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shell-builtins

An AI agent skill from charmbracelet/crush, scored 58 out of 100 by code.

58/ 100C

Code score by group

  • Spec20/20
  • Description7/20
  • Procedure7/15
  • Done criteria0/15
  • Resources10/10
  • Scripts5/8
  • Safety7/7
  • Upkeep2/5

It loses the most points in Done criteria (15), the group that checks whether there is a checklist and a step that verifies the work.

What the author says it does

Use when creating a new shell builtin command for Crush (internal/shell/), editing an existing one, or when the user needs to understand how commands are intercepted in Crush's embedded shell.

This is the description in the skill's own SKILL.md, written by its author, not by SkillCheatSheet.

Repository
charmbracelet/crush
Folder
.agents/skills/shell-builtins
License
Not identified by GitHub
GitHub stars
29,057
SKILL.md lines
73
Other files
0

Add shell-builtins to your agent

npx skills add charmbracelet/crush --skill shell-builtins

The command uses the open skills CLI. A skill is instructions and scripts your agent will follow, so read it first: open the folder on GitHub at the commit that was scored. GitHub identifies no license for this repository, so check its terms before you use it.

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All skills in charmbracelet/crush

Scores come from a snapshot of 300 public GitHub repositories taken on 12 November 2026. Every score is the result of fixed checks run by code; no AI is involved. How scoring works.