@shivdev/agent-warden

@shivdev/agent-warden is an MCP server by shivdev. A firewall for AI agents. Detects and blocks prompt injection in email, web pages, documents and MCP tool results before they reach your model. It is listed in Developer Tools.

Category

Developer Tools

Author

shivdev

GitHub stars

Not on GitHub

This week

Tracking since 18 Oct 2026

Language

JavaScript

License

MIT (open source)

Last update

2026-10-19 (5 days ago)

Links

Sourcenpm

• prompt-injection
• ai-security
• llm-security
• mcp
• model-context-protocol
• agent-security
• firewall
• guardrails
• jailbreak-detection

How to install @shivdev/agent-warden

@shivdev/agent-warden is published on npm as @shivdev/agent-warden, and it depends on @modelcontextprotocol/sdk. These steps assume it runs as a local stdio server, which is the usual setup.

1. Check the README. Confirm the start command and note any API keys or environment variables it needs (pass them with -e KEY=value or an env block). You need Node.js for npx.
2. Add it to Claude Code from a terminal:

   claude mcp add agent-warden -- npx -y @shivdev/agent-warden

3. Or add it to Cursor or Claude Desktop in .cursor/mcp.json or claude_desktop_config.json:

   {
     "mcpServers": {
       "agent-warden": {
         "command": "npx",
         "args": [
           "-y",
           "@shivdev/agent-warden"
         ]
       }
     }
   }

4. Restart the client and check it. Run claude mcp list, or open the client's MCP settings, and confirm @shivdev/agent-warden and its tools are listed. The install guide covers VS Code and Codex.

Also listed in

• MCP servers for email425
• MCP servers for security testing750

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Data last updated 25 October 2026. Stars and downloads are refreshed every day from GitHub and npm.