Do not treat the hub or a companion as the working tool.

The hub lists packs. A companion page is Setup: copy or download. Neither draws a wireframe, runs an audit, or screenshots breakpoints. For those jobs, open the matching browser tool or let the installed skill run in your agent.

Do not install-once and download the same skill as a second workflow.

Run npx skills@latest add iruhdam1/skills or download one pack from the companion — not both for the same skill. Two copies drift; the agent may load the stale one.

Do not write first-person or vague descriptions.

Claude and other hosts discover skills from the description field. First-person (“I help you…”) or empty scope means the agent never picks the file. Write what it does and when to use it, in the third person. Anthropic’s authoring notes cover the same rule.

Do not stuff SKILL.md with everything.

Keep the body a procedure. Put long notes one level deep in a sibling reference file so hosts can load them only when needed. A wall of text burns context and hides the trigger.

Do not copy shop .agents/skills or edit Analog.

This shop’s .agents/skills folder (COSS, Phosphor, and other agent helpers) is not the public pack. Do not copy it. Do not edit Analog. The public set is the GitHub pack listed on the hub.

Do not chase a missing skills.sh listing.

skills.sh is a public listing plus install telemetry. A missing badge is not a failed GitHub push. Use GitHub or the shop companion if a pack is not listed yet. See skills.sh vs GitHub.