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Skill Hub
by
PhenixStar
· GitHub ↗
· v1.0.0
1418
Downloads
0
Stars
6
Active Installs
1
Versions
Install in OpenClaw
/install skill-hub
Description
OpenClaw skill discovery, security vetting & install. Searches 3000+ curated skills from ClawHub registry and awesome-openclaw-skills catalog. Scores credibility, detects prompt injection & malicious patterns, manages installations. Quick-checks GitHub for new skills.
Usage Guidance
What to consider before installing Skill Hub:
- Dependency check: The package calls external CLIs ('gh' GitHub CLI and 'npx' to run clawhub). The metadata incorrectly lists no required binaries — ensure you have and trust these CLIs before running the skill.
- Remote code execution: The skill uses 'npx clawhub@latest' and fetches raw README from GitHub. npx@latest will download and execute packages from npm each time; consider pinning versions or auditing clawhub behavior before allowing installs.
- Prompt-injection token: A prompt-injection phrase was detected in SKILL.md. Confirm whether it appears only as an example for detection, not as an instruction the agent should follow. If you plan to let the agent invoke this skill autonomously, be cautious about ambiguous frontmatter or instructions that could influence model behavior.
- File writes & workspace: The skill reads/writes a catalog at references/awesome-catalog.json (inside the skill bundle) and uses ~/.openclaw/workspace for invoking ClawHub. Ensure you are comfortable with those write locations and back them up if necessary.
- Run in a sandbox first: If possible, run the scripts in a restricted environment or container to observe network calls and subprocesses (gh, npx) before enabling in a production agent.
- Audit third-party behavior: Inspect/verify what 'clawhub' and the GitHub repo (VoltAgent/awesome-openclaw-skills) contain. Because this skill downloads and inspects other skills, its trust boundary extends to the external repos it contacts.
Recommended next steps:
1) Review the code paths that call subprocess (search, quick-check, vet) to confirm they don't pass untrusted input into shell=True calls (the provided scripts appear to use list-argument subprocess.run without shell=True). 2) Confirm or add required-binaries metadata for gh and npx. 3) Consider pinning npm packages (avoid '@latest') and avoiding automatic remote execution unless you trust the sources. 4) If you allow this skill, run its vet function on itself and run quick-check/sync in a controlled environment first.
Given these mismatches and the prompt-injection signal, exercise caution; the skill is plausible for its stated purpose but has implementation details and runtime behaviors that warrant review before granting it access to your agent.
Capability Analysis
Type: OpenClaw Skill
Name: skill-hub
Version: 1.0.0
The skill is classified as benign. Its core purpose is skill discovery, security vetting, and installation, which inherently requires broad permissions like Bash, Read, and Write, and the use of subprocess calls to `gh` (GitHub CLI) and `npx clawhub` (OpenClaw registry CLI). The `skill-hub-security-patterns.py` file explicitly defines patterns for detecting malicious activities, indicating a security-conscious design. All external network calls are to expected and legitimate sources (e.g., `raw.githubusercontent.com` for the awesome list). There is no evidence of intentional harmful behavior such as credential theft, data exfiltration to arbitrary endpoints, persistence mechanisms, or prompt injection attempts against the agent.
Capability Assessment
Purpose & Capability
The code and SKILL.md align with the stated purpose (searching a curated catalog, vetting skills, syncing from GitHub, and invoking ClawHub for installs). However the registry metadata claims 'required binaries: none' while the runtime scripts call external CLIs (gh and npx/clawhub) and expect a Python runtime. This is an incoherence: the skill realistically requires 'gh' and 'npx' (and network access).
Instruction Scope
SKILL.md and the scripts constrain actions to discovery, vetting, exporting, and syncing. The instructions run local scripts, call out to GitHub (raw README), and use npx to list/inspect/install skills. They do read/write catalog files under the skill bundle and use a workspace under the user's home (~/.openclaw). They do not instruct the agent to read arbitrary user files or environment variables beyond normal workspace/catalog paths.
Install Mechanism
There is no formal install spec (the package is instruction+code only). The code performs network fetches (raw.githubusercontent.com) and invokes 'npx clawhub@latest' which will download and execute npm code at runtime—this is a moderate risk vector because it results in executing remote code from npm each time. Using the GitHub raw URL is a standard release source, but the combination of npx@latest plus unpinned remote fetches increases runtime trust requirements. The metadata should declare these runtime dependencies.
Credentials
The skill declares no required env vars or credentials (which is appropriate). But it accesses filesystem locations (Path.home()/.openclaw/workspace and writes references/awesome-catalog.json inside the skill directory) and relies on external CLIs. The lack of declared required binaries (gh, npx) is a proportionality mismatch. There are no explicit requests for unrelated secrets, but the skill will invoke npx/clawhub which may in turn access user's environment or prompt for credentials (e.g., npm auth, gh auth) — that impact is not documented.
Persistence & Privilege
always:false and disable-model-invocation:false (normal). The skill writes and updates its own catalog file and may write temporary inspection outputs to temp dirs or the user's workspace; it does not request to modify other skills' configurations or set system-wide persistence. No force-inclusion privilege is requested.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install skill-hub - After installation, invoke the skill by name or use
/skill-hub - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release
Metadata
Frequently Asked Questions
What is Skill Hub?
OpenClaw skill discovery, security vetting & install. Searches 3000+ curated skills from ClawHub registry and awesome-openclaw-skills catalog. Scores credibility, detects prompt injection & malicious patterns, manages installations. Quick-checks GitHub for new skills. It is an AI Agent Skill for Claude Code / OpenClaw, with 1418 downloads so far.
How do I install Skill Hub?
Run "/install skill-hub" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Skill Hub free?
Yes, Skill Hub is completely free (open-source). You can download, install and use it at no cost.
Which platforms does Skill Hub support?
Skill Hub is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Skill Hub?
It is built and maintained by PhenixStar (@phenixstar); the current version is v1.0.0.
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