gmail – OpenClaw Skill

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name: gmail description: | 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). compatibility: Requires network access and valid Maton API key metadata: author: maton version: "1.0"

Gmail

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

Quick Start

# List messages
curl -s -X GET "https://gateway.maton.ai/google-mail/gmail/v1/users/me/messages?maxResults=10" -H "Authorization: Bearer $MATON_API_KEY"

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:

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

curl -s -X GET "https://ctrl.maton.ai/connections?app=google-mail&status=ACTIVE" -H "Authorization: Bearer $MATON_API_KEY"

Create Connection

curl -s -X POST "https://ctrl.maton.ai/connections" -H "Content-Type: application/json" -H "Authorization: Bearer $MATON_API_KEY" -d '{"app": "google-mail"}'

Get Connection

curl -s -X GET "https://ctrl.maton.ai/connections/{connection_id}" -H "Authorization: Bearer $MATON_API_KEY"

Response:

{
  "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

curl -s -X DELETE "https://ctrl.maton.ai/connections/{connection_id}" -H "Authorization: Bearer $MATON_API_KEY"

Specifying Connection

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

curl -s -X GET "https://gateway.maton.ai/google-mail/gmail/v1/users/me/messages" -H "Authorization: Bearer $MATON_API_KEY" -H "Maton-Connection: 21fd90f9-5935-43cd-b6c8-bde9d915ca80"

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

API Reference

List Messages

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

With query filter:

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

Get Message

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

With metadata only:

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

Send Message

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

{
  "raw": "BASE64_ENCODED_EMAIL"
}

List Labels

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

List Threads

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

Get Thread

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

Modify Message Labels

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

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

Trash Message

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

Create Draft

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

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

Send Draft

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

{
  "id": "{draftId}"
}

Get Profile

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

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

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

Resources

• Gmail API Overview
• List Messages
• Get Message
• Send Message
• List Threads
• List Labels
• Create Draft