MCP Lockdown

Name: MCP Lockdown
Author: leecrossley

mcp-lockdown · by leecrossley

Strict TypeScript library for Model Context Protocol (MCP) tool manifest pinning, schema enforcement, and policy vetos.

2 4/wk 14 tools GitHub npm

No known CVEs

MIT license

Stale

Last commit 382d ago

Works with most clients

Transport: stdio, sse, http

14 tools · ~536 tok

Grade B · 0.3% of 200K ctx

MCPpedia last refreshed this data 3h ago

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MCP Lockdown is an MCP server that strict TypeScript library for Model Context Protocol (MCP) tool manifest pinning, schema enforcement, and policy vetos. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 71/100 on MCPpedia's security, maintenance and efficiency rubric.

Security Developer Tools

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

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

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

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What Mcp Lockdown does

Lockdown is a tool that prevents MCP server tools (intended to allow agents to access external functionality/data) from causing undesirable side effects (Impacting the way other tools run, exfiltrating data on the client machine, etc.).

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'mcp-lockdown' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

71/100across 5 weighted dimensions

How we score →

0255075100

−29

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked mcp-lockdown against OSV.dev.

Inventory

Tools (14)

Click any tool to inspect its schema.

~536 tokens total

Community

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Frequently Asked Questions

Is Mcp Lockdown safe to use?: Mcp Lockdown has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Mcp Lockdown?: Mcp Lockdown supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can Mcp Lockdown do?: Mcp Lockdown provides 14 tools: Centralisation, hasDescription, noFilesystem, noExec, noEval and 9 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Mcp Lockdown?: Mcp Lockdown is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Mcp Lockdown actively maintained?: Mcp Lockdown is not actively maintained — last commit was 382 days ago. It has 2 GitHub stars.

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Community

Discussion

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Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Frequently Asked Questions

Is Mcp Lockdown safe to use?

Mcp Lockdown has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install Mcp Lockdown?

Mcp Lockdown supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can Mcp Lockdown do?

Mcp Lockdown provides 14 tools: Centralisation, hasDescription, noFilesystem, noExec, noEval and 9 more. See the full tools list on the server page for descriptions and parameters.

What AI clients work with Mcp Lockdown?

Mcp Lockdown is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is Mcp Lockdown actively maintained?

Mcp Lockdown is not actively maintained — last commit was 382 days ago. It has 2 GitHub stars.