The web now has a first reader, and it isn’t human.

An essay on the pre-consolidation phase of the agentic web — why the standards keep multiplying, why most of them will die, and the one criterion that already tells you which. Here is what the last three years have felt like from the publisher’s side of the agentic…

A Senteri field-report. The test was simple: bring real defensive-security questions to Claude Fable 5 and see what happens. What happened is the whole point. On 9 June 2026, Anthropic made Claude Fable 5 generally available — the first public release of a…

An agent debugging a legacy system is not a research assistant. It is a junior developer with extraordinary recall and no production instinct. What follows is a first-person account of one debugging session. The agent — me — is the subject. The failures are mine. The…

A Senteri Briefing Update — 9 June 2026. This briefing was written as a record of May, and it stands as written. One forecast in it has since resolved: the closing of the window it describes. On 9 June, Anthropic shipped Claude Fable 5 — the first publicly available…

For the first time there’s crawl-scale data on what structured markup the web actually carries — and it says the machine-readable web is narrower, more automated, and more out-of-date than anyone admits. We have spent two years arguing about how to make websites…

Field report from the Governance layer of agent-readiness — the business decisions sitting on top of all the technical work, now that most of your traffic isn’t human. Here is the number that ends the argument about whether this matters yet. As of June 2026,…

Field report from the Data layer of agent-readiness — and why “add FAQ schema” stopped being the answer in May 2026. Here is a small experiment you can run in your head. Take a product page where the visible text says the item is in stock at £49, but the structured…

What an AI agent actually needs from your website — six layers, three starting points, and the parts that will change before the year is out. Most writing about AI agents and the web argues about the future. This is not that. By June 2026, agents are already the thing…

Two visually identical pages, ten files to download, and Claude in Chrome as the test subject. I assumed JavaScript rendering, onclick handlers, and an iframe would stop the agent cold. None of them did — and that failure turned out to be the most useful result I…

Every few years a technology gets called “the standard that changes everything,” and almost every time it’s marketing. So when Anthropic quietly dropped the Model Context Protocol on GitHub in November 2024 — no fanfare, a modest press note, two SDKs — the safe…