Google Contacts
Allow AI systems to list, search, and manage contacts via Google Contacts.
Open source Open in the app JSON README (API)
About
Allow AI systems to list, search, and manage contacts via Google Contacts.
Details
- Kind
- MCP servers
- Topic
- No topic detected
- Publisher
- domdomegg
- Origin
- official
- Category
- ferramentas
- Transport
- local
- Version
- 1.3.0
- Stars
- 3
- Forks
- 2
- Last push
- 2026-09-03T02:06:59Z
- Repository state
- ativo
- Language
- TypeScript
- Added
- 2026-08-29 03:02:43
- Updated
- 2026-08-29 03:02:43
- Origin id
io.github.domdomegg/google-contacts-mcp
README
# 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](https://console.cloud.google.com/)
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
```bash
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](https://adamjones.me/install-mcp/?url=http://localhost:3000/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:
```mermaid
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
| Tool | Description |
|------|-------------|
| `contacts_list` | List contacts with names, emails, phones, organizations, birthdays, events, URLs, addresses, nicknames, relations, IM usernames, genders, external IDs, client data, and custom fields |
| `contacts_search` | Search contacts by name, email, or phone |
| `directory_search` | Search organization directory for coworkers |
| `contact_get` | Get detailed info for a single contact |
| `contact_create` | Create a new contact |
| `contact_update` | Update an existing contact |
| `contact_delete` | Permanently delete a contact |
| `contact_photo_update` | Set or replace a contact's photo |
| `contact_photo_delete` | Remove a contact's photo |
| `contact_groups_list` | List contact groups (labels) |
| `contact_group_get` | Get a contact group, including its members |
| `contact_group_create` | Create a new contact group |
| `contact_group_update` | Rename a contact group |
| `contact_group_delete` | Permanently delete a contact group |
| `contact_group_members_modify` | Add 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](https://semver.org/).
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.