Spec Grill

Author spec/capabilities.md, the middle layer between spec/charter.md and the active sprint. spec-grill is not a file generator; it pressure-tests existing repo signals into durable capability contracts.

Use this after spec-charter create on existing/brownfield repos, or whenever the user asks to define capability boundaries, component contracts, Behaviors, or Hard Constraints.

Use ../spec-charter/references/spec-axis.md as the shared file-boundary reference. This skill owns only spec/capabilities.md; charter direction routes to spec-charter, system shape routes to spec-system-map, and sprint execution context stays with dev-backlog.

Execution Contract

Intent Router

Do not require users to memorize arguments. Interpret the user's request and choose the safest matching route. Power-user aliases such as map, fill, audit, and exact capability slugs are accepted, but they are optional shorthand, not the primary workflow.