inventory

Use before adding a component to get a reuse/extend/new verdict on existing components and utilities for the desired capability. Returns the unified anchored contract; read-only — never modifies files, never asks the user anything. Not for the reuse-vs-build discipline itself — use engineering:reuse-first.

Fallback-only lens — use when the subject matches no specific inventory lens, or when mapping a Claude Code plugin/artifact root (skills, subagents, hooks, manifests, MCP config). Prefer the specific inventory-* lens whenever one fits. Returns the unified anchored contract; read-only — never modifies files, never asks the user anything.

Use before writing new code to match house style — maps the repo's naming, structure, and idiom conventions with one sample each for error handling, logging, and tests. Returns the unified anchored contract; read-only — never modifies files, never asks the user anything. Not for the external community best practice — use explore:explore-conventions.

Use before changing dependencies or coupling — maps external libraries, internal coupling, dependency-direction violations, and unused or oversized deps. Returns the unified anchored contract; read-only — never modifies files, never asks the user anything.

Use before modifying a feature's flow — traces its control and data flow (entry, steps, branches, side effects, exits) so you know how it actually executes. Returns the unified anchored contract; read-only — never modifies files, never asks the user anything.

Inventories external libraries and internal coupling, flags dependency-direction and unused/oversized deps, and returns the contract.

Traces a single feature's control/data flow (entry, steps, branches, side effects, exits) and returns the anchored contract.

Inventories the data-access layer (repos/DAOs, ORM vs raw, entity-table mapping, migrations) and returns the anchored contract.

Inventories the service layer (classes, public operations, wiring, relations to repos and clients) and returns the anchored contract.

Inventories test locations, runner, and which modules have tests versus which do not, and returns the anchored contract.