Google Merchant Center API — product feed, performance metrics, Shopping Ads, conversion tracking. OAuth 2.0 via Google Cloud Console. Free for organic listings; paid for Shopping Ads.
What you'll connect
Google Merchant Center API — product feed, performance metrics, Shopping Ads, conversion tracking. OAuth 2.0 via Google Cloud Console. Free for organic listings; paid for Shopping Ads.
Prerequisites
Google Merchant Center account (free at merchants.google.com).
Google Cloud project with Content API for Shopping enabled.
OAuth 2.0 client credentials.
Optional: Google Ads account for paid Shopping campaigns.
Connect in 60 seconds
1
Text us "Google Shopping" with your phone number.
2
Authorize Commerce Index in the Google OAuth popup.
3
We push your existing catalog as a Merchant Center feed (one-time backfill).
4
Hourly sync after that — inventory + price changes propagate to Google in <1 hour.
What syncs after connection
Product feed
Title, description, price, GTIN, image_link, availability — full Merchant Center spec
Inventory updates
productstatuses API + supplemental feeds for high-frequency updates
Performance
Impressions, clicks, conversions per product via Reports API