What problem does it solve? Before editing code, developers need to know what will break. This Skill answers questions like "Is it safe to change this function?" and "What depends on this code?" by tracing upstream dependencies and execution flows through the GitNexus code graph, then assigning a concrete risk level. ## Core Features & Use Cases - Blast Radius Analysis: Uses gitnexus_impact to find direct callers (d=1, WILL BREAK), indirect dependents (d=2), and transitive effects (d=3) for any symbol. - Pre-Commit Change Detection: Maps staged git changes to affected execution flows with gitnexus_detect_changes and reports a LOW/MEDIUM/HIGH/CRITICAL risk level. - Stale Index Guard: Mandates verifying the indexed commit matches HEAD before trusting any output, since a stale graph silently returns misleading "No changes detected" results. - Use Case: Before refactoring validateUser, run the impact workflow to discover that loginHandler and apiMiddleware call it directly and that LoginFlow and TokenRefresh processes are affected, yielding a MEDIUM risk assessment. ## Quick Start Ask the assistant to check what will break if you change a specific function, for example: "What breaks if I modify validateUser?"
