Agent Firewall MCP Server

by mlawsonking Your server? Claim it

local only

Agent Firewall MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 107 installs a week from npm. Last commit 1 Nov 2026.

Input/output safety for AI agents: known-pattern injection and obfuscation scan, URL/IP, secrets.

Installs per day peak 20 · avg 8 · +7% w/w

a month agotoday

107

Installs / week

npm · agent-firewall-mcp

Stars

0 open issues

1 Nov 2026

Last commit

2 releases in 90 days

MIT

License

JavaScript

What the code does

We read the source, 23 h ago · rules 995398eba69f

In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

Runs an external command agent-guards-plugin/core/cli/exec.js:35, agent-guards/cli/exec.js:32

    const r = spawnSync(comspec, ['/d', '/s', '/c', line], {

Page executes code built at runtime code-guard/index.html:102, email-guard/index.html:131, package-guard/index.html:127

    out.innerHTML = head + "\n\n" + JSON.stringify(j,null,2);

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Nothing serious here today

Today is the operative word: we check Agent Firewall MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add agent-firewall-mcp -- npx -y agent-firewall-mcp

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

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

~/.codex/config.toml

[mcp_servers.agent-firewall-mcp]
command = "npx"
args = ["-y", "agent-firewall-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "agent-firewall-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "agent-firewall-mcp"
      ]
    }
  }
}

Alternatives to Agent Firewall MCP

same job, measured the same way

Email Guard MCP

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1Claw Vault

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HSM-backed vault secrets for AI agents (JIT fetch) plus prompt-injection and threat scanning.

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AI Code Scanner

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AI Code Scanner

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Agent Firewall MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Agent Firewall MCP?

Agent Firewall MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package agent-firewall-mcp was installed 107 times last week.

How do I connect Agent Firewall MCP?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls agent-firewall-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Agent Firewall MCP?

The npm package agent-firewall-mcp was installed 107 times in the last week. Week over week that is +7%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Agent Firewall MCP open source?

Yes — it is published under the MIT licence, written in JavaScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.