What problem does it solve? Scripted test cases cannot answer "what do we not know about this yet" when requirements are moving, regression suites pass while users report problems, or a release needs a risk sweep with no time to write cases. This Skill structures exploratory testing so it produces accountable, reviewable coverage instead of unscripted clicking. ## Core Features & Use Cases - Charter Writing and Prioritization: Creates mission-style charters (target, resources, discovery goal) and sorts them into must-run, run-if-time, and backlog buckets based on risk signals. - Heuristic-Guided Sessions: Applies SFDIPOT, CRUSSPIC STMPL, tours, and input/state/data heuristics during strictly timeboxed 45/60/90-minute sessions with evidence-capturing notes. - Debrief and Output Routing: Runs PROOF debriefs and routes findings to bug reports, automation candidates, requirement questions, or follow-up charters, then aggregates a coverage report for release decisions. - Use Case: A payment flow changed before release and scripted tests all pass. Use this Skill to write risk-prioritized charters, run timeboxed sessions with named heuristics, capture evidence-backed notes, and deliver a coverage report stating what was and was not tested. ## Quick Start Plan and run a 60-minute exploratory testing session on the checkout payment flow, focusing on the risk that saved cards behave incorrectly after a settings change.