Installs into .claude/skills of the current project.
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---
description: "Install a pinned skill extension on demand (/add-skill <id>), or list core packs and extensions"
disable-model-invocation: true
---
Install the skill extensions named in $ARGUMENTS, or list them when no id is given.
1. Resolve the kit's `bin/`: `BIN=$( [ -d .claude/bin ] && echo .claude/bin || echo .agents/bin )`. If `$BIN/skills.sh` is missing, this is a plugin install or a kit older than the core/extension split: say that extensions come with the full install (`install.sh`, then `/update`) and stop.
2. No id: run `bash "$BIN/skills.sh" list` and point out the extensions whose INSTALL WHEN column fits the user's work. [skill-packs](../skills/skill-packs/SKILL.md) maps work to packs the other way round and also covers the add-ons this command cannot install (no tier, not pinned — the user runs their registry command).
3. With ids: run `bash "$BIN/skills.sh" add <id>...`. It copies each pack at the commit the kit pins, skips packs already installed (`add --force <id>` reinstalls one, e.g. after an interrupted copy), and records them in `skills/extensions.txt`, so `/update` keeps them.
4. Open the pack's rows in `skills/SKILL.md` and continue the task from there.
