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Google Contacts

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Allow AI systems to list, search, and manage contacts via Google Contacts.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package google-contacts-mcp
Claude Code 
claude mcp add google-contacts -e 'GOOGLE_ACCESS_TOKEN=<your google_access_token>' -- npx -y google-contacts-mcp@1.3.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "google-contacts": {
            "command": "npx",
            "args": [
                "-y",
                "google-contacts-mcp@1.3.0"
            ],
            "env": {
                "GOOGLE_ACCESS_TOKEN": "<your google_access_token>"
            }
        }
    }
}

Environment variables

  • GOOGLE_ACCESS_TOKEN required secret Google OAuth access token.
NPM package google-contacts-mcp
Claude Code 
claude mcp add google-contacts -e 'MCP_TRANSPORT=<MCP_TRANSPORT>' -e 'GOOGLE_CLIENT_ID=<GOOGLE_CLIENT_ID>' -e 'GOOGLE_CLIENT_SECRET=<your google_client_secret>' -- npx -y google-contacts-mcp@1.3.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "google-contacts": {
            "command": "npx",
            "args": [
                "-y",
                "google-contacts-mcp@1.3.0"
            ],
            "env": {
                "MCP_TRANSPORT": "<MCP_TRANSPORT>",
                "GOOGLE_CLIENT_ID": "<GOOGLE_CLIENT_ID>",
                "GOOGLE_CLIENT_SECRET": "<your google_client_secret>"
            }
        }
    }
}

Environment variables

  • MCP_TRANSPORT required Transport type.
  • GOOGLE_CLIENT_ID required Google OAuth client ID.
  • GOOGLE_CLIENT_SECRET required secret Google OAuth client secret.

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. google-contacts-mcp
  2. Use Cases
  3. Setup
  4. Architecture
  5. Tools
  6. Contributing
  7. Releases

google-contacts-mcp

MCP server for Google Contacts - list, search, and manage contacts.

Use Cases

Email lookup: "See the latest JIRA ticket that's come in. Can we email Sarah from the security team to get their input?" → finds Sarah's email and drafts the message.

Business card capture: After a networking event, snap photos of business cards → your assistant extracts the details and adds them as contacts with a note about where you met.

Find connections: "Who do I know at Google?" or "I'm visiting London next week - who should I catch up with?" → search your personal network.

Call reminder: "Remind me to call Mike at 3pm" → creates a calendar event with Mike's phone number attached so you can dial straight from the reminder.

Contact updates: You receive an out-of-office saying someone left their company with a new personal email → your assistant updates their contact automatically.

(These are just examples - any workflow that needs contact lookup or management can use this.)

Setup

1. Create Google OAuth credentials
  1. Go to Google Cloud Console
  2. Create a new project (or use existing)
  3. Enable the People API
  4. Go to APIs & Services → OAuth consent screen, set up consent screen
  5. Go to APIs & Services → Credentials → Create Credentials → OAuth client ID
  6. Choose Web application
  7. Add http://localhost:3000/callback to Authorized redirect URIs
  8. Note your Client ID and Client Secret
2. Run the server
GOOGLE_CLIENT_ID='your-client-id' \
GOOGLE_CLIENT_SECRET='your-client-secret' \
MCP_TRANSPORT=http \
npm start

The server runs on http://localhost:3000 by default. Change with PORT=3001.

3. Add to your MCP client

With the server running, follow the instructions on install-mcp, which generates the right config for your MCP client (Claude Code, Claude Desktop, Cursor, Cline, VS Code, and more).

Architecture

This server acts as an OAuth proxy to Google:

graph LR
    A[MCP client] <--> B[google-contacts-mcp] <--> C[Google OAuth/API]
  1. Server advertises itself as an OAuth authorization server via /.well-known/oauth-authorization-server
  2. /register returns the Google OAuth client credentials
  3. /authorize redirects to Google, encoding the client's callback URL in state
  4. /callback receives the code from Google and forwards to the client's callback
  5. /token proxies token requests to Google, injecting client credentials
  6. /mcp handles MCP requests, using the bearer token to call People API

The server holds no tokens or state - it just proxies OAuth to Google.

Tools

ToolDescription
contacts_listList contacts with names, emails, phones, organizations, birthdays, events, URLs, addresses, nicknames, relations, IM usernames, genders, external IDs, client data, and custom fields
contacts_searchSearch contacts by name, email, or phone
directory_searchSearch organization directory for coworkers
contact_getGet detailed info for a single contact
contact_createCreate a new contact
contact_updateUpdate an existing contact
contact_deletePermanently delete a contact
contact_photo_updateSet or replace a contact's photo
contact_photo_deleteRemove a contact's photo
contact_groups_listList contact groups (labels)
contact_group_getGet a contact group, including its members
contact_group_createCreate a new contact group
contact_group_updateRename a contact group
contact_group_deletePermanently delete a contact group
contact_group_members_modifyAdd or remove contacts from a contact group

Contributing

Pull requests are welcomed on GitHub! To get started:

  1. Install Git and Node.js
  2. Clone the repository
  3. Install dependencies with npm install
  4. Run npm run test to run tests
  5. Build with npm run build

Releases

Versions follow the semantic versioning spec.

To release:

  1. Use npm version <major | minor | patch> to bump the version
  2. Run git push --follow-tags to push with tags
  3. Wait for GitHub Actions to publish to the NPM registry.

Frequently asked questions

What is Google Contacts?

Allow AI systems to list, search, and manage contacts via Google Contacts.

How do I install Google Contacts?

It runs on your machine. In Claude Code: claude mcp add google-contacts -e 'GOOGLE_ACCESS_TOKEN=<your google_access_token>' -- npx -y google-contacts-mcp@1.3.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Google Contacts need an API key?

Yes. It expects GOOGLE_ACCESS_TOKEN, MCP_TRANSPORT, GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET, which you set in its configuration.

Is Google Contacts open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Google Contacts?

It is published by domdomegg. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.