Agentic commerce guides for online shops
These guides explain, from the merchant's side, how AI assistants find, compare and buy products, and what a shop changes so they can. Each one answers its question in the first lines and names its sources. Foundations covers the basics, Discover covers being named in AI answers, and Convert covers how agents order and pay.
Where should a merchant new to agentic commerce start?
Read the definition first, then what it means for a Swiss shop, then how assistants pick products. The technical guides on protocols, llms.txt, GTINs and variants come after, and measurement last.
- What is agentic commerce, and how is it different from ecommerce? The definition, a comparison with ecommerce and the five stages of an agent purchase.
- How does agentic commerce work for an online shop in Switzerland? What is live in Switzerland today, and how CHF, VAT, TWINT and delivery reach an agent.
- How do you get your products recommended by ChatGPT? What OpenAI says ChatGPT ranks products on, and the order of work for a shop.
- GEO vs SEO, what changes for an online shop? Which SEO work still counts for AI answers, and what assistants reward on top of it.
- UCP vs ACP vs AP2 vs MCP, which protocol does what in a purchase? Owner, launch date and status of each buying protocol, and which ones your channels need.
- What does llms.txt do for ecommerce, next to Markdown and JSON-LD? What Google says about llms.txt, who reads it, and why JSON-LD comes first.
- Do AI shopping agents need a GTIN to compare your product? What Merchant Center and the ChatGPT feed ask for, and what to do without a GTIN.
- How does ProductGroup schema declare sizes and variants for agents? A JSON-LD example for sizes and colours, with the properties Google supports.
- What is share of model, and how do you measure it? How to count how often assistants name you, and how many runs a reliable rate needs.
Foundations
What agentic commerce is and how an agent purchase unfolds.
- How does agentic commerce work for an online shop in Switzerland? Agentic commerce in Switzerland: CHF prices with VAT in Offer data, TWINT at checkout, Swiss delivery as shippingDetails, and our audit of 240 shops.
- What is agentic commerce, and how is it different from ecommerce? What is agentic commerce? A plain definition, a comparison with ecommerce, named examples from ChatGPT, Google and Perplexity, and what a shop fixes first.
Discover
How assistants find, judge and cite pages, and what a shop can publish for them.
- GEO vs SEO, what changes for an online shop? GEO vs SEO for online shops: both start with crawling and indexing, 76.1% of AI Overview citations rank in the top 10, and what AI answers add.
- How do you get your products recommended by ChatGPT? How to get your products recommended by ChatGPT: what OpenAI says it ranks on, how product feeds reach it, and what the GEO research measured.
- How does ProductGroup schema declare sizes and variants for agents? How to mark up sizes and colours with ProductGroup, hasVariant and variesBy, with a JSON-LD example and the six variesBy values Google supports.
- What does llms.txt do for ecommerce, next to Markdown and JSON-LD? llms.txt for ecommerce explained: Google says AI Overviews ignore it, who does read it, and why JSON-LD product data comes first for shopping agents.
- What is share of model, and how do you measure it? What share of model means, the two ways to calculate it, how many prompt runs a reliable rate needs, and why every AI visibility figure needs an interval.
- Do AI shopping agents need a GTIN to compare your product? Do you need a GTIN for AI shopping agents? Merchant Center lists it as recommended, OpenAI's feed as optional, and agents use it to match products.
Convert
How agents place orders and pay, and what a merchant has to set up so they can.
Where can you see a buying mission from start to finish?
The use cases trace one buying mission or one audit end to end, field by field, from the shopper's request to the checkout. Each one says whether its data was measured on a real shop or constructed to show the mechanics, so you know how far to trust every figure in it.
See all use cases, look up a term in the glossary or read every article by date on the agentic commerce blog.
- Audit, Online retail, French-speaking Switzerland How ready are Swiss online shops for AI shopping agents?
- Worked example, Sports retail, Switzerland How an AI shopping agent compares gravel bikes under CHF 4,000
- Worked example, B2B supplies, DACH How an AI purchasing agent reorders office supplies under a standing mandate
- Audit, Food and confectionery, Switzerland A chocolatier AI agents could recommend but not buy from
Test what you just read on your own shop
The free readiness check applies the same rules as these guides to one of your product pages and lists what to fix, in under a minute.