# Arc Free Skills (pypi · arc-free-skills)

100 systems and hardware engineering skills for requirements, interfaces, budgets and verification.

- Trust score: 39/100 (low)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- pypi · `arc-free-skills`: 39/100 (this document), [markdown](https://verifymcp.io/servers/archelps-arc-free-skills/arc-free-skills.md), [page](https://verifymcp.io/servers/archelps-arc-free-skills/arc-free-skills)

## Channel facts

- Registry: `pypi`
- Package: `arc-free-skills`
- Version: `1.0.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 99/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised build step with no custom scripting around it.
  - 4 of 35 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 18 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 0/100
  - Schema quality not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no schema to assess.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no schema to compare.
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no tool definitions to assess.
- **Tool Safety**: 0/100
  - Tool safety not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no tool text to scan.
- **Capabilities**: 0/100
  - Protocol version not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we never saw its MCP handshake.

**Unverified: 5 categories.** Categories scored 0 because our sandbox has not given us the schema these checks need to read. That is a gap on our side rather than a finding about the package, and we only credit what we can confirm, so the score stands at 0 until the capture succeeds. We are working through the fleet, so this normally clears without any action from you.

## Install

### How do I install the Arc Free Skills MCP server?

Arc Free Skills runs locally as a PyPI package, launched with uvx --from arc-free-skills==1.0.0 arc-free-skills arc-free-skills serve. The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it. Ready-made configuration for Claude, Cursor, VS Code, Codex and 3 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add archelps-arc-free-skills -- uvx --from arc-free-skills==1.0.0 arc-free-skills arc-free-skills serve
```

The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it.

### Cursor

```json
{
  "mcpServers": {
    "archelps-arc-free-skills": {
      "command": "uvx",
      "args": [
        "--from",
        "arc-free-skills==1.0.0",
        "arc-free-skills",
        "arc-free-skills",
        "serve"
      ]
    }
  }
}
```

The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it.

### VS Code

```json
{
  "servers": {
    "archelps-arc-free-skills": {
      "command": "uvx",
      "args": [
        "--from",
        "arc-free-skills==1.0.0",
        "arc-free-skills",
        "arc-free-skills",
        "serve"
      ]
    }
  }
}
```

The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it.

### Codex

```bash
codex mcp add archelps-arc-free-skills -- uvx --from arc-free-skills==1.0.0 arc-free-skills arc-free-skills serve
```

The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it.

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "archelps-arc-free-skills": {
      "type": "local",
      "command": [
        "uvx",
        "--from",
        "arc-free-skills==1.0.0",
        "arc-free-skills",
        "arc-free-skills",
        "serve"
      ],
      "enabled": true
    }
  }
}
```

The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it.

### Hermes

```yaml
mcp_servers:
  archelps-arc-free-skills:
    command: "uvx"
    args: ["--from", "arc-free-skills==1.0.0", "arc-free-skills", "arc-free-skills", "serve"]
```

The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it.

### Netclaw

```json
{
  "McpServers": {
    "archelps-arc-free-skills": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "--from",
        "arc-free-skills==1.0.0",
        "arc-free-skills",
        "arc-free-skills",
        "serve"
      ]
    }
  }
}
```

The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it.

### Other

```json
{
  "mcpServers": {
    "archelps-arc-free-skills": {
      "command": "uvx",
      "args": [
        "--from",
        "arc-free-skills==1.0.0",
        "arc-free-skills",
        "arc-free-skills",
        "serve"
      ]
    }
  }
}
```

The registry lists runner options for this package that are not in this command (they are not ones we reproduce, or they name another package). Check the registry entry before relying on it.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-18 (score 39, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-17 (score 24)

First indexed and scored.

## MCP tools (0)

Tools for package channels are captured by running the package in an isolated sandbox. The most recent sandbox run could not capture a tool list from this package.

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/archelps-arc-free-skills/arc-free-skills#diagnostics

## Score history

- 2026-11-05: 39
- 2026-11-04: 39
- 2026-11-03: 39
- 2026-11-02: 39
- 2026-11-01: 39
- 2026-10-31: 39
- 2026-10-30: 39
- 2026-10-29: 39
- 2026-10-28: 39
- 2026-10-27: 39
- 2026-10-26: 39
- 2026-10-25: 39
- 2026-10-24: 39
- 2026-10-23: 39
- 2026-10-22: 39
- 2026-10-21: 39
- 2026-10-20: 39
- 2026-10-19: 39
- 2026-10-18: 39
- 2026-10-17: 24

## Common questions

### What is the Arc Free Skills MCP server?

Arc Free Skills is an MCP server listed in the public MCP registry as io.github.ArcHelps/arc-free-skills. 100 systems and hardware engineering skills for requirements, interfaces, budgets and verification. This page covers its PyPI package (arc-free-skills).

### Is the Arc Free Skills MCP server safe to use?

Arc Free Skills scores 39 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### Is the Arc Free Skills MCP server still maintained?

Arc Free Skills is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Arc Free Skills MCP server under?

Arc Free Skills declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

### What did VerifyMCP test on the Arc Free Skills MCP server?

VerifyMCP ran 9 checks on Arc Free Skills, covering Malware scan, Known CVEs, Install scripts, Dependency health and 5 more. 5 items could not be completed, a gap on our side rather than a finding about Arc Free Skills: Schema quality, Stability, Tool coverage, Tool safety and 1 more. 5 categories score 0 for that reason, because we only credit what we can confirm. Endpoint Security and Transport & Reachability do not apply to a PyPI package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- PyPI project: https://pypi.org/project/arc-free-skills/
- Socket report: https://socket.dev/pypi/package/arc-free-skills
- Repository: https://github.com/ArcHelps/systems-engineering-skills
- Website: https://www.archelps.com/
- Changelog RSS feed: https://verifymcp.io/servers/archelps-arc-free-skills/arc-free-skills.xml
- Changelog JSON feed: https://verifymcp.io/servers/archelps-arc-free-skills/arc-free-skills/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/archelps-arc-free-skills/arc-free-skills.json
- HTML version of this page: https://verifymcp.io/servers/archelps-arc-free-skills/arc-free-skills