Mcp Shield

cybercraftsolutionsllc/trust-gated-agent-example

HTTPregistry active

Summary

Adds a security layer for AI agents connecting to MCP servers. Exposes six tools including check_trust to look up scores by URL or npm package, scan_server for live security analysis, and search_registry to query over 4,200 indexed servers. The pattern is straightforward: before connecting to any MCP server, call check_trust and refuse connections to anything graded D or F. Also includes payment tools for initiating USDC certification and verifying on-chain transactions. Connects to the CraftedTrust API at mcp.craftedtrust.com. Useful if you're building agents that dynamically connect to third-party MCP servers and need a trust gate similar to SSL certificate verification.

CodeRabbit

AI writes the code. CodeRabbit catches the slop.

Try For Free →

inference shell

create and run specialised agents in minutes

build now →

MCP-ready Email Sending

Plug Mailtrap into your AI workflow and let it handle the email.

Connect Mailtrap MCP →

Make your agent a DeFi expert

Agent, run crypto. Access onchain data & trade routes via 1inch.

Install now →

Capacitor - Shared memory for your team’s coding agents.

Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.

Try For Free →

CodeScene MCP Server

Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.

Try For Free →

Give your AI the whole web as clean markdown

Integrate web data into your AI product. One API to scrape website & brand data.

Get API Key Now →

belt - the only tool your agent needs

belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...

one prompt install →

CodeRabbit

AI writes the code. CodeRabbit catches the slop.

Try For Free →

inference shell

create and run specialised agents in minutes

build now →

MCP-ready Email Sending

Plug Mailtrap into your AI workflow and let it handle the email.

Connect Mailtrap MCP →

Make your agent a DeFi expert

Agent, run crypto. Access onchain data & trade routes via 1inch.

Install now →

Capacitor - Shared memory for your team’s coding agents.

Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.

Try For Free →

CodeScene MCP Server

Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.

Try For Free →

Give your AI the whole web as clean markdown

Integrate web data into your AI product. One API to scrape website & brand data.

Get API Key Now →

belt - the only tool your agent needs

belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...

one prompt install →

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:

{
  "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.

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.

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

How It Works

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 ✓

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

Featured

CodeRabbit

AI writes the code. CodeRabbit catches the slop.

Try For Free →

inference shell

create and run specialised agents in minutes

build now →

MCP-ready Email Sending

Plug Mailtrap into your AI workflow and let it handle the email.

Connect Mailtrap MCP →

Make your agent a DeFi expert

Agent, run crypto. Access onchain data & trade routes via 1inch.

Install now →

Capacitor - Shared memory for your team’s coding agents.

Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.

Try For Free →

CodeScene MCP Server

Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.

Try For Free →

Give your AI the whole web as clean markdown

Integrate web data into your AI product. One API to scrape website & brand data.

Get API Key Now →

belt - the only tool your agent needs

belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...

one prompt install →

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:

{
  "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.

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.

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

How It Works

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 ✓

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

Mcp Shield

Trust-Gated Agent Examples

Quick Start

The Pattern

Examples

Python (LangGraph)

TypeScript (MCP Client)

How It Works

Trust Score Grades

API Reference

License

Mcp Shield

Trust-Gated Agent Examples

Quick Start

The Pattern

Examples

Python (LangGraph)

TypeScript (MCP Client)

How It Works

Trust Score Grades

API Reference

License

Related AI & LLM Tools MCP Servers

Related AI & LLM Tools MCP Servers