Author and maintain Compass catalog-info.yaml manifests for agentic packs (skills, plugins, Locations, MCP inverse relations). Use when: - Adding or updating a skill and its Compass manifest - Registering an existing pack in Compass (manifests only; not creating a new agentic pack) - MCP usage or orchestration changed in SKILL.md - Auditing bidirectional dependsOn/dependencyOf drift against repo Compass conventions File-based only: Read/Glob/Grep/Bash. For `.catalog/` marketplace metadata use create-collection. NOT for: `.catalog/` metadata (use create-collection) or automated Compass registration.