Google-Contacts-MCP

Minimal MCP server for the Google People API — read-only contact search and lookup. Built as a companion to Claude Code's schedule-manager plugin and any agent that needs to resolve a person's name to an email address before adding them to a calendar event.

Why this exists

The official Google Workspace MCP covers Calendar, Docs, Sheets, Slides, Gmail, and Chat — but not Contacts. This is a thin, single-purpose server for that gap.

Tools

Tool	Purpose
search_contacts(query, page_size?)	Search by name, email, phone, or organization
get_contact(resource_name)	Fetch full details for one contact
list_contacts(page_size?, page_token?)	Paginated full enumeration

All operations are read-only. The OAuth scope requested is contacts.readonly.

Setup

1. Install

npm install -g @danielrosehill/google-contacts-mcp
# or run via npx without installing

2. OAuth credentials

Create an OAuth 2.0 Client ID (Desktop app type) at https://console.cloud.google.com/apis/credentials and enable the People API for your project.

Place the downloaded credentials JSON at:

~/.config/google-contacts-mcp/credentials.json

(Override with GOOGLE_CONTACTS_CREDENTIALS_PATH env var.)

3. Authorise

google-contacts-mcp auth

Follow the prompt: visit the URL, approve, paste the code back. Token is written to ~/.config/google-contacts-mcp/token.json (chmod 600).

4. Headless / env-var configuration (optional)

For deployment without a token file, set:

export GOOGLE_CONTACTS_CLIENT_ID=...
export GOOGLE_CONTACTS_CLIENT_SECRET=...
export GOOGLE_CONTACTS_REFRESH_TOKEN=...

The auth command prints these for you after a successful authorisation.

Wiring up to Claude Code

claude mcp add google-contacts -- npx -y @danielrosehill/google-contacts-mcp

If using env vars instead of a token file, pass them through:

claude mcp add google-contacts \
  -e GOOGLE_CONTACTS_CLIENT_ID=$GOOGLE_CONTACTS_CLIENT_ID \
  -e GOOGLE_CONTACTS_CLIENT_SECRET=$GOOGLE_CONTACTS_CLIENT_SECRET \
  -e GOOGLE_CONTACTS_REFRESH_TOKEN=$GOOGLE_CONTACTS_REFRESH_TOKEN \
  -- npx -y @danielrosehill/google-contacts-mcp

Development

git clone https://github.com/danielrosehill/Google-Contacts-MCP
cd Google-Contacts-MCP
npm install
npm run build
node dist/index.js  # smoke test (will block on stdin — that's expected for an MCP server)

License

MIT