Enigmagent MCP

Name: Enigmagent MCP
Author: Agnuxo1

by Agnuxo1version 1.0.2i★ –iRuns on your computer

Registry nameio.github.Agnuxo1/enigmagent-mcp

Install

Overview

Description from the maker (original English)

Local AES-256-GCM vault for AI agents. Secrets stay local, LLMs never see real API keys.

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 checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 68/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: Cybersecurity
You need to fill in: VAULT_PASSWORD

Install

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

Before you install

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

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

You need

npmNode.js installed (for the npx 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": {
    "enigmagent": {
      "command": "npx",
      "args": [
        "-y",
        "enigmagent-mcp"
      ],
      "env": {
        "VAULT_PASSWORD": "your-value",
        "VAULT_PATH": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add enigmagent --env VAULT_PASSWORD=your-value --env VAULT_PATH=your-value -- npx -y enigmagent-mcp

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": {
    "enigmagent": {
      "command": "npx",
      "args": [
        "-y",
        "enigmagent-mcp"
      ],
      "env": {
        "VAULT_PASSWORD": "your-value",
        "VAULT_PATH": "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": {
    "enigmagent": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "enigmagent-mcp"
      ],
      "env": {
        "VAULT_PASSWORD": "your-value",
        "VAULT_PATH": "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

VAULT_PASSWORD secret env
Master password used to decrypt the local EnigmAgent vault (AES-256-GCM + Argon2id).
VAULT_PATH env
Path to the vault.json file (default: ./vault.json).

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 10, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Agnuxo1, which owns the repo
… 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 Cybersecurityi

More stars than 0% of the other 1012 servers in this category
Published to the registry more recently than 14% of the other 1012 servers in this category
Basic checks equal to or better than 100% of the other 1012 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 Enigmagent MCP safe?

It passed 1 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: VAULT_PASSWORD

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 (1.0.2) reached the registry 7 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Reversecore MCP, rustsdcmcp, Domain Security

Alternatives

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Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Install

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.

enigmagent-mcp 2.0.0

enigmagent-mcp is a local encrypted vault server for MCP-capable clients. It stores secret values with an Argon2id-derived AES-256-GCM key and keeps the vault file encrypted at rest.

Version 2.0.0 makes the security boundary explicit:

MCP starts in metadata-only mode. Raw secret resolution is disabled unless the operator passes --allow-raw-resolve or sets ENIGMAGENT_ALLOW_RAW_RESOLVE=1.
REST binds to 127.0.0.1 and requires a 32–256 character Bearer token.
REST requests have bounded headers, bodies, and timeouts; responses do not include arbitrary exception messages or permissive browser CORS.
Vault writes use a temporary file, flush, replacement, and a recovery backup.
Version 1 vaults remain readable. New vaults use format version 2 and the versioned KDF context enigma/v2.

Raw resolution is deliberately an opt-in escape hatch. A caller-declared origin is not proof of the network destination, and a trusted MCP client can still pass returned plaintext to its model. Do not enable raw resolution for an untrusted client or a shared process.

Install and run

npx enigmagent-mcp@2.0.0 --vault ./my.vault.json

The first run prompts for the existing vault credentials when attached to a terminal. For a trusted headless process, set ENIGMAGENT_USER and ENIGMAGENT_PASS in its private environment. The server does not print either value.

MCP modes

The stdio transport implements bounded JSON-RPC MCP initialization, ping, tools/list, and tools/call. The default tool is:

enigmagent_list: names, domains, and creation timestamps only.

With explicit raw-resolution opt-in, it additionally exposes:

enigmagent_resolve: returns a value only when the requested origin matches the entry's domain binding.

The origin is normalized and limited to HTTP(S) URLs without embedded user credentials. Notifications, malformed JSON, oversized frames, invalid tool arguments, and calls before initialization are handled without terminating the process.

Authenticated REST

set ENIGMAGENT_API_TOKEN=use-a-random-32-character-token-or-longer

npx enigmagent-mcp@2.0.0 --mode rest --port 3737 --vault ./my.vault.json

GET /health is a minimal unauthenticated liveness check. GET /status and GET /list require Authorization: Bearer . POST /resolve also requires the token, JSON content type, and the explicit raw-resolution flag. The service rejects browser-origin requests and binds only to loopback.

Client configuration adapters

integrations.js provides tested configuration builders for Claude Desktop, Cursor, Continue, Cline, Open WebUI, AnythingLLM, LM Studio, Zed, Goose, and Windsurf. They are maintained configuration examples using the standard MCP stdio command; they are not upstream plugins, endorsements, or claims of adoption by those projects.

Development and verification

npm ci

npm test npm run check npm run benchmark npm pack --dry-run

The tests cover encrypted-at-rest behavior, domain matching, wrong credentials, version-1 migration reads, backup recovery, bounded MCP framing and session ordering, authenticated REST, and all ten configuration adapters. The benchmark uses synthetic data and reports create/add/resolve latency without printing a secret.

Release contents

The historical 1.0.5 tree is preserved in versions/1.0.5/ with its source archive and SHA-256 manifest. The 2.0.0 release is represented consistently in package.json, server.json, and manifest.json; publication remains subject to the repository's CI and release checks.

Scope and threat model

This project protects vault contents from ordinary plaintext-at-rest exposure and from accidental return by the metadata listing tool. It does not protect against a compromised operating system, a process with access to the unlocked memory, malicious client code, side channels, swap/core dumps, or an operator who explicitly enables raw resolution for an untrusted model. Review SECURITY.md in the main EnigmAgent project for broader ecosystem guidance.

MIT licensed. See LICENSE.

Enigmagent MCP

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 Cybersecurityi

Common questions

Alternatives

Reversecore MCP

rustsdcmcp

Domain Security

README from the maker

enigmagent-mcp 2.0.0

Install and run

MCP modes

Authenticated REST

Client configuration adapters

Development and verification

Release contents

Scope and threat model