Guard Core

Name: Guard Core
Author: Guard-Core

by Guard-Coreversion 1.7.0i★ 3iRuns on your computer

Registry nameio.github.Guard-Core/guard-core-mcp

How to install

Overview

Description from the maker (original English)

Guard Core security MCP: SecurityConfig validation, docs search, live threat detection.

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

Install

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

Passed 2/2 checks · Runs on your computer

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "guard-core": {
      "command": "uvx",
      "args": [
        "guard-core-mcp"
      ]
    }
  }
}

Done

Quit Claude and open it again
Done
Try it
Use Guard Core and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Guard Core or shows a Guard Core tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Guard Core yet

Guard Core runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Guard Core

Steps for Claude →Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →Install Python (uv) on your computer first (one time)
Steps for Cursor →Install Python (uv) on your computer first (one time)
Steps for VS Code →Install Python (uv) on your computer first (one time)

B · Others in Cybersecurity that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

GitHits✓ ChatGPT
EchelonGraph CVE & Exposure✓ ChatGPT
GoSQLX✓ ChatGPT

Works with Claude Code, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add guard-core -- uvx guard-core-mcp

Done

Type /mcp in Claude Code
You should see Guard Core listed as connected
Done
Try it
Use Guard Core and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Guard Core or shows a Guard Core tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Guard Core and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Guard Core or shows a Guard Core tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Guard Core and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Guard Core or shows a Guard Core tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Guard Core💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add guard-core -- uvx guard-core-mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "guard-core": {
      "command": "uvx",
      "args": [
        "guard-core-mcp"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "guard-core": {
      "command": "uvx",
      "args": [
        "guard-core-mcp"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "guard-core": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "guard-core-mcp"
      ]
    }
  }
}

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

At a glance

GitHub stars i: 3
Downloads per weeki: 73/wk
Licence i: No licence stated
Connection: Runs on your computer
Transport: stdio
Latest versioni: 1.7.0
Categoryi: Cybersecurity
Published to registryi: Oct 19, 2026
Code last changedi: Nov 9, 2026
Maker: Guard-Core
Packages: pypi: guard-core-mcp
Repo: Guard-Core/guard-core-mcp
Website: guard-core.github.io
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

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 11, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Guard-Core, which owns the repo
✓ Pass
Still maintained
Code last changed 2 days ago
… 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

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Cybersecurityi

More stars than 86% of the other 1030 servers in this category
Published to the registry more recently than 62% of the other 1030 servers in this category
Basic checks equal to or better than 100% of the other 1030 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 Guard Core safe?

It passed 2 of 2 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

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 2 days ago, and the latest version (1.7.0) reached the registry 23 days 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: Robin: AI-Powered Dark Web OSINT, HOL Guard, UniFi Network MCP

Alternatives

Servers in the same category from other makers, sorted by stars.

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

Robin: AI-Powered Dark Web OSINT

Dark web OSINT over Tor: search onion engines, scrape pages, report with your own model.

by apurvsinghgautamGrowing★ 7.9KUpdated 39 days ago

Runs on your computer

Install

HOL Guard

Local-first AI agent security evidence and approval workflows through HOL Guard's stdio MCP server.

by hashgraph-onlineWidely used↓ 7.1K/wk★ 1.1KUpdated 6 days ago

Runs on your computer

Install

UniFi Network MCP

Manage UniFi Network devices, clients, firewall, VLANs, VPNs, and more via MCP.

by sirkirbyWidely used↓ 11.3K/wk★ 1K Stars for the whole repoUpdated 8 months ago

Runs on your computer

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.

Model Context Protocol server for the Guard ecosystem: config validation, docs search, and corpus tooling for agents and developers.

Website · Docs · Playground · Dashboard · Discord

Ecosystem

Guard Core is the Python engine. Framework adapters are thin wrappers that translate native request/response types into Guard Core's protocols. The telemetry agents ship security events and metrics to the monitoring backend. Parallel engine implementations exist for Go, PHP, TypeScript (on npm), and Rust (on crates.io) - all ports of the same reference semantics, conformance-tested against the shared adversarial corpus.

Python

Package	Role	PyPI
guard-core	Framework-agnostic security engine
guard-agent	Telemetry agent
fastapi-guard	FastAPI / Starlette adapter
flaskapi-guard	Flask adapter
djapi-guard	Django adapter
tornadoapi-guard	Tornado adapter

Go

Go modules published via GitHub releases. Production-ready.

Package	Role	Release
guard-core-go	Go engine
nethttp-guard	net/http adapter
gin-guard	Gin adapter
echo-guard	Echo (v4) adapter
fiber-guard	Fiber (v3) adapter
guard-agent-go	Telemetry agent

PHP

Published on Packagist under the rennf93 vendor. Production-ready.

Package	Role	Packagist
guard-core-php	PHP engine
laravel-guard	Laravel adapter
symfony-guard	Symfony adapter
psr15-guard	PSR-15 adapter
slim-guard	Slim 4 adapter
guard-agent-php	Telemetry agent

TypeScript / JavaScript

Published under the @guardcore npm scope; source in the guard-core-ts monorepo. Production-ready.

Package	Role	npm
	@guardcore/core	Core engine
@guardcore/express	Express adapter
@guardcore/nestjs	NestJS adapter
@guardcore/fastify	Fastify adapter
@guardcore/hono	Hono (edge) adapter
guardagent	Telemetry agent

Rust

Published on crates.io. Production-ready.

Package	Role	crates.io
guard-core-engine	Core engine crate
guard-core-rs	Facade crate (consumer entry point)
actix-guard-rs	Actix Web adapter
axum-guard-rs	Axum adapter
tower-guard-rs	Tower adapter
rocket-guard-rs	Rocket adapter
guard-agent-rs	Telemetry agent

AI Coding Agents

Package	Role	PyPI
guard-core-mcp	MCP server: config validation, docs search, detection sandbox

Documentation

📚 [Documentation](https://guard-core.github.io/guard-core-mcp/latest/) -

Only the beginning is shown; read the rest in the repo

Guard Core

Overview

What you can do with it

Install

Install Python (uv)

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Python (uv)

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Python (uv)

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Install Python (uv)

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

At a glance

Which apps can use it

Related guides

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

Discussion

User reviews

Compared with others in Cybersecurityi

Common questions

Alternatives

Robin: AI-Powered Dark Web OSINT

HOL Guard

UniFi Network MCP

README from the maker

Ecosystem

Python

Go

PHP

TypeScript / JavaScript

Rust

AI Coding Agents

Documentation