Escribe una PREreview

AI agents now read the web, quote it and remember it, and they increasingly write back into shared knowledge bases. Almost none of that knowledge is published in a form an agent can check, cite by a stable unit, or change under a person's control. AgenticSystemCore answers this with a file format and a few fixed outputs, not with a service. It is an open specification with two implementations and two public nodes. Knowledge is written as ordinary Markdown files. A deterministic build turns them into a website, a typed graph with a published ontology, citable text units, agent-facing files, and one discovery document with a digest on every link. The files change only by proposals that a person ratifies. Nodes built this way can name each other, be read as one memory by agents, be composed into the starting files of a software system, and be worked on by people and agents together on a live board. This paper explains the whole of it in plain language. It covers the problem; the idea of a web of knowledge nodes; what "understanding" means for an agent and for a person who share such a node; the web standards it stands on and what it adds; what was actually built and published between August and October 2026 (specification 1.0.0, engine and checker 1.0.1, the nodes, the site and its documentation); how it is checked; what is new compared with related work; and what version 1.1 is planned to add. It is written for anyone who wants to understand the system before reading the technical specification or its measurements.