Agent skill

Skill Downloader

by nicepkg in nicepkg/ai-workflow

Download and install Claude Code skills from various sources.

MITAuto-check passedAgent Workflows

Install Skill Downloader

skills CLI
$ npx skills add nicepkg/ai-workflow --skill skill-downloader -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install nicepkg/ai-workflow skill-downloader --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/nicepkg/ai-workflow.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/skill-downloader .claude/skills/skill-downloader && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
skill-downloader
GitHub stars
285
Token cost
~1.1k tokens
SKILL.md length
185 words
Files
4 (incl. scripts)
Skills in repo
75
Repo updated
First seen
Licence
MIT

At a glance

Download and install Claude Code skills from various sources.

  • Works in 3 steps: Skill folder contains SKILL.md → SKILL.md has valid YAML frontmatter with… → No malicious content patterns detected
  • User wants to download
  • SKILL.md covers Supported Sources, Usage, Validation and Output Structure, plus 3 more sections
  • Runs Python scripts from its folder; calls python; reaches github.com and skillhub.club

What it does

Skill Downloader is an agent skill from nicepkg/ai-workflow. Download and install Claude Code skills from various sources. Supports GitHub repositories, compressed archives (.zip, .tar.gz, .skill), and direct URLs. Use when user wants to download, install, or add a skill from GitHub, URL, or archive file. Triggers on "download skill", "install skill", "add skill from", "get skill".

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including scripts (for example `scripts/download_from_archive.py`, `scripts/download_from_github.py` and `scripts/download_skill.py`).

It sits in Agent Workflows, covering Skill management. It works with GitHub. The repository describes itself as: 🚀 170+ pre-built skills for Claude Code, Cursor, Codex & 14+ AI tools. Stop re-teaching your AI the same things. One command → instant domain expertise. Marketing, SEO, Trading… The licence is MIT.

When your agent uses it

  • User wants to download
  • Add a skill from GitHub

Example prompts

  • “download skill”
  • “install skill”
  • “add skill from”
  • “/skill-downloader”

Requirements

  • Python 3

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Skill folder contains SKILL.md
  2. SKILL.md has valid YAML frontmatter with name and description
  3. No malicious content patterns detected

What it can do on your machine

Read from SKILL.md and the folder at commit d167b41. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 3 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • github.com
    • skillhub.club

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Skill Downloader loads about 1.1k tokens when it runs. Until then it costs about 85 tokens; SKILL.md has 185 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~85
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from nicepkg/ai-workflow at commit d167b41, republished under its MIT licence (© nicepkg). 185 words, ~1,052 tokens.

Download SKILL.mdSave it as .claude/skills/skill-downloader/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
skill-downloader
description
Download and install Claude Code skills from various sources. Supports GitHub repositories, compressed archives (.zip, .tar.gz, .skill), and direct URLs. Use when user wants to download, install, or add a skill from GitHub, URL, or archive file. Triggers on "download skill", "install skill", "add skill from", "get skill".

Skill Downloader

Download and install Claude Code skills from multiple sources.

Supported Sources

Source TypeExamples
GitHub Repositoryhttps://github.com/user/repo, github.com/user/repo
Compressed Archive.zip, .tar.gz, .tgz, .skill (renamed zip)
Direct URLURL pointing to archive or skill folder

Usage

Download from GitHub
bash
python scripts/download_from_github.py <repo-url> <skill-path> --output <target-dir>

Examples:

bash
# Official Anthropic skills
python scripts/download_from_github.py https://github.com/anthropics/skills skills/docx --output ./.claude/skills/

# Community skills (root level)
python scripts/download_from_github.py https://github.com/gked2121/claude-skills social-repurposer --output ./.claude/skills/

# Nested skill path
python scripts/download_from_github.py https://github.com/MadAppGang/claude-code skills/content-brief --output ./.claude/skills/
Download from Archive
bash
python scripts/download_from_archive.py <url-or-path> --output <target-dir>

Examples:

bash
# From URL
python scripts/download_from_archive.py https://example.com/skills/my-skill.zip --output ./.claude/skills/

# From local file
python scripts/download_from_archive.py ./downloads/my-skill.tar.gz --output ./.claude/skills/

# .skill files (renamed zip)
python scripts/download_from_archive.py https://skillhub.club/download/awesome-skill.skill --output ./.claude/skills/
Unified Download Command
bash
python scripts/download_skill.py <source> --output <target-dir>

Automatically detects source type:

  • GitHub URL → Uses git sparse checkout
  • Archive URL/path → Downloads and extracts
  • Directory path → Copies directly

Examples:

bash
# Auto-detect GitHub
python scripts/download_skill.py https://github.com/anthropics/skills/tree/main/skills/docx --output ./.claude/skills/

# Auto-detect archive
python scripts/download_skill.py https://example.com/my-skill.zip --output ./.claude/skills/

Validation

All download methods validate:

  1. Skill folder contains SKILL.md
  2. SKILL.md has valid YAML frontmatter with name and description
  3. No malicious content patterns detected

Output Structure

Downloaded skills are placed in:

<output-dir>/
└── <skill-name>/
    ├── SKILL.md        # Required
    ├── scripts/        # Optional
    └── ...

Error Handling

ErrorCauseSolution
Skill already existsTarget directory existsUse --force to overwrite
SKILL.md not foundInvalid skill packageVerify source contains SKILL.md
Invalid archiveCorrupted or unsupported formatCheck file integrity
Network errorDownload failedRetry or check URL

Integration with Workflow Creator

When used with workflow-creator, download skills to workflow's .claude/skills/ directory:

bash
# Create workflow first
python /path/to/workflow-creator/scripts/create_workflow.py my-workflow --path ./workflows

# Then download skills
python scripts/download_skill.py https://github.com/anthropics/skills/tree/main/skills/docx --output ./workflows/my-workflow/.claude/skills/

Skill Sources Reference

Popular skill repositories:

© nicepkg, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (scripts) in .claude/skills/skill-downloader of nicepkg/ai-workflow.

  • SKILL.md
  • scripts/download_from_archive.py
  • scripts/download_from_github.py
  • scripts/download_skill.py

Open the folder on GitHubat commit d167b41

Compare with similar skills

Skill Downloader next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Skill Downloader compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Downloader this skillnicepkg/ai-workflow285—~1.1kAutomated safety check: PassMIT
TeamAI Setup and LifecycleTencent/teamai-cli5.2k—~1.2kAutomated safety check: PassCustom licence
Dotagentsgetsentry/sentry-wizard295—~900Automated safety check: PassCustom licence
Skill Minerhqhq1025/skill-optimizer181—~719Automated safety check: PassMIT
Skill Base CLIginuim/skill-base120—~1.9kAutomated safety check: PassNone
Octocode Skills Managerbgauryy/octocode949—~1.2kAutomated safety check: PassMIT

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Works with

Questions about Skill Downloader

What does Skill Downloader do?

Download and install Claude Code skills from various sources. Skill Downloader is an agent skill from nicepkg/ai-workflow. Download and install Claude Code skills from various sources.

When should I use Skill Downloader?

Skill Downloader fits situations like: user wants to download; add a skill from GitHub.

How do I install Skill Downloader in Claude Code?

Run `npx skills add nicepkg/ai-workflow --skill skill-downloader -a claude-code`. Or copy the skill folder (.claude/skills/skill-downloader in nicepkg/ai-workflow) into .claude/skills/skill-downloader in your project. Claude Code loads it when a task matches its description.

How do I install Skill Downloader in Codex?

Run `npx skills add nicepkg/ai-workflow --skill skill-downloader -a codex`. Or copy the skill folder (.claude/skills/skill-downloader in nicepkg/ai-workflow) into .agents/skills/skill-downloader in your project. Codex loads it when a task matches its description.

Can I use Skill Downloader in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nicepkg/ai-workflow --skill skill-downloader -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-downloader, .gemini/skills/skill-downloader, .github/skills/skill-downloader and .opencode/skills/skill-downloader in your project.

What does Skill Downloader need to run?

Going by SKILL.md and its folder, Skill Downloader needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.

Does Skill Downloader access the network?

SKILL.md names 2 domains. In commands or code: github.com and skillhub.club; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.

Is Skill Downloader safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Skill Downloader use?

Skill Downloader is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Skill Downloader use?

About 1.1k tokens (SKILL.md is roughly 4.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Skill Downloader?

Skills that share tags, products or a category with Skill Downloader: TeamAI Setup and Lifecycle (Tencent/teamai-cli, 5.2k stars), Dotagents (getsentry/sentry-wizard, 295 stars), Skill Miner (hqhq1025/skill-optimizer, 181 stars) and Skill Base CLI (ginuim/skill-base, 120 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Skill Downloader?

nicepkg (a GitHub organization) maintains it in nicepkg/ai-workflow, which has 285 GitHub stars. The repository holds 75 skills in this directory. The repository was last updated on January 20, 2026.

Source: nicepkg/ai-workflow on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.