Agent skill

gmail

Gmail API integration with managed OAuth. Read, send, and manage emails, threads, labels, and drafts. Use this skill when users want to interact with Gmail. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway).

View SKILL.md on GitHub Repository
Stars 1,878
Forks 294

Install this agent skill to your Project

npx add-skill https://github.com/LeoYeAI/openclaw-master-skills/tree/main/skills/gmail

Metadata

Additional technical details for this skill

author
maton
version
1.0
clawdbot 
{
    "emoji": "\ud83e\udde0",
    "requires": {
        "env": [
            "MATON_API_KEY"
        ]
    }
}

SKILL.md

Gmail

Access the Gmail API with managed OAuth authentication. Read, send, and manage emails, threads, labels, and drafts.

Quick Start

bash
# List messages
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/google-mail/gmail/v1/users/me/messages?maxResults=10')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://gateway.maton.ai/google-mail/{native-api-path}

Replace {native-api-path} with the actual Gmail API endpoint path. The gateway proxies requests to gmail.googleapis.com and automatically injects your OAuth token.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

bash
export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

  1. Sign in or create an account at maton.ai
  2. Go to maton.ai/settings
  3. Copy your API key

Connection Management

Manage your Google OAuth connections at https://ctrl.maton.ai.

List Connections

bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=google-mail&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

bash
python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'google-mail'}).encode()
req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

json
{
  "connection": {
    "connection_id": "21fd90f9-5935-43cd-b6c8-bde9d915ca80",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "google-mail",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple Gmail connections, specify which one to use with the Maton-Connection header:

bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://gateway.maton.ai/google-mail/gmail/v1/users/me/messages')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '21fd90f9-5935-43cd-b6c8-bde9d915ca80')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If omitted, the gateway uses the default (oldest) active connection.

API Reference

List Messages

bash
GET /google-mail/gmail/v1/users/me/messages?maxResults=10

With query filter:

bash
GET /google-mail/gmail/v1/users/me/messages?q=is:unread&maxResults=10

Get Message

bash
GET /google-mail/gmail/v1/users/me/messages/{messageId}

With metadata only:

bash
GET /google-mail/gmail/v1/users/me/messages/{messageId}?format=metadata&metadataHeaders=From&metadataHeaders=Subject&metadataHeaders=Date

Send Message

bash
POST /google-mail/gmail/v1/users/me/messages/send
Content-Type: application/json

{
  "raw": "BASE64_ENCODED_EMAIL"
}

List Labels

bash
GET /google-mail/gmail/v1/users/me/labels

List Threads

bash
GET /google-mail/gmail/v1/users/me/threads?maxResults=10

Get Thread

bash
GET /google-mail/gmail/v1/users/me/threads/{threadId}

Modify Message Labels

bash
POST /google-mail/gmail/v1/users/me/messages/{messageId}/modify
Content-Type: application/json

{
  "addLabelIds": ["STARRED"],
  "removeLabelIds": ["UNREAD"]
}

Trash Message

bash
POST /google-mail/gmail/v1/users/me/messages/{messageId}/trash

Create Draft

bash
POST /google-mail/gmail/v1/users/me/drafts
Content-Type: application/json

{
  "message": {
    "raw": "BASE64URL_ENCODED_EMAIL"
  }
}

Send Draft

bash
POST /google-mail/gmail/v1/users/me/drafts/send
Content-Type: application/json

{
  "id": "{draftId}"
}

Get Profile

bash
GET /google-mail/gmail/v1/users/me/profile

Query Operators

Use in the q parameter:

  • is:unread - Unread messages
  • is:starred - Starred messages
  • from:email@example.com - From specific sender
  • to:email@example.com - To specific recipient
  • subject:keyword - Subject contains keyword
  • after:2024/01/01 - After date
  • before:2024/12/31 - Before date
  • has:attachment - Has attachments

Code Examples

JavaScript

javascript
const response = await fetch(
  'https://gateway.maton.ai/google-mail/gmail/v1/users/me/messages?maxResults=10',
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);

Python

python
import os
import requests

response = requests.get(
    'https://gateway.maton.ai/google-mail/gmail/v1/users/me/messages',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'},
    params={'maxResults': 10, 'q': 'is:unread'}
)

Notes

  • Use me as userId for the authenticated user
  • Message body is base64url encoded in the raw field
  • Common labels: INBOX, SENT, DRAFT, STARRED, UNREAD, TRASH
  • IMPORTANT: When using curl commands, use curl -g when URLs contain brackets (fields[], sort[], records[]) to disable glob parsing
  • IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments. You may get "Invalid API key" errors when piping.

Error Handling

Status Meaning
400 Missing Gmail connection
401 Invalid or missing Maton API key
429 Rate limited (10 req/sec per account)
4xx/5xx Passthrough error from Gmail API

Troubleshooting: API Key Issues

  1. Check that the MATON_API_KEY environment variable is set:
bash
echo $MATON_API_KEY
  1. Verify the API key is valid by listing connections:
bash
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Troubleshooting: Invalid App Name

  1. Ensure your URL path starts with google-mail. For example:
  • Correct: https://gateway.maton.ai/google-mail/gmail/v1/users/me/messages
  • Incorrect: https://gateway.maton.ai/gmail/v1/users/me/messages

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