# News of the Week #16: The Weekly Brief on Agentic Commerce

> The week the payment networks built the agentic rails: Visa put its credentials inside ChatGPT through an OpenAI collaboration, Mastercard launched Agent Pay for Machines hours later, and Pine Labs shipped P3P, India's first agentic payment protocol on UPI. Checkout.com's data showed demand forming fast while trust lags, ShopAgentic raised EUR 1.9M for an agent-native store, fresh GEO research found ChatGPT and Perplexity cite almost entirely different webs, and Amazon v. Perplexity reached Ninth Circuit oral arguments over whether a user's shopping agent counts as the user under the CFAA.

**Published:** 2026-06-16  
**Category:** News  
**Coverage window:** 8 to 15 June 2026  
**URL:** https://www.tryrankly.com/blogs/agentic-commerce-weekly-16  

## In this article

1. Visa partners with OpenAI to put its rails inside ChatGPT
2. Mastercard launches Agent Pay for Machines, hours later
3. Visa's Agent Score, Agentic Directory, and a $7B stablecoin run-rate
4. Pine Labs launches P3P, India's first agentic payment protocol on UPI
5. Checkout.com: demand is forming fast, trust is still catching up
6. ShopAgentic raises EUR 1.9M to build an agent-native store
7. GEO data: ChatGPT and Perplexity cite almost different webs
8. Amazon v. Perplexity reaches Ninth Circuit oral arguments

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Read the full article with all source citations at [https://www.tryrankly.com/blogs/agentic-commerce-weekly-16](https://www.tryrankly.com/blogs/agentic-commerce-weekly-16).

**Keywords:** agentic commerce, Visa Intelligent Commerce, OpenAI, ChatGPT, Mastercard Agent Pay for Machines, AP4M, HTTP 402, stablecoins, Pine Labs P3P, UPI, Grantex, Checkout.com, ShopAgentic, GEO, generative engine optimization, Perplexity, Amazon v. Perplexity, CFAA, Agent Score, WebMCP, Rankly