WebMCP Has a Chrome Origin Trial. llms.txt Has a Study.
Chrome opened a WebMCP origin trial in Chrome 149 on 9 June 2026. In the same stretch the evidence on llms.txt closed the question. Read them together.
AI
UCP, ACP and AP2: Which One to Build For
Four agentic commerce specifications, doing three different jobs. What UCP, ACP, AP2 and MCP each cover, where each sits, and which one a merchant implements.
Should You Exclude Your Site From Google’s AI Features?
Google’s Search generative AI control reached every site on 31 August 2026. What it governs, what excluding costs, and why most sites should measure first.
Three robots.txt Extensions, None of Them a Standard
Content-Signal, Content-Usage and License are three incompatible robots.txt directives for AI preferences. No RFC exists. What to put in the file today.
Prompt Injection Is an SEO Surface Now
Agents now read your pages and act on them. That makes your comments, reviews and user profiles an input to someone else’s assistant, and a moderation problem.
OAI-AdsBot Is Crawling You for Ad Placement
OpenAI documents four crawlers, and one of them exists to judge ad landing pages. What each does, which ignores robots.txt, and how to verify rather than guess.
You Can Finally Measure AI Search. Sort Of.
Since 31 August 2026 every site gets AI impressions in Search Console: one metric, four dimensions, no clicks, no position. What that supports, and what it cannot.
Running an MCP Server for Your Own Store
MCP is at spec version 2026-07-28, Shopify shipped WebMCP in August and WooCommerce published a reference agent. Whether a small store should build one yet.
Google Is Auto-Enabling Native Checkout on Products
From 22 September 2026 Google began telling merchants their products are eligible for native checkout in AI Mode and Gemini. Inclusion is automatic, not opt-in.
Google-Extended Does Not Do What You Think
Blocking Google-Extended in robots.txt does not remove you from AI Overviews. What the token covers, which fetchers ignore robots.txt, and the control that works.