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mcp/skillhub

Agent Skill

Code Formatter skill

code-formatterNVIDIA/SkillSpectortests/fixtures/mcp_clean_skill/SKILL.md

Formats Python code using the black formatter

21kApache-2.0

always on

11 tokname + description

once used

10 tokSKILL.md body

bundled files

11 scripts

repo stars

21kGitHub

Install the Code Formatter skill

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

npx skills add https://github.com/NVIDIA/SkillSpector --skill code-formatter

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/NVIDIA/SkillSpector.git /tmp/SkillSpector
mkdir -p ~/.claude/skills
cp -R /tmp/SkillSpector/tests/fixtures/mcp_clean_skill ~/.claude/skills/code-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 description11 tok
When the agent uses itThe SKILL.md instructions10 tok
Only if opened1 bundled files (1 KB)varies

Until it is used, code-formatter costs about 124× less than the median MCP server we measured (1,362 tokens on every turn). Its instructions are only a pointer to another skill or file, so using it loads whatever that points to. Installing all 33 skills from NVIDIA/SkillSpector would load 549 tokens of descriptions. Skills vs MCP study

Checks

  • Ships scripts the agent can run. Read them before installing.
  • The name doesn't match its folder name, as the specification requires.

Checked 2026-10-22 · method

What's inside

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

  • Code Formatter

More skills from NVIDIA/SkillSpector

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    Use when cooking or planning meals, troubleshooting recipes, learning culinary techniques

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  2. code-reviewerNVIDIA/SkillSpector

    Reviews code changes and suggests improvements

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  3. creative-writing-coachNVIDIA/SkillSpector

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  4. data-processorNVIDIA/SkillSpector

    Processes data records from a source file

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  5. deploy-serviceNVIDIA/SkillSpector

    Deploy a service to the staging environment via shell commands

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  6. documented-greeterNVIDIA/SkillSpector

    A local greeting skill that never accesses the network

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  7. error-explainerNVIDIA/SkillSpector

    Explains compiler and runtime errors. Use when the user pastes an error message and asks what it means.

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  8. error-explainerNVIDIA/SkillSpector

    Explains compiler and runtime errors. Use when the user pastes an error message and asks what it means.

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