--- title: "Google Merchant Center (Merchant API) ยท Hypamoon" description: "The Google Merchant Center (Merchant API) is open, signs in with OAuth and sends webhooks. What your AI chat can build with it on Hypamoon, with sources." url: https://hypamoon.com/connect-to/google-merchant-center --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Google Merchant Center (Merchant API) Product data and marketplaces # Connect Google Merchant Center (Merchant API) to Hypamoon Yes, with one catch. Google Merchant Center (Merchant API) has an open API that you can use yourself, but it signs in with OAuth only, and that takes more work in a Hypamoon adapter today. Open ## The check Three questions about the API of Google Merchant Center (Merchant API), answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://developers.google.com/merchant/api/guides/quickstart) **A key you create yourself**\ **Yes.** You create a service account in your own Google Cloud project, download its key and add it as a user in Merchant Center. [developers.google.com](https://developers.google.com/merchant/api/guides/authorization/access-your-account) **Versions or a changelog**\ **Yes.** Versions v1 and v1alpha with dated release notes; v1beta was switched off. [developers.google.com](https://developers.google.com/merchant/api/latest-updates) **How it signs in**\ OAuth 2.0, or a service account from your own Google Cloud project with access to your Merchant Center account; API keys are not supported. **Webhooks**\ **Yes.** It can tell your app when something changes. [developers.google.com](https://developers.google.com/merchant/api/latest-updates) **Hosting**\ Cloud ## Your own product feed desk on Google Merchant Center. - Products, statuses, issues and stock, straight from the Merchant API. - AI that reads disapprovals and proposes the fix, with you approving every change. - A weekly email with products that lost their listing. ### Ask your chat Answers straight from your Google Merchant Center (Merchant API) data, in Claude or another chat with the full Hypamoon connection. - Which products are disapproved right now, and for what reason? - Which products have a different price in Merchant Center than in my shop? ### On a schedule An agent checks Google Merchant Center (Merchant API) every 15 minutes and decides what happens next. 1. Every 15 minutes Products with an issue in Merchant Center. AI decides AI reads the issue and the product data, and proposes the change, such as a missing GTIN or a wrong price. Then The product is updated in Merchant Center. AI proposes, you approve ### Add Hypamoon Text messages, email, phone, payments and agents run in the same project as the adapter. - Agent on a schedule Every Monday, an agent emails you the products that lost their listing last week and why. Google Merchant Center (Merchant API) stays the core: your chat builds the rest on its API, as an adapter plus an app and agents in your Hypamoon project. Reading starts after you click Allow in the portal. Every change an agent or a chat makes in Google Merchant Center (Merchant API) waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Google Merchant Center (Merchant API) signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Google Merchant Center (Merchant API) takes more work: ask your chat to check this first. - You register as a developer once per Google Cloud project. The Merchant API replaces the Content API for Shopping. ## Try it in your chat Fill in what to read and write, and send it. Say this in your chat > Build the Hypamoon recipe build-an-adapter for Google Merchant Center (Merchant API). API docs: https://developers.google.com/merchant/api/guides/quickstart. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Google%20Merchant%20Center%20(Merchant%20API%29.%20API%20docs%3A%20https%3A%2F%2Fdevelopers.google.com%2Fmerchant%2Fapi%2Fguides%2Fquickstart.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.) In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. [The full recipe](https://hypamoon.com/r/build-an-adapter) ## Sources Checked on 7 November 2026. - [developers.google.com/merchant/api/guides/quickstart](https://developers.google.com/merchant/api/guides/quickstart) - [developers.google.com/merchant/api/guides/authorization/access-your-account](https://developers.google.com/merchant/api/guides/authorization/access-your-account) - [developers.google.com/merchant/api/latest-updates](https://developers.google.com/merchant/api/latest-updates) Google Merchant Center (Merchant API) is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with Google Merchant Center (Merchant API). Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in product data and marketplaces - [**Akeneo** Open](https://hypamoon.com/connect-to/akeneo) - [**Amazon Selling Partner API** Possible](https://hypamoon.com/connect-to/amazon-selling-partner-api) - [**Channable** Open](https://hypamoon.com/connect-to/channable) - [**ChannelEngine** Open](https://hypamoon.com/connect-to/channelengine) - [**eBay** Possible](https://hypamoon.com/connect-to/ebay) - [**Etsy** Possible](https://hypamoon.com/connect-to/etsy) - [**Plytix** Open](https://hypamoon.com/connect-to/plytix) - [**Lengow** Open](https://hypamoon.com/connect-to/lengow) - [**BaseLinker** Open](https://hypamoon.com/connect-to/baselinker) - [**Mirakl (seller API)** Open](https://hypamoon.com/connect-to/mirakl) - [**Kaufland Global Marketplace** Open](https://hypamoon.com/connect-to/kaufland) - [**OTTO Market** Possible](https://hypamoon.com/connect-to/otto-market) - [**Allegro** Open](https://hypamoon.com/connect-to/allegro) - [**Walmart Marketplace** Open](https://hypamoon.com/connect-to/walmart-marketplace) - [**Salsify** Unknown](https://hypamoon.com/connect-to/salsify) - [**Cloudinary** Open](https://hypamoon.com/connect-to/cloudinary) - [**Productsup** Possible](https://hypamoon.com/connect-to/productsup) - [**Feedonomics** Possible](https://hypamoon.com/connect-to/feedonomics) - [**Zalando (zDirect)** Open](https://hypamoon.com/connect-to/zalando) - [**Cdiscount (Octopia Seller API)** Open](https://hypamoon.com/connect-to/cdiscount) - [**EffectConnect** Open](https://hypamoon.com/connect-to/effect-connect) - [**Tradebyte (TB.One)** Unknown](https://hypamoon.com/connect-to/tradebyte) [All 1094 tools](https://hypamoon.com/connect-to) ## Tool not listed? Ask the chat to check its API. The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found. Say this in your chat > Check if \[software\] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used. [Open in Claude](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) Fill in the name of your software. Checking needs no connection to Hypamoon. ## Ready to connect Google Merchant Center (Merchant API)? Connect your chat once, then ask it to build the adapter. [Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=google-merchant-center) Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~google-merchant-center#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~google-merchant-center#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)