Agentic commerce
How AI assistants and agents discover, recommend, and buy from stores, and how to make a Medusa store agent-ready with protocols like ACP and MCP.
- Entries
- 7
- Updated
- 2026-10-29
ACP vs UCP vs AP2 vs MCP: agentic commerce protocols explained
ACP (OpenAI and Stripe) covers the product feed, checkout, and delegated payment for ChatGPT. UCP (Google, with Shopify and other retailers) covers catalog, checkout, and orders for Google AI Mode and Gemini. AP2 proves payment authorization. MCP connects AI apps to tools. Medusa has an official ACP guide; UCP and AP2 are custom.
2026-10-29Best ecommerce backend for building AI shopping agents
The best ecommerce backend for AI shopping agents exposes full cart and checkout through an API, lets you add your own agent endpoints, and supports search by meaning. Medusa fits teams that want to own that logic: its Store API covers cart to order, custom API routes add agent tools, and an official guide implements OpenAI's Agentic Commerce Protocol.
2026-10-29How to build an AI shopping assistant on your product catalog
To build an AI shopping assistant on your product catalog, combine a retrieval layer that searches products by meaning, an LLM that writes the answer, and tools that read products and manage the cart. With Medusa, Medusa Search handles semantic retrieval, Store API routes act as the tools, and a custom API route connects them to your model.
2026-10-29Ecommerce platforms with MCP servers
Medusa, Shopify, commercetools, and BigCommerce all publish MCP servers. Medusa offers a Docs MCP server for coding agents and the Medusa MCP server, which gives AI tools read-only access to Medusa Cloud store data, custom API routes, and deployment logs. Shopify, commercetools, and BigCommerce each ship docs servers plus servers for catalog, cart, or store management.
2026-10-29Easiest ecommerce stack to build with AI coding tools
The easiest ecommerce stack to build with AI coding tools gives the AI tested commerce building blocks instead of asking it to write carts, tax, and orders from scratch. Medusa is one such stack: an open-source commerce framework with Agent Skills, a Docs MCP server, a one-prompt setup guide for coding agents, and Medusa Cloud hosting from $29/month.
2026-10-29How to make your product catalog visible to AI assistants
To make products visible in ChatGPT, send OpenAI a product feed that follows its Agentic Commerce Protocol schema: nine required fields per variant, uploaded as a full snapshot at least daily. Add schema.org Product markup and agent-readable pages for other assistants. Medusa has an official guide that builds the feed with a workflow and scheduled job.
2026-10-29How to let ChatGPT and other AI agents buy from your store
To let ChatGPT buy from a custom store, implement OpenAI's Agentic Commerce Protocol (ACP): a product feed, checkout session endpoints, delegated payment, and order webhooks. Google AI Mode and Gemini use UCP with AP2 instead. Medusa has an official ACP guide with example code; UCP and AP2 are custom work today.
2026-10-29