Is GuardianShield MCP Server safe to use?

GuardianShield MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install GuardianShield MCP Server?

GuardianShield MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can GuardianShield MCP Server do?

GuardianShield MCP Server provides 27 tools: scan_code, scan_file, scan_directory, scan_input, scan_output and 22 more. See the full tools list on the server page for descriptions and parameters.

What AI clients work with GuardianShield MCP Server?

GuardianShield MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.

Is GuardianShield MCP Server actively maintained?

GuardianShield MCP Server is recently maintained — last commit was 77 days ago. It has 3 GitHub stars.

GuardianShield MCP Server

guardianshield

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

3 27 tools GitHub PyPI

No known CVEs

No license

Maintained

Last commit 77d ago

Works with most clients

Transport: stdio, http

27 tools · ~880 tok

Grade B · 0.4% of 200K ctx

Edit this pageView history

Security

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-github-sparkvibe-io-guardianshield": {
      "args": [
        "guardianshield"
      ],
      "command": "uvx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-sparkvibe-io-guardianshield)](https://mcppedia.org/s/io-github-sparkvibe-io-guardianshield)

Read me

What GuardianShield MCP Server does

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

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

uvx 'guardianshield' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

78/100across 5 weighted dimensions

How we score →

0255075100

−22

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked guardianshield against OSV.dev.

Inventory

Tools (27)

Click any tool to inspect its schema.

~880 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is GuardianShield MCP Server safe to use?: GuardianShield MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install GuardianShield MCP Server?: GuardianShield MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can GuardianShield MCP Server do?: GuardianShield MCP Server provides 27 tools: scan_code, scan_file, scan_directory, scan_input, scan_output and 22 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with GuardianShield MCP Server?: GuardianShield MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.
Is GuardianShield MCP Server actively maintained?: GuardianShield MCP Server is recently maintained — last commit was 77 days ago. It has 3 GitHub stars.

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Get CVE alerts and security updates for GuardianShield MCP Server and similar servers.

Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Security

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-github-sparkvibe-io-guardianshield": {
      "args": [
        "guardianshield"
      ],
      "command": "uvx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-sparkvibe-io-guardianshield)](https://mcppedia.org/s/io-github-sparkvibe-io-guardianshield)

Read me

What GuardianShield MCP Server does

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

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

uvx 'guardianshield' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

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 capabi

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

78/100across 5 weighted dimensions

How we score →

0255075100

−22

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked guardianshield against OSV.dev.

Inventory

Tools (27)

Click any tool to inspect its schema.

~880 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is GuardianShield MCP Server safe to use?: GuardianShield MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install GuardianShield MCP Server?: GuardianShield MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can GuardianShield MCP Server do?: GuardianShield MCP Server provides 27 tools: scan_code, scan_file, scan_directory, scan_input, scan_output and 22 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with GuardianShield MCP Server?: GuardianShield MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.
Is GuardianShield MCP Server actively maintained?: GuardianShield MCP Server is recently maintained — last commit was 77 days ago. It has 3 GitHub stars.