Camberstack: Google Ads MCP server

Camberstack: a Google Ads MCP server that acts

Connect Google Ads to Claude, ChatGPT, Cursor or any MCP client. Your AI checks conversion tracking, finds where the budget goes with nothing to show for it, and proposes fixes. Nothing changes in the account until you approve a specific proposal, and every applied change can be undone.

Hosted: https://camberstack.io/mcp (free plan: unlimited diagnosis + 3 applied changes; Pro $49/mo unlimited). Setup: https://camberstack.io/#setup

Tools

Writes are limited to: add negative keywords, pause/enable a campaign, ad group or keyword, set a campaign's daily budget (never a shared budget). Enabling a campaign and more-than-doubling a budget carry a ⚠ line in the proposal summary. No campaign creation, bid strategy changes or deletions of anything the user built.

How auth works

Camberstack is an OAuth 2.1 authorization server for MCP clients (dynamic client registration, PKCE). Its /authorize sends the user to Google for adwords + openid email. The Google refresh token is stored AES-256-GCM encrypted and never leaves the server. The MCP client gets Camberstack's own tokens, which are stored only as SHA-256 hashes.

Run it

npm ci && npm test
ENCRYPTION_KEY=$(openssl rand -hex 32) \
GOOGLE_CLIENT_ID=… GOOGLE_CLIENT_SECRET=… GOOGLE_ADS_DEVELOPER_TOKEN=… \
BASE_URL=https://your.host npm run dev

scripts/try-account.ts runs the read tools against a real account from an existing refresh token, skipping OAuth. Use it for dogfooding.

License

MIT