Aegis Security Skills

io.github.drupadsachaniaPublished by GitHub account drupadsachaniav1.5.0Updated Oct 24, 2026

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

VerifiedStreamable HTTPWeb executableKnowledge & MemorySecurity & Monitoring

Overview

AI-generated overview

Read-only MCP server exposing 24 defensive cybersecurity skills (ATT&CK, ATLAS, DFIR, CTEM and more) so an assistant can look up methodologies phase by phase.

What you can do
  • List available defensive security skills, filtered by family or free-text query
  • Read a skill's description, frameworks, tags, context and ordered phase ids
  • Load the methodology text for a single phase of a skill, by phase id or 0-based index
When to use it
Useful when an assistant should follow a structured defensive security methodology — threat-informed defense, incident response or threat modeling — and needs the skill text on demand rather than pasted into the prompt.
Requirements
Either the hosted remote endpoint or the npm package run locally with Node.js via npx; no accounts, API keys or environment variables are declared. The installer writes skill files into a tool's skills folder and edits its MCP config.
Before you install
The tools are read-only and return fixed public text; the hosted server receives the tool call and usual request metadata such as IP address. The installer modifies tool configuration files (backed up first) and keeps a ledger under ~/.aegis; auto-refresh after upgrades can be disabled with AEGIS_NO_AUTO_REFRESH. Skills are intended for defensive use on systems you own or are authorized to assess.

Installation

In SourceWeft

  1. Open Aegis Security Skills in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.drupadsachania%2Faegis-skills/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "aegis-security-skills": {
      "type": "http",
      "url": "https://aegis-skills.vercel.app/api/mcp"
    }
  }
}

README

aegis-skills

24 defensive cybersecurity skills in the open Agent Skills format, with a native installer and a read-only MCP server.

Install

npx aegis-skills install --platform claude          # or codex, gemini, cursor, vscode, antigravity, allnpx aegis-skills install --platform claude --project

Skills go into each tool's own skills folder and the aegis MCP server is registered in its config (the file is backed up first). After an upgrade, installed skills refresh automatically; files you edited are kept as .bak. Opt out with AEGIS_NO_AUTO_REFRESH=1.

Claude Code plugin: /plugin marketplace add drupadsachania/aegis-skills, then /plugin install aegis-skills@aegis-skills.

Commands

install (alias init), uninstall, update, list, mcp. Run aegis --help.

MCP

npx aegis-skills mcp serves list_skills, get_skill and get_skill_phase on stdio. Hosted: https://aegis-skills.vercel.app/api/mcp.

What this plugin runs, sends and fetches

  • Claude Code plugin (.mcp.json): connects to one remote MCP server, https://aegis-skills.vercel.app/api/mcp. It runs no local command. The three tools (list_skills, get_skill, get_skill_phase) are read-only and return fixed public skill text. What is sent is the tool call itself (a skill name, a phase or a search word) and the usual request metadata such as your IP address. The server keeps only an in-memory request counter, makes no model calls and stores nothing. The skills themselves are plain Markdown that your assistant reads locally.
  • npx aegis-skills (the installer and stdio server): runs the pinned npm package aegis-skills. install writes skill files into your tool's skills folder and adds an aegis entry to its MCP config (backed up first). A ledger of what it installed is kept under ~/.aegis (override with AEGIS_HOME). mcp serves the same three read-only tools from the bundled skills on stdio. Neither command makes a network request of its own beyond npm downloading the package.
  • No telemetry, no analytics and no credentials. Nothing is read from your conversations, memory or uploaded files.

Every skill is for defensive use on systems you own or are explicitly authorized to assess.

Licence: Apache-2.0 OR MIT.

Source: packages/aegis/README.md at commit d0b2072

Tools

3

list_skills

List Aegis skills

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

Parametersqueryfamily

get_skill

Get an Aegis skill

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

Parametersnamerequired

get_skill_phase

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.

Parametersnamerequiredphaserequired

Version history

1
  1. v1.5.0LatestOct 13, 2026

Score

90% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.