What problem does it solve? Authors of third-party gbrain skillpacks need to know exactly what artifacts a pack must ship and how the doctor scores it before publishing. This skill answers "what is a skillpack" questions by describing the required files, the ten scoring dimensions, and the tier eligibility rules. ## Core Features & Use Cases - Contract Reference: Documents the four artifacts every pack ships: skillpack.json, SKILL.md with frontmatter and triggers, runbooks/bootstrap.md, and CHANGELOG.md. - Doctor Scoring Explained: Breaks down the 10 binary dimensions split into 5 core gates (manifest_valid, skills_have_skill_md, routing_evals_present, skills_have_unique_triggers, changelog_present_and_current) and 5 quality badges. - Tier Eligibility Guidance: Clarifies endorsed, community, experimental, and blocked tiers plus the doctor and pack commands publishers run before submitting. - Use Case: A developer asks their agent "how do third-party skillpacks work" and receives a grounded explanation of the manifest, routing evals, and publish checklist, plus pointers to gbrain skillpack doctor for live scoring. ## Quick Start Ask your agent what a gbrain skillpack is and how the doctor scores it.