What problem does it solve? When you need to port, hand off, or rebuild a system without the original repo, manually documenting every behavior, data model, and integration is slow and error-prone. This Skill orchestrates a coverage-gated, multi-agent investigation that produces a single standalone Markdown specification an independent team could implement from scratch. ## Core Features & Use Cases - Scoped extraction: Run against the full system, a single functional wing, or a targeted slice (e.g. auth and billing flows), with a Phase 0 cost estimate and budget gate before any heavy work begins. - Six-phase method: Complete inventory, per-wing dossiers, cross-cutting investigations (flows, data lineage, interfaces, security, UI), whole-system reconciliation, spec authoring, and an adversarial review panel covering coverage, reconstruction, flexibility, privacy, and consistency. - Hard anonymization: The deliverable contains no PII, secrets, paths, symbols, or project identity, making it suitable for vendor-neutral handoff, due diligence, escrow, or disaster-recovery documentation. - Use Case: You are re-platforming a legacy proprietary system to a new stack. Run the skill at full-system scope to produce an anonymized rebuild blueprint with acceptance criteria, data semantics, and known unknowns that a fresh team can implement without repo access. ## Quick Start Ask the agent to run the extract-system-spec skill on this repository at full-system scope with a token budget, then confirm the Phase 0 cost estimate to begin the extraction.
