Aegis

Name: Aegis
Author: undercurrentai

by undercurrentaiversion 1.4.2i★ –iRuns on your computer

Registry namecom.undercurrentholdings/aegis

Install

Overview

Description from the maker (original English)

Local stdio MCP server for the AEGIS governance client. The hosted evaluation service is offline.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 46/wk · ★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: AEGIS_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 0 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: AEGIS_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "aegis": {
      "command": "uvx",
      "args": [
        "aegis-governance"
      ],
      "env": {
        "AEGIS_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add aegis --env AEGIS_API_KEY=your-value -- uvx aegis-governance

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "aegis": {
      "command": "uvx",
      "args": [
        "aegis-governance"
      ],
      "env": {
        "AEGIS_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "aegis": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "aegis-governance"
      ],
      "env": {
        "AEGIS_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

AEGIS_API_KEY secret env
API key for the hosted AEGIS API. The hosted service is offline, so tool calls do not return evaluations. See https://undercurrentholdings.com/status/

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 9, 2026

! Caution
Maker matches the repo
The publisher (undercurrentholdings.com) is not the repo owner (undercurrentai); someone else may have listed it
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 18630 servers in this category
Published to the registry more recently than 47% of the other 18630 servers in this category
Basic checks equal to or better than 16% of the other 18630 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Aegis safe?

It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: AEGIS_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.4.2) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, CloudGPU MCP

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

AEGIS Governance — MCP Server

Status: the hosted AEGIS service is offline (since September 2026).

The hosted API and the hosted MCP endpoint (mcp.aegis.undercurrentholdings.com) are offline.

The local server does not evaluate proposals itself, so no tool returns an evaluation at this time.

Current status: https://undercurrentholdings.com/status/

What the package is

aegis-governance on PyPI is a Python client for the AEGIS API. It also contains a local MCP server. The package installs one console script, aegis-mcp-server. This script starts a local MCP server that uses the stdio transport. The package has no other command-line tool.

The local server has no evaluation engine. By default, the client sends all requests to the hosted AEGIS API. Sandbox mode (the mode without an API key) also uses the hosted API. While the hosted service is offline, tool calls do not return evaluations.

Install

pip install "aegis-governance[mcp]"

The [mcp] extra is necessary for aegis-mcp-server. On Python < 3.10, the extra installs nothing, and aegis-mcp-server exits with an install hint.

Local stdio MCP configuration

Claude Code

claude mcp add aegis -- aegis-mcp-server

Cursor (.cursor/mcp.json) / Windsurf / any stdio MCP client:

"mcpServers": { "aegis": { "command": "aegis-mcp-server" } } }

VS Code (.vscode/mcp.json):

"servers": { "aegis": { "type": "stdio", "command": "aegis-mcp-server" } } }

Tools

tools/list from aegis-mcp-server in aegis-governance 1.4.2 returns these six tools. Without AEGIS_API_KEY, aegis_evaluate_proposal and aegis_health call the hosted API, and the other four tools return an AuthenticationError JSON result without an API call. With AEGIS_API_KEY set, all six tools call the hosted API.

The descriptions below are quoted from the server. They do not describe a service that is available now.

Tool	Description (quoted from the server)
`aegis_evaluate_proposal`	Evaluate an engineering proposal through the AEGIS gate checks.
`aegis_quick_risk_check`	Quick risk threshold check without a full Bayesian evaluation.
`aegis_health`	Check AEGIS API health (service status, version, components).
`aegis_list_decisions`	List recent governance decisions for the authenticated customer.
`aegis_get_decision`	Fetch a specific governance decision by ID, with full gate detail.
`aegis_get_usage`	Get the authenticated customer's evaluation usage report.

Reading the source

The aegis-governance source repository is private. To read the published source, download the source distribution (sdist) from PyPI:

pip download --no-binary :all: --no-deps "aegis-governance==1.4.2"

Or get the .tar.gz file from the PyPI release files.

Aegis

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

CloudGPU MCP

README from the maker

AEGIS Governance — MCP Server

What the package is

Install

Local stdio MCP configuration

Tools

Reading the source