Backlog Refinement Expert Overview Refinement is the most under-invested ritual in agile teams. Stories arrive at sprint planning oversized, ambiguous, or strategically disconnected, and the team spends planning meetings doing what should have happened the week before. This skill is the refinement playbook: how to grade stories against INVEST, how to split stories vertically (so each slice ships value end-to-end), and how to keep a working Definition of Ready and Definition of Done that prevent half-baked work from entering or leaving a sprint. The skill includes a Python scorer ( ) that grad…