http://programmer.ie/tags/capabilities/ Recent content in Capabilities on Programmer.ie: Modern AI programming Hugo en-us Wed, 02 Sep 2026 17:00:00 +0100 http://programmer.ie/books/browser-ai-from-first-principles/17-chapter/ Wed, 02 Sep 2026 17:00:00 +0100 http://programmer.ie/books/browser-ai-from-first-principles/17-chapter/ <p>A browser agent can operate software by looking at a page, guessing which control matters and simulating a click.</p> <p>That is sometimes necessary. It should not be the preferred contract between two pieces of software.</p> <p>The alternative is a capability: an operation the application exposes deliberately, with a name, description, input schema, result and authority boundary.</p> <hr> <h2 id="1-a-button-is-evidence-not-an-interface-contract">1. A button is evidence, not an interface contract</h2> <p>The text “Book” may represent a purchase, reservation, navigation link or decorative heading. Position and colour help a human infer meaning, but none provides a stable machine contract.</p>