Product Feed API

A product feed API is a programmatic interface for moving product catalog data between an ecommerce system and a sales channel automatically, instead of exporting and uploading files by hand.

Last updated: 2026-10-03

What Is a Product Feed API?

A product feed API is a programmatic interface for exchanging product catalog data between systems. Instead of exporting a CSV and uploading it to each channel, an API moves the data automatically between your ecommerce platform and destinations such as Google Merchant Center, Meta Commerce Manager and AI shopping platforms.

Product feed APIs come in several forms:

  • Source APIs: Your ecommerce platform's API (Shopify Admin API, Magento REST API, Salesforce Commerce Cloud OCAPI) that exposes product data for extraction
  • Destination APIs: Channel APIs that accept product data (Google Content API for Shopping, Meta Catalog API, OpenAI commerce feed endpoints)
  • Middleware: platforms that sit between source and destination APIs and handle transformation in between

AI shopping has made feed APIs more important. Assistants need current, complete product data to recommend with confidence. A CSV uploaded once a day cannot keep pace with inventory and price changes.

Major Product Feed API Standards

Google Content API, Meta Catalog API and the OpenAI feed specification cover most retailers. MCP is the live-query alternative.

The key product feed API standards retailers need to know:

Google Content API for Shopping. The primary API for managing product data in Google Merchant Center. Supports real-time inventory and price updates, batch operations for large catalogs, and integration with Google Shopping, Google AI Mode, and Performance Max campaigns. Well-documented with extensive client libraries.

Meta Catalog API (Commerce Manager). Manages product catalogs for Facebook Shops, Instagram Shopping, and Meta advertising. Supports batch and real-time updates, with specific requirements for image dimensions, product categorization, and availability fields.

OpenAI product feed specification. The feed format for ChatGPT Shopping. It defines required fields, content guidelines and the structure that lets ChatGPT read and recommend products.

Model Context Protocol (MCP). MCP is a different model. Instead of pushing periodic updates, it lets an assistant query live inventory, pricing and product details on demand.

Product Feed APIs for AI Commerce

AI platforms expect fresher updates, richer data and several formats at once.

Traditional feed APIs were built for channels that update daily or hourly. AI shopping raises the bar:

Freshness. When an assistant recommends a product and the shopper tries to buy it, it needs to be in stock at the stated price. Stale data hurts the shopper and lowers the platform's confidence in your feed.

Richness. Traditional feeds need title, price, image and availability. AI feeds also need plain-language descriptions, complete attributes and use-case information. Product data enrichment is the work of adding that to the catalog so the feed can carry it.

Several formats. OpenAI's specification differs from Perplexity's Merchant Program requirements, which differ from Merchant Center. Feed management handles the translation.

The API is plumbing. What flows through it is the product information, and that is where most of the problems and most of the value sit. Paz handles that side for ecommerce teams: a Paz expert fixes the catalog data behind feed issues at the source, our experts check the changes against agreed guidelines, and the fix carries into whichever feeds you run. See how the product feeds service works.

FAQ

Do I need a product feed API or can I use CSV files?+
CSV works for smaller catalogs on channels that update daily. For AI shopping channels, where stale price or stock costs trust, API-based feeds are the better choice. Most commerce platforms and feed tools support both.
Which product feed API is most important for AI commerce?+
The OpenAI specification for ChatGPT Shopping and the Google Content API for AI Mode cover the two largest surfaces. Perplexity has its own Merchant Program requirements. The catalog data behind all of them is shared.
How often should product feed APIs update?+
As close to real time as your systems allow for price and stock, and at least every few hours. Where a platform supports MCP, the assistant queries live data and the update schedule stops mattering.

Related terms

Product Feed Management

Product feed management is the work of formatting, keeping current and distributing structured product data to the channels where shoppers find and buy products: Google Shopping, marketplaces and AI shopping assistants.

Product Feed Optimization for AI

Product feed optimization for AI is the practice of completing and improving the product data in your feeds so AI shopping assistants can understand, match and recommend your products.

Model Context Protocol (MCP)

MCP is an open standard, created by Anthropic and now governed by the Linux Foundation, that gives AI agents one common way to connect to external data sources and tools in real time.

AI Commerce Protocols

AI commerce protocols are the open standards (ACP, UCP, MCP, plus the payment-side AP2, Visa TAP and Mastercard Agent Pay) that define how AI agents discover products, access merchant systems and complete purchases.

AI Catalog Management: What It Is and How to Get It Done

AI catalog management uses AI to validate, enrich, categorize, optimize and distribute product data across sales channels, with a person reviewing the changes that matter.

How AI-ready are your products?

Check one product page for the information gaps that keep it out of AI answers and search results. If you want the fixes handled, Paz experts do that work for ecommerce teams.

Run free report →How Paz works