Is the mcp-shield MCP server free to use?

Yes. mcp-shield is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Is the mcp-shield MCP server free to use?

Yes. mcp-shield is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Mcp Shield

Trust verification for MCP servers. Check scores, scan for security issues, search 4,200+ servers.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client

claude_desktop_config.json

{
  "mcpServers": {
    "mcp-shield": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-shield"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

Trust-Gated Agent Examples

Reference implementations showing how to make AI agents check CraftedTrust before connecting to any MCP server. If a server scores D or F, the agent refuses to connect.

This is the "SSL certificate check for AI agents" pattern.

Quick Start

Add CraftedTrust to your agent's MCP config:

config.json

{
  "mcpServers": {
    "craftedtrust": {
      "url": "https://mcp.craftedtrust.com/api/v1/mcp",
      "description": "Check trust scores before connecting to MCP servers"
    }
  }
}

Your agent now has access to 6 tools:

Tool	Description
`check_trust`	Look up trust score by URL or npm name
`scan_server`	Trigger a live security scan
`search_registry`	Search 4,200+ indexed MCP servers
`get_stats`	Ecosystem statistics
`pay_for_certification`	Initiate USDC certification payment
`verify_payment`	Verify on-chain payment

The Pattern

Before your agent connects to any new MCP server:

Call check_trust on CraftedTrust
If grade is D or F, refuse and explain why
If grade is A/B/C, proceed with the connection

Examples

Python (LangGraph)

See python/trust_gated_agent.py for a complete LangGraph agent that gates MCP connections through CraftedTrust.

bash

cd python
pip install -r requirements.txt
python trust_gated_agent.py

TypeScript (MCP Client)

See typescript/trust-gated-client.ts for a TypeScript MCP client that checks trust scores before connecting.

bash

cd typescript
npm install
npx tsx trust-gated-client.ts

How It Works

Code

Agent receives task → needs mcp.example.com
         ↓
Agent calls CraftedTrust check_trust("mcp.example.com")
         ↓
Score: 82/100, Grade: B ← Safe
         ↓
Agent connects to mcp.example.com ✓

Code

Agent receives task → needs sketchy-server.xyz
         ↓
Agent calls CraftedTrust check_trust("sketchy-server.xyz")
         ↓
Score: 15/100, Grade: F ← Dangerous
         ↓
Agent refuses: "Server scored F (15/100). Not connecting." ✗

Trust Score Grades

Grade	Score	Meaning
A	90-100	Excellent security practices
B	75-89	Good security, minor improvements possible
C	60-74	Adequate but has gaps
D	40-59	Significant security issues
F	0-39	Critical issues, do not connect

API Reference

Full API documentation: mcp.craftedtrust.com/api-docs.html

License

MIT

Built by Cyber Craft Solutions LLC

Related MCP Servers

View all in Security View all alternatives

Frequently Asked Questions about Mcp Shield

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "mcp-shield": { "command": "npx", "args": ["-y", "mcp-shield"] } }

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Technical Specs & Signals

CategorySecurity

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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More in 🔒 Security →Best MCP servers for Security →Alternatives to Mcp Shield →Install in Claude Desktop Install in Cursor Install in VS Code

Mcp Shield

Trust verification for MCP servers. Check scores, scan for security issues, search 4,200+ servers.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client

claude_desktop_config.json

{
  "mcpServers": {
    "mcp-shield": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-shield"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

Trust-Gated Agent Examples

Reference implementations showing how to make AI agents check CraftedTrust before connecting to any MCP server. If a server scores D or F, the agent refuses to connect.

This is the "SSL certificate check for AI agents" pattern.

Quick Start

Add CraftedTrust to your agent's MCP config:

config.json

{
  "mcpServers": {
    "craftedtrust": {
      "url": "https://mcp.craftedtrust.com/api/v1/mcp",
      "description": "Check trust scores before connecting to MCP servers"
    }
  }
}

Your agent now has access to 6 tools:

Tool	Description
`check_trust`	Look up trust score by URL or npm name
`scan_server`	Trigger a live security scan
`search_registry`	Search 4,200+ indexed MCP servers
`get_stats`	Ecosystem statistics
`pay_for_certification`	Initiate USDC certification payment
`verify_payment`	Verify on-chain payment

The Pattern

Before your agent connects to any new MCP server:

Call check_trust on CraftedTrust
If grade is D or F, refuse and explain why
If grade is A/B/C, proceed with the connection

Examples

Python (LangGraph)

See python/trust_gated_agent.py for a complete LangGraph agent that gates MCP connections through CraftedTrust.

bash

cd python
pip install -r requirements.txt
python trust_gated_agent.py

TypeScript (MCP Client)

See typescript/trust-gated-client.ts for a TypeScript MCP client that checks trust scores before connecting.

bash

cd typescript
npm install
npx tsx trust-gated-client.ts

How It Works

Code

Agent receives task → needs mcp.example.com
         ↓
Agent calls CraftedTrust check_trust("mcp.example.com")
         ↓
Score: 82/100, Grade: B ← Safe
         ↓
Agent connects to mcp.example.com ✓

Code

Agent receives task → needs sketchy-server.xyz
         ↓
Agent calls CraftedTrust check_trust("sketchy-server.xyz")
         ↓
Score: 15/100, Grade: F ← Dangerous
         ↓
Agent refuses: "Server scored F (15/100). Not connecting." ✗

Trust Score Grades

Grade	Score	Meaning
A	90-100	Excellent security practices
B	75-89	Good security, minor improvements possible
C	60-74	Adequate but has gaps
D	40-59	Significant security issues
F	0-39	Critical issues, do not connect

API Reference

Full API documentation: mcp.craftedtrust.com/api-docs.html

License

MIT

Built by Cyber Craft Solutions LLC

Related MCP Servers

View all in Security View all alternatives

Frequently Asked Questions about Mcp Shield

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "mcp-shield": { "command": "npx", "args": ["-y", "mcp-shield"] } }

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/mcp-shield?style=directory)](https://allmcps.com/mcp/mcp-shield)

HTML Embed

<a href="https://allmcps.com/mcp/mcp-shield"><img src="https://allmcps.com/api/badge/mcp-shield?style=directory" alt="Mcp Shield on AllMCPs" /></a>

Technical Specs & Signals

CategorySecurity

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

★ Spotlight Slot

Feature Your MCP Server

Get maximum visibility for your server across our directory, search results, and detail pages.

Spotlight Your Server

Own this project?

This directory is pre-filled from public sources. Claim via GitHub README, site badge, or DNS TXT to get the verified badge and attach your website.

Free dofollow backlink: after claiming, verify your product site and place a dofollow AllMCPs badge — we recheck it stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 🔒 Security →Best MCP servers for Security →Alternatives to Mcp Shield →Install in Claude Desktop Install in Cursor Install in VS Code