Teaching Coding Agent to Write XSLT — The Hook in Action

Parts 1 and 2 explained the skill and the hook setup. This part shows it actually running - a real session, real prompts, real hook output. No theory. We'll build the same Order-to-Shipment transformation three ways - XSLT 1.0 with inline C#, XSLT 2.0 with Saxon, and LML compiled to XSLT 3.0 - and watch the hook verify each one, catch bugs, and drive Claude through a multi-step fix cycle. Everything below is from a single session. Step 1: XSLT 1.0 with inline C The prompt Create an XSLT 1.0 transformation (compatible with. NET XslCompiledTransform) that maps an Order to a Shipment.