Developing
PPC Land notes the newsletter's performance claims come with no sample sizes or comparison sets.
In 60 seconds
- Retailers should upload the full sellable catalog to Microsoft Merchant Center, not just SKUs in paid campaigns, with accurate titles, GTIN or MPN, price, availability and category.
- Feeds should refresh at least daily, and more often for fast-moving inventory or pricing.
- UCP commerce fields to add include a store-wide return policy, customer support settings, a unique merchant_item_id and consumer notice fields where relevant.
- Microsoft launched Copilot Checkout and Brand Agents on January 8, 2026, with merchants remaining the merchant of record.
Impact Layer
- What changed
- Microsoft is asking retailers to prepare structured catalog data for agent-led checkout.
- Why it matters
- Agentic shopping depends on clean, complete product data, not just ad-ready SKUs.
- Who is affected
- Retailers and agencies managing Microsoft Merchant Center feeds.
- Martech stack area
- Advertising, Commerce
- Stack impact
- Audit your feed for completeness and refresh frequency, and add the UCP fields Microsoft lists.
- Business impact
- Low Based on PPC Land's October 6 summary of the newsletter. The article notes the newsletter's performance claims lack sample sizes and comparison sets.
- Related technologies
- What to watch
- The adoption of UCP feeds and Copilot Checkout merchant numbers.
PPC Land’s October 6, 2026 summary of Microsoft Advertising’s monthly product newsletter includes a product catalog checklist for retailers.
The checklist
- Upload the full sellable catalog to Microsoft Merchant Center, not just SKUs in paid campaigns.
- Include accurate titles, descriptions, GTIN or MPN, price, availability and category for each product.
- Refresh feeds at least daily, and more often for fast-moving inventory or pricing.
- Add Universal Commerce Protocol (UCP) fields: a store-wide return policy, customer support settings, a unique merchant_item_id per product and consumer_notice_type and consumer_notice_message where relevant.
Context
Microsoft launched Copilot Checkout and Brand Agents on January 8, 2026, with merchants remaining the merchant of record. According to MediaPost, UCP feeds became generally available in the US on April 21, with more than 500,000 merchants in Copilot Checkout. A webinar on agentic commerce was scheduled for October 8. An Originality.ai scan in May found 26 public UCP implementations across more than 3 million sites; it measured public profiles, not Merchant Center feeds.
Our read
The checklist is basic data hygiene that also supports agent shopping. The newsletter’s performance claims come without sample sizes, so treat them as promotion.
Sources
- PPC Land: Microsoft Advertising October 2026 newsletter (HubSpot integration, LinkedIn company lists, catalog checklist) (opens in a new tab)
Source of the catalog checklist, UCP fields and Copilot Checkout background.