3c7af52",
    "threadId": "19a90f13e3c7af52",
    "snippet": "Meeting notes from...",
    "from": "sender@example.com",
    "to": "recipient@example.com",
    "subject": "Meeting Notes",
    "date": "2025-11-20T10:30:00Z"
  }
]

mail send - Send email via Gmail

Send emails via Gmail API with support for HTML, CC, BCC, and attachments.

Usage:

google-gmail-tool mail send [OPTIONS]

Options:

--to EMAIL: Recipient email (required)
--subject TEXT: Email subject (required)
--body TEXT: Email body (required)
--from EMAIL: Sender email (optional, uses default)
--cc EMAIL: CC recipients (comma-separated)
--bcc EMAIL: BCC recipients (comma-separated)
--html: Send as HTML instead of plain text
--dry-run: Preview email without sending
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Send plain text email
google-gmail-tool mail send \
    --to "user@example.com" \
    --subject "Meeting Notes" \
    --body "Here are the notes from today's meeting..."

# Send HTML email with CC
google-gmail-tool mail send \
    --to "user@example.com" \
    --cc "team@example.com" \
    --subject "Weekly Report" \
    --body "<h1>Report</h1><p>Details...</p>" \
    --html

# Preview without sending
google-gmail-tool mail send \
    --to "user@example.com" \
    --subject "Test" \
    --body "Test email" \
    --dry-run

mail get - Get email message details

Retrieve detailed information about a specific Gmail message.

Usage:

google-gmail-tool mail get MESSAGE_ID [OPTIONS]

Options:

MESSAGE_ID: Gmail message ID (required)
--format FORMAT / -f FORMAT: Output format (json, text)
--include-body: Include full message body
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Get message metadata
google-gmail-tool mail get 19a90f13e3c7af52

# Get message with full body
google-gmail-tool mail get 19a90f13e3c7af52 --include-body

# Text format output
google-gmail-tool mail get 19a90f13e3c7af52 --include-body --format text

mail export-obsidian - Export Gmail to Obsidian

Export Gmail threads to Obsidian markdown notes with attachments.

Usage:

google-gmail-tool mail export-obsidian [OPTIONS]

Options:

--query "TEXT": Gmail search query
--today: Export emails from today only
--max-results N / -n N: Maximum threads to export
--obsidian-root PATH: Obsidian vault root path (or use OBSIDIAN_ROOT env var)
--download-attachments: Download email attachments (default)
--no-download-attachments: Skip downloading attachments
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Obsidian Structure:

$OBSIDIAN_ROOT/emails/<timestamp>-<sender>-<subject>/
├── thread.md                 # Thread with all messages
└── attachments/              # Downloaded attachments
    ├── document.pdf
    └── image.png

Examples:

# Export today's emails
google-gmail-tool mail export-obsidian --today

# Export specific threads
google-gmail-tool mail export-obsidian --query "from:important@example.com"

# Export without attachments
google-gmail-tool mail export-obsidian \
    --query "subject:report" \
    --no-download-attachments

📅 Calendar Commands (Click to expand)

calendar list - List calendar events

List calendar events with time range and query filtering.

Usage:

google-gmail-tool calendar list [OPTIONS]

Options:

--today: Events for today
--tomorrow: Events for tomorrow
--this-week: Events this week (Monday-Sunday, default)
--next-week: Events next week
--days N: Events for next N days
--date YYYY-MM-DD: Events for specific date
--range-start YYYY-MM-DD: Start of custom range
--range-end YYYY-MM-DD: End of custom range
--query "TEXT": Free-text search (title, description, location)
--max-results N / -n N: Maximum results (default: 100)
--format FORMAT / -f FORMAT: Output format (json, text)
--text: Shorthand for --format text
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# List this week's events (default)
google-gmail-tool calendar list

# Today's events
google-gmail-tool calendar list --today

# Next 7 days
google-gmail-tool calendar list --days 7

# Search for meetings
google-gmail-tool calendar list --query "team meeting"

# Custom date range
google-gmail-tool calendar list \
    --range-start 2025-11-20 \
    --range-end 2025-11-27

Output (JSON):

[
  {
    "id": "event123",
    "summary": "Team Meeting",
    "start": "2025-11-20T10:00:00Z",
    "end": "2025-11-20T11:00:00Z",
    "location": "Conference Room A",
    "attendees": ["user1@example.com", "user2@example.com"]
  }
]

calendar create - Create calendar event

Create a new calendar event with optional attendees and Google Meet.

Usage:

google-gmail-tool calendar create [OPTIONS]

Options:

--title TEXT / -t TEXT: Event title (required)
--start DATETIME: Start datetime (YYYY-MM-DD HH:MM)
--end DATETIME: End datetime (YYYY-MM-DD HH:MM)
--date YYYY-MM-DD: Date for all-day event
--all-day: Create all-day event (requires --date)
--location TEXT / -l TEXT: Event location
--description TEXT / -d TEXT: Event description
--attendees EMAILS / -a EMAILS: Comma-separated attendee emails
--add-meet: Add Google Meet video conferencing
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Create simple event
google-gmail-tool calendar create \
    --title "Team Meeting" \
    --start "2025-11-20 10:00" \
    --end "2025-11-20 11:00"

# Create event with Google Meet
google-gmail-tool calendar create \
    --title "Remote Standup" \
    --start "2025-11-21 09:00" \
    --end "2025-11-21 09:30" \
    --add-meet

# Create all-day event
google-gmail-tool calendar create \
    --title "Conference" \
    --date "2025-11-25" \
    --all-day

# Create event with attendees
google-gmail-tool calendar create \
    --title "Project Review" \
    --start "2025-11-22 14:00" \
    --end "2025-11-22 15:00" \
    --location "Room 301" \
    --attendees "user1@example.com,user2@example.com"

calendar export-obsidian - Export calendar to Obsidian

Export calendar events to Obsidian daily notes as checklist items.

Usage:

google-gmail-tool calendar export-obsidian [OPTIONS]

Options:

--today: Export today's events
--this-week: Export this week's events (default)
--date YYYY-MM-DD: Export specific date
--range-start YYYY-MM-DD: Start of custom range
--range-end YYYY-MM-DD: End of custom range
--query "TEXT": Filter events by search query
--obsidian-root PATH: Obsidian vault root path
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Smart Merge Logic:

Preserves checked-off items
Updates event times if changed
Removes cancelled events
Adds new events

Examples:

# Export today's schedule
google-gmail-tool calendar export-obsidian --today

# Export this week to daily notes
google-gmail-tool calendar export-obsidian --this-week

# Export filtered events
google-gmail-tool calendar export-obsidian --query "meeting"

✅ Task Commands (Click to expand)

task list - List Google Tasks

List Google Tasks with status and date filtering.

Usage:

google-gmail-tool task list [OPTIONS]

Options:

--completed: Show only completed tasks
--incomplete: Show only incomplete tasks (default)
--show-all: Show both completed and incomplete
--today: Tasks due today
--overdue: Tasks past due date
--max-results N / -n N: Maximum results (default: 100)
--format FORMAT / -f FORMAT: Output format (json, text)
--text: Shorthand for --format text
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# List incomplete tasks (default)
google-gmail-tool task list

# Show all tasks including completed
google-gmail-tool task list --show-all

# Tasks due today
google-gmail-tool task list --today

# Overdue tasks
google-gmail-tool task list --overdue

# First 10 incomplete tasks
google-gmail-tool task list --incomplete -n 10

Output (JSON):

[
  {
    "id": "task123",
    "title": "Review PR #456",
    "notes": "Check code quality and tests",
    "due": "2025-11-20",
    "status": "needsAction",
    "updated": "2025-11-19T15:30:00Z"
  }
]

task create - Create new task

Create a new Google Task with optional notes and due date.

Usage:

google-gmail-tool task create [OPTIONS]

Options:

--title TEXT / -t TEXT: Task title (required)
--notes TEXT / -n TEXT: Task notes/description
--due YYYY-MM-DD / -d YYYY-MM-DD: Due date
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Create minimal task
google-gmail-tool task create --title "Review PR #123"

# Create task with due date
google-gmail-tool task create \
    --title "Submit report" \
    --due "2025-11-25"

# Create task with notes
google-gmail-tool task create \
    --title "Team meeting prep" \
    --notes "Prepare slides and agenda" \
    --due "2025-11-20"

task complete - Mark tasks as completed

Mark one or more tasks as completed.

Usage:

google-gmail-tool task complete TASK_ID [TASK_ID...] [OPTIONS]

Options:

TASK_ID: One or more task IDs (space-separated)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Complete single task
google-gmail-tool task complete abc123xyz

# Complete multiple tasks
google-gmail-tool task complete abc123 def456 ghi789

# Pipeline with jq
TASK_ID=$(google-gmail-tool task list -n 1 | jq -r '.[0].id')
google-gmail-tool task complete "$TASK_ID"

task export-obsidian - Export tasks to Obsidian

Export Google Tasks to Obsidian daily notes as checklist items.

Usage:

google-gmail-tool task export-obsidian [OPTIONS]

Options:

--today: Export tasks due today
--this-week: Export tasks due this week
--date YYYY-MM-DD: Export tasks for specific date
--range-start YYYY-MM-DD: Start of custom range
--range-end YYYY-MM-DD: End of custom range
--obsidian-root PATH: Obsidian vault root path
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Smart Merge Logic:

Preserves checked-off items
Updates task details if changed
Removes completed tasks (optional)
Adds new tasks

Examples:

# Export today's tasks
google-gmail-tool task export-obsidian --today

# Export this week's tasks
google-gmail-tool task export-obsidian --this-week

# Export custom date range
google-gmail-tool task export-obsidian \
    --range-start 2025-11-20 \
    --range-end 2025-11-27

📁 Drive Commands (Click to expand)

drive list - List Drive files

List files in Google Drive with filtering and sorting.

Usage:

google-gmail-tool drive list [OPTIONS]

Options:

--query "TEXT": Drive query string
--max-results N / -n N: Maximum results (default: 50)
--folder FOLDER_ID: List files in specific folder
--order-by FIELD: Sort by field (name, createdTime, modifiedTime desc)
--format FORMAT / -f FORMAT: Output format (json, text)
--text: Shorthand for --format text
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# List 50 most recent files
google-gmail-tool drive list

# List files in folder
google-gmail-tool drive list --folder 0ALlMmd1yT2TNUk9PVA

# Sort by name
google-gmail-tool drive list --order-by name -n 20

Output (JSON):

[
  {
    "id": "1abc...xyz",
    "name": "document.pdf",
    "mimeType": "application/pdf",
    "size": "1048576",
    "modifiedTime": "2025-11-20T10:30:00Z",
    "webViewLink": "https://drive.google.com/..."
  }
]

drive search - Search Drive files

Search for files and folders with common filters.

Usage:

google-gmail-tool drive search [OPTIONS]

Options:

--name "TEXT": Search by file/folder name
--type TYPE: Filter by type (document, spreadsheet, presentation, folder, pdf, image)
--owner OWNER: Filter by owner (me, others, anyone)
--shared: Show only shared files
--max-results N / -n N: Maximum results (default: 50)
--format FORMAT / -f FORMAT: Output format (json, text)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Search by name
google-gmail-tool drive search --name "report"

# Find PDFs I own
google-gmail-tool drive search --type pdf --owner me

# Find shared spreadsheets
google-gmail-tool drive search --type spreadsheet --shared

# Complex search
google-gmail-tool drive search \
    --name "2025" \
    --type document \
    --owner me \
    -n 100

drive upload-file - Upload file to Drive

Upload a local file to Google Drive.

Usage:

google-gmail-tool drive upload-file LOCAL_PATH [PARENT_ID] [OPTIONS]

Options:

LOCAL_PATH: Local file path (required)
PARENT_ID: Parent folder ID (optional, defaults to My Drive root)
--name NAME: Drive file name (defaults to local filename)
--description TEXT: File description
--mime-type TYPE: Override MIME type
--force / -f: Skip duplicate check
--format FORMAT: Output format (json, text)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Upload to My Drive root
google-gmail-tool drive upload-file document.pdf

# Upload to specific folder
google-gmail-tool drive upload-file report.pdf 0ALlMmd1yT2TNUk9PVA

# Upload with custom name
google-gmail-tool drive upload-file data.csv \
    --name "Sales Report 2025.csv"

drive download - Download file from Drive

Download a file from Google Drive to local filesystem.

Usage:

google-gmail-tool drive download FILE_ID OUTPUT_PATH [OPTIONS]

Options:

FILE_ID: Drive file ID (required)
OUTPUT_PATH: Local output path (required)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Download file
google-gmail-tool drive download 1abc...xyz document.pdf

# Download to specific directory
google-gmail-tool drive download 1abc...xyz ~/Downloads/report.pdf

🔐 Authentication Commands (Click to expand)

auth check - Verify credentials

Verify Google OAuth credentials and API access.

Usage:

google-gmail-tool auth check [-v|-vv|-vvv]

Environment Variables:

GOOGLE_GMAIL_TOOL_CREDENTIALS_JSON: Full OAuth2 credentials as JSON string
GOOGLE_GMAIL_TOOL_CREDENTIALS: Path to OAuth2 credentials JSON file

Validates:

OAuth credential format and validity
Access token refresh capability
Gmail API access
Calendar API access
Tasks API access
Drive API access

Examples:

# Check authentication
google-gmail-tool auth check

# Check with debug output
google-gmail-tool auth check -vv

Output:

🔐 Checking Google OAuth credentials...
✓ Credentials loaded successfully
✓ Gmail API access granted
✓ Calendar API access granted
✓ Tasks API access granted
✓ Drive API access granted

auth login - Complete OAuth flow

Complete OAuth flow to generate authorized credentials.

Usage:

google-gmail-tool auth login [OPTIONS]

Options:

--client-id ID: OAuth Client ID
--client-secret SECRET: OAuth Client Secret
--json-file PATH: Path to client secret JSON (alternative)
--output PATH / -o PATH: Output file for credentials (default: ~/.config/google-gmail-tool/credentials.json)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Login with client ID and secret
google-gmail-tool auth login \
    --client-id "123...apps.googleusercontent.com" \
    --client-secret "GOCSPX-..."

# Login with JSON file
google-gmail-tool auth login \
    --json-file ~/Downloads/client_secret.json

# Custom output location
google-gmail-tool auth login \
    --json-file ~/Downloads/client_secret.json \
    --output ~/.credentials/google.json

⚙️ Advanced Features (Click to expand)

Multi-Level Verbosity

Control logging detail with -v/-vv/-vvv flags:

No flag (WARNING): Only critical issues
-v (INFO): High-level operations, important events
-vv (DEBUG): Detailed operations, API calls, validation steps
-vvv (TRACE): Full request/response, library internals

Examples:

# Normal mode (warnings only)
google-gmail-tool mail list

# Info level
google-gmail-tool mail list -v

# Debug level
google-gmail-tool mail list -vv

# Trace level (includes Google API internals)
google-gmail-tool mail list -vvv

Shell Completion

Install tab completion for bash, zsh, or fish:

Bash:

eval "$(google-gmail-tool completion bash)"
# Or add to ~/.bashrc

Zsh:

eval "$(google-gmail-tool completion zsh)"
# Or add to ~/.zshrc

Fish:

google-gmail-tool completion fish > ~/.config/fish/completions/google-gmail-tool.fish

Output Formats

All commands support JSON and text output:

JSON (default):

google-gmail-tool mail list | jq '.[] | .subject'

Text (human-readable):

google-gmail-tool mail list --text

Pipeline Integration

Designed for Unix pipeline integration:

Examples:

# Extract email subjects
google-gmail-tool mail list | jq -r '.[] | .subject'

# Count unread messages
google-gmail-tool mail list --query "is:unread" | jq 'length'

# Complete first incomplete task
TASK_ID=$(google-gmail-tool task list -n 1 | jq -r '.[0].id')
google-gmail-tool task complete "$TASK_ID"

# Search and download Drive file
FILE_ID=$(google-gmail-tool drive search --name "report" | jq -r '.[0].id')
google-gmail-tool drive download "$FILE_ID" report.pdf

🔧 Troubleshooting (Click to expand)

Common Issues

Issue: "Credentials not found"

# Error
[ERROR] Credentials not found

Solution:

Set credentials environment variable:

export GOOGLE_GMAIL_TOOL_CREDENTIALS=~/.config/google-gmail-tool/credentials.json

Or use auth login to generate credentials:

google-gmail-tool auth login --json-file ~/Downloads/client_secret.json

Issue: "API access denied"

Solution:

Check API is enabled in Google Cloud Console
Verify OAuth scopes include required permissions
Re-run auth check:
```
google-gmail-tool auth check -vv
```

Issue: "Token expired"

Solution: Credentials include refresh token, should auto-refresh. If not:

# Re-authenticate
google-gmail-tool auth login --json-file ~/Downloads/client_secret.json

Issue: "Obsidian export fails"

Solution:

Set OBSIDIAN_ROOT environment variable:

export OBSIDIAN_ROOT=~/Documents/ObsidianVault

Or use --obsidian-root flag:

google-gmail-tool mail export-obsidian --obsidian-root ~/Documents/ObsidianVault

Getting Help

# Main help
google-gmail-tool --help

# Command group help
google-gmail-tool mail --help
google-gmail-tool calendar --help

# Specific command help
google-gmail-tool mail list --help
google-gmail-tool task create --help

Exit Codes

0: Success
1: General error (authentication, API error, validation failure)
2: Not found (message/event/task/file not found)

Output Formats

JSON (default):

Agent-friendly structured data
Suitable for parsing with jq
Consistent schema across commands

Text (--text flag):

Human-readable format
Tabular or list output
Good for terminal viewing

Best Practices

Use Environment Variables: Set GOOGLE_GMAIL_TOOL_CREDENTIALS and OBSIDIAN_ROOT for convenience
Enable Verbosity for Debugging: Use -vv or -vvv when troubleshooting
JSON Output for Scripts: Default JSON output is ideal for automation
Obsidian Integration: Use export commands to maintain synchronized notes
Pipeline with jq: Combine with jq for powerful data processing
Shell Completion: Install completion for better CLI experience

Resources

GitHub: https://github.com/dnvriend/google-gmail-tool
Google Cloud Console: https://console.cloud.google.com/apis/credentials
Gmail Search Syntax: https://support.google.com/mail/answer/7190
Obsidian: https://obsidian.md

name	skill-google-gmail-tool
description	Access Google Gmail, Calendar, Tasks, Drive APIs

When to use

Access Gmail messages, send emails, export to Obsidian
Manage Google Calendar events and export schedules
Work with Google Tasks and to-do lists
Search, upload, download Google Drive files

Google Gmail Tool Skill

Purpose

When to Use This Skill

Use this skill when:

Reading or sending Gmail messages programmatically
Managing calendar events and schedules
Working with Google Tasks and to-do lists
Searching, uploading, or downloading files from Google Drive
Exporting Google data to Obsidian markdown notes
Automating Google service workflows

Do NOT use this skill for:

Direct Google API programming (this is a CLI wrapper)
Google Workspace admin tasks (requires different APIs)
Real-time synchronization (uses polling-based access)

CLI Tool: google-gmail-tool

A CLI that provides access to Google services with OAuth2 authentication, supporting Gmail, Calendar, Tasks, and Drive operations.

Installation

# Clone repository
git clone https://github.com/dnvriend/google-gmail-tool.git
cd google-gmail-tool

# Install globally with uv
uv tool install .

# Verify installation
google-gmail-tool --version

Prerequisites

Python: 3.14 or higher
OAuth Credentials: Google Cloud Console OAuth 2.0 Client ID (Desktop application)
Environment Variables:
- GOOGLE_GMAIL_TOOL_CREDENTIALS: Path to credentials JSON file
- GOOGLE_GMAIL_TOOL_CREDENTIALS_JSON: Full OAuth2 credentials as JSON string
- OBSIDIAN_ROOT: Path to Obsidian vault (for export commands)

Quick Start

# 1. Get OAuth credentials from Google Cloud Console
# Visit: https://console.cloud.google.com/apis/credentials

# 2. Set credentials environment variable
export GOOGLE_GMAIL_TOOL_CREDENTIALS=~/.config/google-gmail-tool/credentials.json

# 3. Verify authentication
google-gmail-tool auth check

# 4. List Gmail threads
google-gmail-tool mail list --today

# 5. List calendar events
google-gmail-tool calendar list --this-week

Progressive Disclosure

📧 Gmail Commands (Click to expand)

mail list - List Gmail messages or threads

List Gmail messages or threads with optional filtering, supporting full Gmail search syntax.

Usage:

google-gmail-tool mail list [OPTIONS]

Options:

--query "TEXT": Gmail search query (supports full Gmail search syntax)
--today: Filter emails from today only
--max-results N / -n N: Maximum results (default: 50, max: 500)
--format FORMAT / -f FORMAT: Output format (json, text)
--text: Shorthand for --format text
--message-mode: List individual messages instead of threads
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Gmail Search Operators:

is:unread, is:read, is:starred - Message status
has:attachment, filename:pdf - Attachments
from:email@example.com - Sender
to:email@example.com - Recipient
subject:keyword - Subject line
after:YYYY/MM/DD, before:YYYY/MM/DD - Date range
older_than:2d, newer_than:1m - Relative dates
label:important, in:inbox - Labels

Examples:

# List 50 most recent threads
google-gmail-tool mail list

# Find unread emails from today
google-gmail-tool mail list --today --query "is:unread"

# Search for specific sender
google-gmail-tool mail list --query "from:team@company.com" -n 10

# Find emails with attachments
google-gmail-tool mail list --query "has:attachment" --text

# Complex query
google-gmail-tool mail list \
    --query "from:john@example.com subject:report after:2025/01/01" \
    --message-mode

Output (JSON):

[
  {
    "id": "19a90f13e3c7af52",
    "threadId": "19a90f13e3c7af52",
    "snippet": "Meeting notes from...",
    "from": "sender@example.com",
    "to": "recipient@example.com",
    "subject": "Meeting Notes",
    "date": "2025-11-20T10:30:00Z"
  }
]

mail send - Send email via Gmail

Send emails via Gmail API with support for HTML, CC, BCC, and attachments.

Usage:

google-gmail-tool mail send [OPTIONS]

Options:

--to EMAIL: Recipient email (required)
--subject TEXT: Email subject (required)
--body TEXT: Email body (required)
--from EMAIL: Sender email (optional, uses default)
--cc EMAIL: CC recipients (comma-separated)
--bcc EMAIL: BCC recipients (comma-separated)
--html: Send as HTML instead of plain text
--dry-run: Preview email without sending
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Send plain text email
google-gmail-tool mail send \
    --to "user@example.com" \
    --subject "Meeting Notes" \
    --body "Here are the notes from today's meeting..."

# Send HTML email with CC
google-gmail-tool mail send \
    --to "user@example.com" \
    --cc "team@example.com" \
    --subject "Weekly Report" \
    --body "<h1>Report</h1><p>Details...</p>" \
    --html

# Preview without sending
google-gmail-tool mail send \
    --to "user@example.com" \
    --subject "Test" \
    --body "Test email" \
    --dry-run

mail get - Get email message details

Retrieve detailed information about a specific Gmail message.

Usage:

google-gmail-tool mail get MESSAGE_ID [OPTIONS]

Options:

MESSAGE_ID: Gmail message ID (required)
--format FORMAT / -f FORMAT: Output format (json, text)
--include-body: Include full message body
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Get message metadata
google-gmail-tool mail get 19a90f13e3c7af52

# Get message with full body
google-gmail-tool mail get 19a90f13e3c7af52 --include-body

# Text format output
google-gmail-tool mail get 19a90f13e3c7af52 --include-body --format text

mail export-obsidian - Export Gmail to Obsidian

Export Gmail threads to Obsidian markdown notes with attachments.

Usage:

google-gmail-tool mail export-obsidian [OPTIONS]

Options:

--query "TEXT": Gmail search query
--today: Export emails from today only
--max-results N / -n N: Maximum threads to export
--obsidian-root PATH: Obsidian vault root path (or use OBSIDIAN_ROOT env var)
--download-attachments: Download email attachments (default)
--no-download-attachments: Skip downloading attachments
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Obsidian Structure:

$OBSIDIAN_ROOT/emails/<timestamp>-<sender>-<subject>/
├── thread.md                 # Thread with all messages
└── attachments/              # Downloaded attachments
    ├── document.pdf
    └── image.png

Examples:

# Export today's emails
google-gmail-tool mail export-obsidian --today

# Export specific threads
google-gmail-tool mail export-obsidian --query "from:important@example.com"

# Export without attachments
google-gmail-tool mail export-obsidian \
    --query "subject:report" \
    --no-download-attachments

📅 Calendar Commands (Click to expand)

calendar list - List calendar events

List calendar events with time range and query filtering.

Usage:

google-gmail-tool calendar list [OPTIONS]

Options:

--today: Events for today
--tomorrow: Events for tomorrow
--this-week: Events this week (Monday-Sunday, default)
--next-week: Events next week
--days N: Events for next N days
--date YYYY-MM-DD: Events for specific date
--range-start YYYY-MM-DD: Start of custom range
--range-end YYYY-MM-DD: End of custom range
--query "TEXT": Free-text search (title, description, location)
--max-results N / -n N: Maximum results (default: 100)
--format FORMAT / -f FORMAT: Output format (json, text)
--text: Shorthand for --format text
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# List this week's events (default)
google-gmail-tool calendar list

# Today's events
google-gmail-tool calendar list --today

# Next 7 days
google-gmail-tool calendar list --days 7

# Search for meetings
google-gmail-tool calendar list --query "team meeting"

# Custom date range
google-gmail-tool calendar list \
    --range-start 2025-11-20 \
    --range-end 2025-11-27

Output (JSON):

[
  {
    "id": "event123",
    "summary": "Team Meeting",
    "start": "2025-11-20T10:00:00Z",
    "end": "2025-11-20T11:00:00Z",
    "location": "Conference Room A",
    "attendees": ["user1@example.com", "user2@example.com"]
  }
]

calendar create - Create calendar event

Create a new calendar event with optional attendees and Google Meet.

Usage:

google-gmail-tool calendar create [OPTIONS]

Options:

--title TEXT / -t TEXT: Event title (required)
--start DATETIME: Start datetime (YYYY-MM-DD HH:MM)
--end DATETIME: End datetime (YYYY-MM-DD HH:MM)
--date YYYY-MM-DD: Date for all-day event
--all-day: Create all-day event (requires --date)
--location TEXT / -l TEXT: Event location
--description TEXT / -d TEXT: Event description
--attendees EMAILS / -a EMAILS: Comma-separated attendee emails
--add-meet: Add Google Meet video conferencing
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Create simple event
google-gmail-tool calendar create \
    --title "Team Meeting" \
    --start "2025-11-20 10:00" \
    --end "2025-11-20 11:00"

# Create event with Google Meet
google-gmail-tool calendar create \
    --title "Remote Standup" \
    --start "2025-11-21 09:00" \
    --end "2025-11-21 09:30" \
    --add-meet

# Create all-day event
google-gmail-tool calendar create \
    --title "Conference" \
    --date "2025-11-25" \
    --all-day

# Create event with attendees
google-gmail-tool calendar create \
    --title "Project Review" \
    --start "2025-11-22 14:00" \
    --end "2025-11-22 15:00" \
    --location "Room 301" \
    --attendees "user1@example.com,user2@example.com"

calendar export-obsidian - Export calendar to Obsidian

Export calendar events to Obsidian daily notes as checklist items.

Usage:

google-gmail-tool calendar export-obsidian [OPTIONS]

Options:

--today: Export today's events
--this-week: Export this week's events (default)
--date YYYY-MM-DD: Export specific date
--range-start YYYY-MM-DD: Start of custom range
--range-end YYYY-MM-DD: End of custom range
--query "TEXT": Filter events by search query
--obsidian-root PATH: Obsidian vault root path
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Smart Merge Logic:

Preserves checked-off items
Updates event times if changed
Removes cancelled events
Adds new events

Examples:

# Export today's schedule
google-gmail-tool calendar export-obsidian --today

# Export this week to daily notes
google-gmail-tool calendar export-obsidian --this-week

# Export filtered events
google-gmail-tool calendar export-obsidian --query "meeting"

✅ Task Commands (Click to expand)

task list - List Google Tasks

List Google Tasks with status and date filtering.

Usage:

google-gmail-tool task list [OPTIONS]

Options:

--completed: Show only completed tasks
--incomplete: Show only incomplete tasks (default)
--show-all: Show both completed and incomplete
--today: Tasks due today
--overdue: Tasks past due date
--max-results N / -n N: Maximum results (default: 100)
--format FORMAT / -f FORMAT: Output format (json, text)
--text: Shorthand for --format text
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# List incomplete tasks (default)
google-gmail-tool task list

# Show all tasks including completed
google-gmail-tool task list --show-all

# Tasks due today
google-gmail-tool task list --today

# Overdue tasks
google-gmail-tool task list --overdue

# First 10 incomplete tasks
google-gmail-tool task list --incomplete -n 10

Output (JSON):

[
  {
    "id": "task123",
    "title": "Review PR #456",
    "notes": "Check code quality and tests",
    "due": "2025-11-20",
    "status": "needsAction",
    "updated": "2025-11-19T15:30:00Z"
  }
]

task create - Create new task

Create a new Google Task with optional notes and due date.

Usage:

google-gmail-tool task create [OPTIONS]

Options:

--title TEXT / -t TEXT: Task title (required)
--notes TEXT / -n TEXT: Task notes/description
--due YYYY-MM-DD / -d YYYY-MM-DD: Due date
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Create minimal task
google-gmail-tool task create --title "Review PR #123"

# Create task with due date
google-gmail-tool task create \
    --title "Submit report" \
    --due "2025-11-25"

# Create task with notes
google-gmail-tool task create \
    --title "Team meeting prep" \
    --notes "Prepare slides and agenda" \
    --due "2025-11-20"

task complete - Mark tasks as completed

Mark one or more tasks as completed.

Usage:

google-gmail-tool task complete TASK_ID [TASK_ID...] [OPTIONS]

Options:

TASK_ID: One or more task IDs (space-separated)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Complete single task
google-gmail-tool task complete abc123xyz

# Complete multiple tasks
google-gmail-tool task complete abc123 def456 ghi789

# Pipeline with jq
TASK_ID=$(google-gmail-tool task list -n 1 | jq -r '.[0].id')
google-gmail-tool task complete "$TASK_ID"

task export-obsidian - Export tasks to Obsidian

Export Google Tasks to Obsidian daily notes as checklist items.

Usage:

google-gmail-tool task export-obsidian [OPTIONS]

Options:

--today: Export tasks due today
--this-week: Export tasks due this week
--date YYYY-MM-DD: Export tasks for specific date
--range-start YYYY-MM-DD: Start of custom range
--range-end YYYY-MM-DD: End of custom range
--obsidian-root PATH: Obsidian vault root path
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Smart Merge Logic:

Preserves checked-off items
Updates task details if changed
Removes completed tasks (optional)
Adds new tasks

Examples:

# Export today's tasks
google-gmail-tool task export-obsidian --today

# Export this week's tasks
google-gmail-tool task export-obsidian --this-week

# Export custom date range
google-gmail-tool task export-obsidian \
    --range-start 2025-11-20 \
    --range-end 2025-11-27

📁 Drive Commands (Click to expand)

drive list - List Drive files

List files in Google Drive with filtering and sorting.

Usage:

google-gmail-tool drive list [OPTIONS]

Options:

--query "TEXT": Drive query string
--max-results N / -n N: Maximum results (default: 50)
--folder FOLDER_ID: List files in specific folder
--order-by FIELD: Sort by field (name, createdTime, modifiedTime desc)
--format FORMAT / -f FORMAT: Output format (json, text)
--text: Shorthand for --format text
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# List 50 most recent files
google-gmail-tool drive list

# List files in folder
google-gmail-tool drive list --folder 0ALlMmd1yT2TNUk9PVA

# Sort by name
google-gmail-tool drive list --order-by name -n 20

Output (JSON):

[
  {
    "id": "1abc...xyz",
    "name": "document.pdf",
    "mimeType": "application/pdf",
    "size": "1048576",
    "modifiedTime": "2025-11-20T10:30:00Z",
    "webViewLink": "https://drive.google.com/..."
  }
]

drive search - Search Drive files

Search for files and folders with common filters.

Usage:

google-gmail-tool drive search [OPTIONS]

Options:

--name "TEXT": Search by file/folder name
--type TYPE: Filter by type (document, spreadsheet, presentation, folder, pdf, image)
--owner OWNER: Filter by owner (me, others, anyone)
--shared: Show only shared files
--max-results N / -n N: Maximum results (default: 50)
--format FORMAT / -f FORMAT: Output format (json, text)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Search by name
google-gmail-tool drive search --name "report"

# Find PDFs I own
google-gmail-tool drive search --type pdf --owner me

# Find shared spreadsheets
google-gmail-tool drive search --type spreadsheet --shared

# Complex search
google-gmail-tool drive search \
    --name "2025" \
    --type document \
    --owner me \
    -n 100

drive upload-file - Upload file to Drive

Upload a local file to Google Drive.

Usage:

google-gmail-tool drive upload-file LOCAL_PATH [PARENT_ID] [OPTIONS]

Options:

LOCAL_PATH: Local file path (required)
PARENT_ID: Parent folder ID (optional, defaults to My Drive root)
--name NAME: Drive file name (defaults to local filename)
--description TEXT: File description
--mime-type TYPE: Override MIME type
--force / -f: Skip duplicate check
--format FORMAT: Output format (json, text)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Upload to My Drive root
google-gmail-tool drive upload-file document.pdf

# Upload to specific folder
google-gmail-tool drive upload-file report.pdf 0ALlMmd1yT2TNUk9PVA

# Upload with custom name
google-gmail-tool drive upload-file data.csv \
    --name "Sales Report 2025.csv"

drive download - Download file from Drive

Download a file from Google Drive to local filesystem.

Usage:

google-gmail-tool drive download FILE_ID OUTPUT_PATH [OPTIONS]

Options:

FILE_ID: Drive file ID (required)
OUTPUT_PATH: Local output path (required)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Download file
google-gmail-tool drive download 1abc...xyz document.pdf

# Download to specific directory
google-gmail-tool drive download 1abc...xyz ~/Downloads/report.pdf

🔐 Authentication Commands (Click to expand)

auth check - Verify credentials

Verify Google OAuth credentials and API access.

Usage:

google-gmail-tool auth check [-v|-vv|-vvv]

Environment Variables:

GOOGLE_GMAIL_TOOL_CREDENTIALS_JSON: Full OAuth2 credentials as JSON string
GOOGLE_GMAIL_TOOL_CREDENTIALS: Path to OAuth2 credentials JSON file

Validates:

OAuth credential format and validity
Access token refresh capability
Gmail API access
Calendar API access
Tasks API access
Drive API access

Examples:

# Check authentication
google-gmail-tool auth check

# Check with debug output
google-gmail-tool auth check -vv

Output:

🔐 Checking Google OAuth credentials...
✓ Credentials loaded successfully
✓ Gmail API access granted
✓ Calendar API access granted
✓ Tasks API access granted
✓ Drive API access granted

auth login - Complete OAuth flow

Complete OAuth flow to generate authorized credentials.

Usage:

google-gmail-tool auth login [OPTIONS]

Options:

--client-id ID: OAuth Client ID
--client-secret SECRET: OAuth Client Secret
--json-file PATH: Path to client secret JSON (alternative)
--output PATH / -o PATH: Output file for credentials (default: ~/.config/google-gmail-tool/credentials.json)
-v/-vv/-vvv: Verbosity (INFO/DEBUG/TRACE)

Examples:

# Login with client ID and secret
google-gmail-tool auth login \
    --client-id "123...apps.googleusercontent.com" \
    --client-secret "GOCSPX-..."

# Login with JSON file
google-gmail-tool auth login \
    --json-file ~/Downloads/client_secret.json

# Custom output location
google-gmail-tool auth login \
    --json-file ~/Downloads/client_secret.json \
    --output ~/.credentials/google.json

⚙️ Advanced Features (Click to expand)

Multi-Level Verbosity

Control logging detail with -v/-vv/-vvv flags:

No flag (WARNING): Only critical issues
-v (INFO): High-level operations, important events
-vv (DEBUG): Detailed operations, API calls, validation steps
-vvv (TRACE): Full request/response, library internals

Examples:

# Normal mode (warnings only)
google-gmail-tool mail list

# Info level
google-gmail-tool mail list -v

# Debug level
google-gmail-tool mail list -vv

# Trace level (includes Google API internals)
google-gmail-tool mail list -vvv

Shell Completion

Install tab completion for bash, zsh, or fish:

Bash:

eval "$(google-gmail-tool completion bash)"
# Or add to ~/.bashrc

Zsh:

eval "$(google-gmail-tool completion zsh)"
# Or add to ~/.zshrc

Fish:

google-gmail-tool completion fish > ~/.config/fish/completions/google-gmail-tool.fish

Output Formats

All commands support JSON and text output:

JSON (default):

google-gmail-tool mail list | jq '.[] | .subject'

Text (human-readable):

google-gmail-tool mail list --text

Pipeline Integration

Designed for Unix pipeline integration:

Examples:

# Extract email subjects
google-gmail-tool mail list | jq -r '.[] | .subject'

# Count unread messages
google-gmail-tool mail list --query "is:unread" | jq 'length'

# Complete first incomplete task
TASK_ID=$(google-gmail-tool task list -n 1 | jq -r '.[0].id')
google-gmail-tool task complete "$TASK_ID"

# Search and download Drive file
FILE_ID=$(google-gmail-tool drive search --name "report" | jq -r '.[0].id')
google-gmail-tool drive download "$FILE_ID" report.pdf

🔧 Troubleshooting (Click to expand)

Common Issues

Issue: "Credentials not found"

# Error
[ERROR] Credentials not found

Solution:

Set credentials environment variable:

export GOOGLE_GMAIL_TOOL_CREDENTIALS=~/.config/google-gmail-tool/credentials.json

Or use auth login to generate credentials:

google-gmail-tool auth login --json-file ~/Downloads/client_secret.json

Issue: "API access denied"

Solution:

Check API is enabled in Google Cloud Console
Verify OAuth scopes include required permissions
Re-run auth check:
```
google-gmail-tool auth check -vv
```

Issue: "Token expired"

Solution: Credentials include refresh token, should auto-refresh. If not:

# Re-authenticate
google-gmail-tool auth login --json-file ~/Downloads/client_secret.json

Issue: "Obsidian export fails"

Solution:

Set OBSIDIAN_ROOT environment variable:

export OBSIDIAN_ROOT=~/Documents/ObsidianVault

Or use --obsidian-root flag:

google-gmail-tool mail export-obsidian --obsidian-root ~/Documents/ObsidianVault

Getting Help

# Main help
google-gmail-tool --help

# Command group help
google-gmail-tool mail --help
google-gmail-tool calendar --help

# Specific command help
google-gmail-tool mail list --help
google-gmail-tool task create --help

Exit Codes

0: Success
1: General error (authentication, API error, validation failure)
2: Not found (message/event/task/file not found)

Output Formats

JSON (default):

Agent-friendly structured data
Suitable for parsing with jq
Consistent schema across commands

Text (--text flag):

Human-readable format
Tabular or list output
Good for terminal viewing

Best Practices

Use Environment Variables: Set GOOGLE_GMAIL_TOOL_CREDENTIALS and OBSIDIAN_ROOT for convenience
Enable Verbosity for Debugging: Use -vv or -vvv when troubleshooting
JSON Output for Scripts: Default JSON output is ideal for automation
Obsidian Integration: Use export commands to maintain synchronized notes
Pipeline with jq: Combine with jq for powerful data processing
Shell Completion: Install completion for better CLI experience

Resources

GitHub: https://github.com/dnvriend/google-gmail-tool
Google Cloud Console: https://console.cloud.google.com/apis/credentials
Gmail Search Syntax: https://support.google.com/mail/answer/7190
Obsidian: https://obsidian.md