# Aegis Security Skills (npm · aegis-skills)

Read-only library of 24 defensive cybersecurity skills: ATT&CK, ATLAS, DFIR, CTEM and more.

- Trust score: 69/100 (medium)
- Change this week: −1
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-23

## Components

- remote · `aegis-skills.vercel.app`: 78/100, [markdown](https://verifymcp.io/servers/drupadsachania-aegis-skills/api-mcp.md), [page](https://verifymcp.io/servers/drupadsachania-aegis-skills/api-mcp)
- npm · `aegis-skills`: 69/100 (this document), [markdown](https://verifymcp.io/servers/drupadsachania-aegis-skills/aegis-skills.md), [page](https://verifymcp.io/servers/drupadsachania-aegis-skills/aegis-skills)

## Channel facts

- Registry: `npm`
- Package: `aegis-skills`
- Version: `1.5.0`
- 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 2026-10-23.

- **Supply Chain Security**: 80/100
  - No malware found by supply-chain analysis.
  - CVE check failed: a known high-severity CVE affects @modelcontextprotocol/sdk 1.31.0, a direct dependency. A fixed version is available.
  - No install/post-install scripts declared.
  - 38 of 103 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 48/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license ((Apache-2.0 OR MIT)).
  - Actively maintained (last published 9 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 72/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 222 tokens (~74/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 30/100
  - Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Aegis Security Skills MCP server?

Aegis Security Skills runs locally as an npm package, launched with npx -y aegis-skills. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add drupadsachania-aegis-skills -- npx -y aegis-skills
```

### Cursor

```json
{
  "mcpServers": {
    "drupadsachania-aegis-skills": {
      "command": "npx",
      "args": [
        "-y",
        "aegis-skills"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "drupadsachania-aegis-skills": {
      "command": "npx",
      "args": [
        "-y",
        "aegis-skills"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add drupadsachania-aegis-skills -- npx -y aegis-skills
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "drupadsachania-aegis-skills": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "aegis-skills"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add drupadsachania-aegis-skills --command npx --arg -y --arg aegis-skills
```

### Hermes

```yaml
mcp_servers:
  drupadsachania-aegis-skills:
    command: "npx"
    args: ["-y", "aegis-skills"]
```

### Netclaw

```json
{
  "McpServers": {
    "drupadsachania-aegis-skills": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "aegis-skills"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add drupadsachania-aegis-skills -t stdio -c npx -a -y aegis-skills
```

### Other

```json
{
  "mcpServers": {
    "drupadsachania-aegis-skills": {
      "command": "npx",
      "args": [
        "-y",
        "aegis-skills"
      ]
    }
  }
}
```

## 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.

### 2026-10-23 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 68, +3)

- [functional improvement] Stability: unverified → 0.27

### 2026-10-21 (score 65, −5)

- [security regression] CVE-2026-111769 affects this package: high
- [security regression] CVE-2026-111768 affects this package: high
- [security regression] CVE-2026-111771 affects this package: high
- [security regression] CVE-2026-111767 affects this package: high
- [security regression] Known CVEs: partial → fail
- [security improvement] CVE-2026-97058 no longer affects this package

### 2026-10-14 (score 70, +31)

- [security improvement] Injection markers: unverified → pass
- [security] First check of Judged manipulation: pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Destructive annotations: pass
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: good
- [functional] First check of Tool coverage: 100

### 2026-10-13 (score 39)

First indexed and scored.

## MCP tools (3)

### `list_skills` (~64 tokens)

List Aegis skills

List available defensive security skills, optionally filtered by family or a free-text query (matched against name, description, tags and frameworks).

Input parameters:

- `family` (string): Skill family: framework, intel, response, domain, governance
- `query` (string): Free-text filter

### `get_skill` (~41 tokens)

Get an Aegis skill

Return a skill's description, frameworks, tags, context and ordered phase ids.

Input parameters:

- `name` (string, required): Skill slug, e.g. "exposure-validation"

### `get_skill_phase` (~75 tokens)

Load a skill phase

Load the methodology content for one phase of a skill. The phase is given as a phase id or as a 0-based index among authored phases.

Input parameters:

- `name` (string, required): Skill slug
- `phase` (string, required): Phase id (e.g. "edr-deployment") or index (e.g. "0")

## Diagnostics

Captured diagnostic sections: Provenance, Vulnerabilities, Dependencies. The full working is on the page: https://verifymcp.io/servers/drupadsachania-aegis-skills/aegis-skills#diagnostics

## Score history

- 2026-10-23: 69
- 2026-10-22: 68
- 2026-10-21: 65
- 2026-10-20: 70
- 2026-10-19: 70
- 2026-10-18: 70
- 2026-10-17: 70
- 2026-10-16: 70
- 2026-10-15: 70
- 2026-10-14: 70
- 2026-10-13: 39

## Common questions

### What is the Aegis Security Skills MCP server?

Aegis Security Skills is an MCP server listed in the public MCP registry as io.github.drupadsachania/aegis-skills. Read-only library of 24 defensive cybersecurity skills: ATT&CK, ATLAS, DFIR, CTEM and more. This page covers its npm package (aegis-skills).

### Is the Aegis Security Skills MCP server safe to use?

Aegis Security Skills scores 69 out of 100 on VerifyMCP. We recorded 4 known advisories against it as of 23 October 2026. It declares no install or post-install scripts. 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.

### What tools does the Aegis Security Skills MCP server expose?

Aegis Security Skills exposes 3 tools: list_skills, get_skill, get_skill_phase. Their descriptions and schemas cost roughly 180 tokens of context every time the server is loaded.

### Is the Aegis Security Skills MCP server still maintained?

Aegis Security Skills is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- npm package: https://www.npmjs.com/package/aegis-skills
- Socket report: https://socket.dev/npm/package/aegis-skills
- Repository: https://github.com/drupadsachania/aegis-skills
- Website: https://aegis-skills.vercel.app/
- Changelog RSS feed: https://verifymcp.io/servers/drupadsachania-aegis-skills/aegis-skills.xml
- Changelog JSON feed: https://verifymcp.io/servers/drupadsachania-aegis-skills/aegis-skills.json
- HTML version of this page: https://verifymcp.io/servers/drupadsachania-aegis-skills/aegis-skills