Agent Security MCP Server

Security scanning, prompt injection detection, secret leak detection, and agent permission auditing for AI agent workflows. Built on the Model Context Protocol (MCP).

Tools

Related MCP server: ZugaShield

Resources

Installation

cd agent-security-mcp
npm install

Usage

As a standalone server

npm start

In Claude Desktop / MCP client configuration

{
  "mcpServers": {
    "agent-security": {
      "command": "node",
      "args": ["/path/to/agent-security-mcp/src/index.js"]
    }
  }
}

With npx (after publishing)

{
  "mcpServers": {
    "agent-security": {
      "command": "npx",
      "args": ["@asl-throne/agent-security-mcp"]
    }
  }
}

Detection Coverage

Prompt Injection (7 categories, 20+ patterns)

• Instruction Override -- "ignore previous instructions", "disregard all rules", "new instructions:"

• Identity Manipulation -- "you are now", "pretend you are", "act as", DAN/jailbreak

• System Prompt Extraction -- "repeat your system prompt", "show your instructions"

• Data Exfiltration -- "send this to", "post to webhook", "email everything to"

• Delimiter Attacks -- ```system, [INST], <|im_start|>system, XML tag injection

• Encoded Injection -- Base64 payloads, unicode zero-width characters, hex escapes

• Privilege Escalation -- "sudo mode", "disable safety", "bypass filters"

Secret Detection (25+ patterns)

• AI Provider Keys -- OpenAI (sk-), Anthropic (sk-ant-)

• Cloud Credentials -- AWS (AKIA*), GCP (AIza*), Azure connection strings

• Source Control -- GitHub PATs (ghp_*, github_pat_*), OAuth tokens (gho_*)

• Payment -- Stripe live/test keys (sk_live_*, sk_test_*)

• Communication -- Slack tokens/webhooks, Telegram bot tokens

• Database -- PostgreSQL, MongoDB, MySQL, Redis connection URIs

• Cryptographic -- RSA/EC/OpenSSH private keys, generic PEM blocks

• JWT -- JSON Web Tokens

• Generic -- api_key=, secret=, password=, .env file patterns

Permission Audit (6 role profiles)

• Researcher -- Read + search + web only

• Analyst -- Read + search only

• Developer -- Read + write + execute

• Reviewer -- Read only, no network

• Orchestrator -- Read + write + task spawning

• Monitor -- Read only, no network, no write

Pricing

Requirements

• Node.js >= 18.0.0

• @modelcontextprotocol/sdk >= 1.12.0

License

MIT