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Agent skill

Clawhub

by HKUDS in HKUDS/OpenOPC

Search and install agent skills from ClawHub, the public skill registry.

MITAuto-check passedAgent Workflows

Install Clawhub

skills CLI
$ npx skills add HKUDS/OpenOPC --skill clawhub -a claude-code

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

GitHub CLI
$ gh skill install HKUDS/OpenOPC clawhub --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/HKUDS/OpenOPC.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.opc/skills/clawhub .claude/skills/clawhub && 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
clawhub
GitHub stars
1.8k
Token cost
~467 tokens
SKILL.md length
181 words
Files
1
Skills in repo
7
Repo updated
First seen
Licence
MIT

At a glance

Search and install agent skills from ClawHub, the public skill registry.

  • Works in 5 steps: Search for relevant skills with a… → Review search results and pick the best… → Install the skill into the project… → …
  • Needing new capabilities
  • SKILL.md covers When to use, Search, Install and Update, plus 3 more sections
  • Calls npx

What it does

Clawhub is an agent skill from HKUDS/OpenOPC. Search and install agent skills from ClawHub, the public skill registry. Use when needing new capabilities, searching for skills, installing skills, or updating installed skills.

Its SKILL.md is about 470 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering Skill management. The repository describes itself as: OpenOPC: Build Your Personal AI-Native Company — Self-Built, Self-Run, Self-Grown. The licence is MIT.

When your agent uses it

  • Needing new capabilities
  • Searching for skills
  • Installing skills
  • Updating installed skills

Example prompts

  • “/clawhub”

Requirements

  • Node.js

Workflow steps

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

  1. Search for relevant skills with a descriptive query
  2. Review search results and pick the best match
  3. Install the skill into the project directory
  4. Read the installed SKILL.md with file_read
  5. Follow the skill's instructions for the current task

What it can do on your machine

Read from SKILL.md and the folder at commit b14e85d. 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

    Shell commands in SKILL.md call:

    • npx

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

  • Network

    No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.

    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

Clawhub loads about 467 tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 181 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~47
When it runs · the whole SKILL.md, loaded when a task matches
~467

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); files beside SKILL.md are not scanned.

SKILL.md

The full file from HKUDS/OpenOPC at commit b14e85d, republished under its MIT licence (© HKUDS). 181 words, ~467 tokens.

Download SKILL.mdSave it as .claude/skills/clawhub/SKILL.md (or your agent's skills folder).
name
clawhub
description
Search and install agent skills from ClawHub, the public skill registry. Use when needing new capabilities, searching for skills, installing skills, or updating installed skills.
always
true
homepage
https://clawhub.ai

ClawHub

Public skill registry for AI agents. Search by natural language (vector search).

When to use

  • You encounter an unfamiliar domain or technology and need guidance
  • The user asks to find, search, install, or update skills
  • You need specialized knowledge that existing skills don't cover
  • A task requires capabilities beyond your current skill set
bash
npx --yes clawhub@latest search "web scraping" --limit 5

Install

Install skills into the current project's skill directory:

bash
npx --yes clawhub@latest install <slug> --workdir .opc/projects/<project_id>

Replace <slug> with the skill name from search results and <project_id> with the current project ID. This places the skill into .opc/projects/<project_id>/skills/<slug>/SKILL.md.

After install, read the installed SKILL.md with file_read to apply its guidance immediately.

Update

bash
npx --yes clawhub@latest update --all --workdir .opc/projects/<project_id>

List installed

bash
npx --yes clawhub@latest list --workdir .opc/projects/<project_id>

Workflow

  1. Search for relevant skills with a descriptive query
  2. Review search results and pick the best match
  3. Install the skill into the project directory
  4. Read the installed SKILL.md with file_read
  5. Follow the skill's instructions for the current task

Notes

  • Requires Node.js (npx comes with it).
  • No API key needed for search and install.
  • Login (npx --yes clawhub@latest login) is only required for publishing.
  • --workdir must point to the project directory so skills install correctly.

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

Files

Just SKILL.md in .opc/skills/clawhub of HKUDS/OpenOPC.

Open the folder on GitHubat commit b14e85d

Compare with similar skills

Clawhub 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.

Clawhub compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Clawhub this skillHKUDS/OpenOPC1.8k—~467Automated safety check: PassMIT
Darwin Skill Optimizeralchaincyf/darwin-skill6.2k1 repos~4.7kAutomated safety check: PassMIT
Using Agent Skillsaddyosmani/agent-skills103k4 repos~2.4kAutomated safety check: PassMIT
Ponytail Help CardDietrichGebert/ponytail159k—~726Automated safety check: PassMIT
Skill Creatorzhayujie/CowAgent47k—~4.7kAutomated safety check: NotesMIT
Task Observerrebelytics/one-skill-to-rule-them-all3.2k1 repos~12kAutomated safety check: PassCC-BY-4.0

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  • Cron

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  • Memory

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Categories

Questions about Clawhub

What does Clawhub do?

Search and install agent skills from ClawHub, the public skill registry. Clawhub is an agent skill from HKUDS/OpenOPC. Search and install agent skills from ClawHub, the public skill registry.

When should I use Clawhub?

Clawhub fits situations like: needing new capabilities; searching for skills; installing skills; updating installed skills.

How do I install Clawhub in Claude Code?

Run `npx skills add HKUDS/OpenOPC --skill clawhub -a claude-code`. Or copy the skill folder (.opc/skills/clawhub in HKUDS/OpenOPC) into .claude/skills/clawhub in your project. Claude Code loads it when a task matches its description.

How do I install Clawhub in Codex?

Run `npx skills add HKUDS/OpenOPC --skill clawhub -a codex`. Or copy the skill folder (.opc/skills/clawhub in HKUDS/OpenOPC) into .agents/skills/clawhub in your project. Codex loads it when a task matches its description.

Can I use Clawhub 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 HKUDS/OpenOPC --skill clawhub -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/clawhub, .gemini/skills/clawhub, .github/skills/clawhub and .opencode/skills/clawhub in your project.

What does Clawhub need to run?

Going by SKILL.md and its folder, Clawhub needs the command-line tools its instructions call (npx). Our summary lists: Node.js.

Does Clawhub access the network?

SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Clawhub 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. Review the folder before installing.

What licence does Clawhub use?

Clawhub 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 Clawhub use?

About 467 tokens (SKILL.md is roughly 1.9k 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 Clawhub?

Skills that share tags, products or a category with Clawhub: Darwin Skill Optimizer (alchaincyf/darwin-skill, 6.2k stars), Using Agent Skills (addyosmani/agent-skills, 103k stars), Ponytail Help Card (DietrichGebert/ponytail, 159k stars) and Skill Creator (zhayujie/CowAgent, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Clawhub?

HKUDS (a GitHub organization) maintains it in HKUDS/OpenOPC, which has 1,819 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on September 11, 2026.

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