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Agent Skill

Simple Formatter skill

simple-formattercisco-ai-defense/skill-scannerevals/test_skills/safe/simple-formatter/SKILL.md

Formats text according to specified style guidelines. A clean example skill with no security issues.

2.6kMIT

always on

21 tokname + description

once used

94 tokSKILL.md body

bundled files

21 scripts

repo stars

2.6kGitHub

Install the Simple Formatter skill

Skills CLI (Claude Code, Codex, Cursor and others)

npx skills add https://github.com/cisco-ai-defense/skill-scanner --skill simple-formatter

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/cisco-ai-defense/skill-scanner.git /tmp/skill-scanner
mkdir -p ~/.claude/skills
cp -R /tmp/skill-scanner/evals/test_skills/safe/simple-formatter ~/.claude/skills/simple-formatter

For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.

What it costs your context

Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.

WhenWhat loadsCost
Every sessionName and description21 tok
When the agent uses itThe SKILL.md instructions94 tok
Only if opened2 bundled files (2 KB)varies

Until it is used, simple-formatter costs about 65× less than the median MCP server we measured (1,363 tokens on every turn). Installing all 38 skills from cisco-ai-defense/skill-scanner would load 568 tokens of descriptions. Skills vs MCP study

Checks

  • Ships scripts the agent can run. Read them before installing.

Pre-approved tools (allowed-tools): Python. The agent can use these without asking while the skill is active.

Checked 2026-10-22 · method

What's inside

The headings of its SKILL.md. Read the full file on GitHub.

  • Simple Text Formatter
  • Features
  • Usage
  • Example

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