GuardianShield

Name: GuardianShield
Author: sparkvibe-io

by sparkvibe-ioversion 1.2.1i★ –iRuns on your computer

Registry nameio.github.sparkvibe-io/GuardianShield

Install

Overview

Description from the maker (original English)

AI security layer: code scanning, PII detection, prompt injection, secrets, CVEs

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↓ 28/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

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: GUARDIANSHIELD_PROFILE, GUARDIANSHIELD_AUDIT_PATH, GUARDIANSHIELD_DEBUG

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": {
    "guardianshield": {
      "command": "uvx",
      "args": [
        "guardianshield"
      ],
      "env": {
        "GUARDIANSHIELD_PROFILE": "your-value",
        "GUARDIANSHIELD_AUDIT_PATH": "your-value",
        "GUARDIANSHIELD_DEBUG": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add guardianshield --env GUARDIANSHIELD_PROFILE=your-value --env GUARDIANSHIELD_AUDIT_PATH=your-value --env GUARDIANSHIELD_DEBUG=your-value -- uvx guardianshield

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": {
    "guardianshield": {
      "command": "uvx",
      "args": [
        "guardianshield"
      ],
      "env": {
        "GUARDIANSHIELD_PROFILE": "your-value",
        "GUARDIANSHIELD_AUDIT_PATH": "your-value",
        "GUARDIANSHIELD_DEBUG": "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": {
    "guardianshield": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "guardianshield"
      ],
      "env": {
        "GUARDIANSHIELD_PROFILE": "your-value",
        "GUARDIANSHIELD_AUDIT_PATH": "your-value",
        "GUARDIANSHIELD_DEBUG": "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

GUARDIANSHIELD_PROFILE env
Default safety profile (general, education, healthcare, finance, children)
GUARDIANSHIELD_AUDIT_PATH env
Path to the SQLite audit database
GUARDIANSHIELD_DEBUG env
Set to 1 for debug logging

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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account sparkvibe-io, 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 1000 servers in this category
Published to the registry more recently than 6% of the other 1000 servers in this category
Basic checks equal to or better than 100% of the other 1000 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 GuardianShield 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?

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 –, and the latest version (1.2.1) reached the registry 8 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: Phishnoo Sandbox, Zovo Dependency Audit, TeamOnly

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

Phishnoo Sandbox

Explore synthetic security awareness metrics and file example threat reports.

by api.phishnoo.nlEarlyUpdated today

Runs in the cloud✓ api.phishnoo.nl

Install

Zovo Dependency Audit

Audit a dependency list for known vulnerabilities, licenses and outdated versions.

by theluckystrikeEarlyUpdated today

Runs in the cloud

Install

TeamOnly

Deploy AI-built internal apps behind your company login, with a database, files and secrets.

by sohelsdVery new↓ 315/wkUpdated today

Runs on your computer✓ teamonly.dev

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.

GuardianShield

Universal AI security layer — an open-source MCP server for code scanning, PII detection, prompt injection defense, secret detection, dependency auditing, and audit logging.

Zero dependencies · 27 MCP tools · 5 safety profiles · 108+ detection patterns

Features

Code Vulnerability Scanning — SQL injection, XSS, command injection, path traversal with CWE IDs and auto-fix remediation
Cross-line Data Flow Analysis — DeepEngine tracks tainted data from sources to sinks across multiple lines using AST-based taint propagation (Python) and regex (JS/TS)
Dependency Security — Version-aware CVE matching against OSV.dev for PyPI, npm, Go, and Packagist ecosystems
Manifest Parsing — Auto-detects 11 formats (requirements.txt, package.json, yarn.lock, go.mod, composer.json, and more)
Prompt Injection Defense — 9+ detection patterns for instruction override, role hijacking, ChatML injection
PII Detection — Email, SSN, credit card, phone, IP — with automatic redaction in findings
Secret Detection — AWS keys, GitHub tokens, Stripe keys, JWTs, passwords, connection strings
Safety Profiles — 5 built-in profiles (general, education, healthcare, finance, children)
Audit Logging — SQLite-backed scan history with finding retrieval and filtering

Install

pip install guardianshield

Quick Start

# Register with Claude Code

claude mcp add guardianshield -- guardianshield-mcp

Or run directly

guardianshield-mcp

Editor Integration

# Claude Code

claude mcp add guardianshield -- guardianshield-mcp

VS Code (.vscode/mcp.json)

{"servers": {"guardianshield": {"type": "stdio", "command": "guardianshield-mcp"}}}

Cursor (.cursor/mcp.json)

{"mcpServers": {"guardianshield": {"command": "guardianshield-mcp"}}}

Claude Desktop (claude_desktop_config.json)

{"mcpServers": {"guardianshield": {"command": "guardianshield-mcp"}}}

MCP Tools

Scanning

Tool	Description
`scan_code`	Scan source code for vulnerabilities and hardcoded secrets
`scan_file`	Scan a single file (auto-detects language from extension)
`scan_directory`	Recursively scan a directory with filtering and progress streaming
`scan_input`	Check user/agent input for prompt injection attempts
`scan_output`	Check AI output for PII leaks and content violations
`check_secrets`	Detect hardcoded secrets and credentials
`scan_files`	Scan multiple files in one call
`scan_diff`	Parse unified diff and scan only added lines

Dependency Security

Tool	Description
`check_dependencies`	Check packages for known CVEs via OSV.dev (PyPI, npm, Go, Packagist)
`sync_vulnerabilities`	Sync the local OSV vulnerability database
`parse_manifest`	Parse any supported manifest file (11 formats) into dependency objects
`scan_dependencies`	Scan a directory for manifest files and check all deps for vulnerabilities

False Positive Management

Tool	Description
`mark_false_positive`	Mark a finding as false positive (flags future matches)
`list_false_positives`	List active false positive records with optional filter
`unmark_false_positive`	Remove a false positive record by fingerprint

Engine Management

Tool	Description
`list_engines`	List available analysis engines with capabilities
`set_engine`	Set active analysis engines for code scanning

Three engines ship built-in: regex (line-by-line pattern matching, enabled by default), deep (cross-line taint tracking), and semantic (structure-aware confidence adjustment).

CI & Developer Workflow

Tool	Description
`export_sarif`	Export findings as SARIF 2.1.0 JSON for GitHub Code Scanning and CI
`save_baseline`	Save current findings as a baseline for delta scanning
`scan_with_baseline`	Scan code and report only new findings vs. baseline
`check_quality_gate`	Evaluate findings against severity thresholds (pass/fail/warn)
`scan_files`	Scan multiple files in one call
`scan_diff`	Parse unified diff and scan only added lines

Configuration & Utilities

Tool	Description
`get_profile`	Get current safety profile configuration
`set_profile`	Switch safety profile (general, education, healthcare, finance, children)
`test_pattern`	Test a regex pattern against sample code for custom pattern development
`audit_log`	Query the security audit log
`get_findings`	Retrieve past findings with filters
`shield_status`	Get health, configuration, and OSV cache statistics

Configuration

Set environment variables to customize behavior:

Variable	Description	Default
`GUARDIANSHIELD_PROFILE`	Default safety profile	`general`
`GUARDIANSHIELD_AUDIT_PATH`	Path to SQLite audit database	`~/.guardianshield/audit.db`
`GUARDIANSHIELD_DEBUG`	Enable debug logging (`1`)	disabled

Documentation

Full documentation: sparkvibe-io.github.io/GuardianShield

License

Apache 2.0

GuardianShield

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

Phishnoo Sandbox

Zovo Dependency Audit

TeamOnly

README from the maker

GuardianShield

Features

Install

Quick Start

Or run directly

Editor Integration

VS Code (.vscode/mcp.json)

Cursor (.cursor/mcp.json)

Claude Desktop (claude_desktop_config.json)

MCP Tools

Scanning

Dependency Security

False Positive Management

Engine Management

CI & Developer Workflow

Configuration & Utilities

Configuration

Documentation

License