Arc Free Skills
100 systems and hardware engineering skills for requirements, interfaces, budgets and verification.
No outside reports on file
Arc Free Skills is distributed via PyPI (arc-free-skills); review its source code, dependencies, and requested permissions before use.
Based on public adoption and transparency signals as of Oct 23, 2026. Our opinion, not a code audit or security guarantee.
What it can access
- Local filesNo local folder access notedLOW
- Command executionRuns shell or system commandsREVIEW
- Network reachConnects to outside service APINOTED
- CredentialsNo API token requiredLOW
- Package sourcePyPI (arc-free-skills)PUBLIC
Inferred from this listing’s public package details and description. Check the project’s source before installing.
Install
uvx arc-free-skillsEverything known
We found nothing about this project in the sources we read (last checked 2026-10-30). That does not mean it has no problems.
0 incidents · 0 advisories · 0 news articles · 0 community threads · checked 2026-10-30
Popularity grade: D (from public signals such as stars and downloads, not a code review). Graded 2026-10-23.
Sources we read: OSV, GitHub Advisory Database, CISA Known Exploited Vulnerabilities, 44 security news feeds and our incident library. Last checked 2026-10-30.
About Arc Free Skills
Arc Free Skills is an MCP server focused on General: 100 systems and hardware engineering skills for requirements, interfaces, budgets and verification.
It is published on PyPI as arc-free-skills and hosted on GitHub at ArcHelps/systems-engineering-skills (12 GitHub stars, 513 PyPI downloads, last repository push on 2026-10-03). Based on its public metadata, it operates with standard local or API scope without broad shell execution flags noted.
Setup
Check these steps against the project’s own instructions before running anything.
Run the PyPI package arc-free-skills in an isolated environment:
uvx arc-free-skills
See https://github.com/ArcHelps/systems-engineering-skills (opens external site) for required environment variables.
Why this grade
Signal-based grade (1/7 points): public source code. This reflects adoption and transparency, not a code review.
Popularity and upkeep
- GitHub stars
- 12
- PyPI downloads
- 513
- Listing last refreshed
- 2026-10-28
These are public popularity signals, not a maintenance check. Look at the repository’s commit history and open issues.
Risks to watch for
- Dependency & version pinning: Distributed via PyPI (arc-free-skills). Pin an exact release version or commit SHA rather than floating tags so upstream updates are reviewed first.
How to lower the risk
Least-privilege permissions
- Give it access only to the specific folders, accounts or projects it needs, never your whole drive or admin account.
- Use a separate, limited API key or login just for this tool so you can switch it off without affecting anything else.
Network isolation
- Run it on a work computer or sandbox account, not one holding personal or company-sensitive data.
- If your IT team can, limit which websites and services it is allowed to contact.
Monitoring
- Check its activity history or logs weekly at first, and look at what it changed or sent.
- Turn on alerts for new logins or unusual usage on any account it connects to.
Red flags to watch for
- It asks for more access than its job requires, or prompts you to paste passwords.
- It suddenly updates with new owners, or starts contacting unfamiliar websites.
Questions
How do I install Arc Free Skills?
Run uvx arc-free-skills (or pip install arc-free-skills) in your terminal, or add the server entry to your claude_desktop_config.json or .cursor/mcp.json as shown in the Setup section on this page. Full setup docs and environment variables are in github.com/ArcHelps/systems-engineering-skills.
Are there security reports about Arc Free Skills?
No reports found for this package in our research (last checked 2026-10-30). Arc Free Skills currently holds Grade D (High risk signals) based on public adoption and transparency signals. Key risk areas to watch include dependency & version pinning:.
Is Arc Free Skills actively maintained?
Arc Free Skills has 12 GitHub stars and 513 PyPI downloads, with its latest repository commit pushed on 2026-10-03. Our directory data was last refreshed on 2026-10-28. Check recent commit activity, release tags, and open issues at github.com/ArcHelps/systems-engineering-skills before pinning it in production.
What are alternatives to Arc Free Skills?
Compare Arc Free Skills side by side with similar MCP servers in the Related tools section on this page, or browse all MCP servers on AgentArmorHQ.
README badge and team notes
Maintain or use Arc Free Skills? Show its live grade in your GitHub README, docs site, or run a check from the terminal before you install.
GitHub README Markdown:
[](https://agentarmorhq.com/skills/archelps-systems-engineering-skills)HTML embed:
<a href="https://agentarmorhq.com/skills/archelps-systems-engineering-skills"><img src="https://agentarmorhq.com/api/badge/archelps-systems-engineering-skills" alt="AgentArmorHQ Risk Grade for Arc Free Skills" height="20" /></a>Terminal check:
curl -fsSL https://agentarmorhq.com/api/cli | node --input-type=module - check "archelps-systems-engineering-skills"Share with your security lead
Need sign-off to use Arc Free Skills? Copy this note for Slack, a ticket or a pull request.
### AgentArmorHQ Security Review Memo: Arc Free Skills
- **Listing URL:** https://agentarmorhq.com/skills/archelps-systems-engineering-skills
- **Type:** App connector
- **Risk Grade:** Grade D (High risk signals)
- **Outside Security Advisories on File:** 0
- **Public Adoption:** 12 GitHub stars
#### Permission & Blast-Radius Signals
- **Local files:** No local folder access noted
- **Command execution:** Runs shell or system commands
- **Network reach:** Connects to outside service API
- **Credentials:** No API token required
- **Package source:** PyPI (arc-free-skills)
#### Recommended Hardened Setup
- **Command:** `uvx arc-free-skills`
- **Controls:** Pin an exact version in `.mcp.json`, scope access to a single workspace folder, and use a least-privilege read-only token where supported.
_Based on public adoption and transparency signals as of Oct 23, 2026. Our opinion, not a code audit or security guarantee._Key facts
- Type
- App connector
- Publisher
- ArcHelps
- Source code
- github.com/ArcHelps/systems-engineering-skills
- Install command
- pip install arc-free-skills
- Est. context load
- ~550 tokens / turn (~3 tool schemas, 0.27% of 200k context)
- Popularity
- 12 GitHub stars, 513 PyPI downloads
- Last updated
- 2026-10-28
- Last graded
- 2026-10-23
Community
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