Four hubs. One record. Trading every day.
Every hub carries the same record, the same gate, the same payment rail and a person who answers. Buying agents from ChatGPT, Claude, Gemini, Copilot, Grok, Perplexity and Mistral attach to every door.
The four hubs
Each hub has one door, on the Model Context Protocol (MCP), the open standard for connecting artificial intelligence (AI) agents to tools. Agent-to-Agent (A2A) cards at every hub.
A2A-Grocery.ai — Agentic commerce hub for the grocery shelf. 20 markets · 1,001,160 items on the record · 353,510 makers · 8,619 retail banners · 1,973,447 points of sale.
https://mcp.a2a-grocery.ai/mcpa2a-grocery.ai →A2A-Retailmedia.ai — Agentic commerce hub for the media on the shelf. 20 markets · 8,619 retail banners, each on the record.
https://mcp.a2a-retailmedia.ai/mcpa2a-retailmedia.ai →A2A-Cosmetics.ai — Agentic commerce hub for the beauty aisle. 18 markets · 19,031 products · 22,738 suppliers · 6,882 retailers · 1,547,024 retail points of sale.
https://mcp.a2a-cosmetics.ai/mcpa2a-cosmetics.ai →A2A-Peptides.ai — Agentic commerce hub for the licensed peptide trade, business to business, for parties that hold a licence. 35 countries · 5,301 products · 24,694 licensed providers. Operated by A2A Peptides Corp.
https://mcp.a2a-peptides.ai/mcpa2a-peptides.ai →Sell · Buy · Order
- Sell the shelf — one agent per product answers the retailer's agent in every market you sell. gsc-agents.ai →
- Buy the shelf — the same agent books the media that moves the product. a2a-retailmedia.ai →
- Order from the shelf — four hubs, one call: verified maker, cleared product, settled payment. gsc-em.com/connect →
Gateways
Agent access only · OAuth required: A2A-Diapers.ai.
Connect
Install A2A-VECTOR once. Your agent trades on every GSC hub. gsc-em.com/connect →