Koskamo

Lazaretto MCP

Lazaretto MCP provides pre-install verification for npm packages, agent skills, and MCP servers to detect malware and tool poisoning. It offers free lockfile checks against published advisories and paid behavioral scans with file-and-line evidence, returning signed attestations that agents can verify offline without executing scanned code.

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Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Lazaretto MCP logo, by Meridian Bridge Advisors LLCCommunity listingLocal stdioSource reviewed; not executedPublished by Meridian Bridge Advisors LLC
You need:The lockfile check is free and needs no accountpaid, one creditmint a free developer key (10 full scans per day, refills daily, no card)
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Popularity 1 GitHub star

What you can do with it

  • Check npm lockfiles for known malware before installation
  • Scan MCP server tool definitions for poisoning
  • Verify package identity against advisory corpus
  • Generate signed attestations for security audits

Source and maintenance

Community listingRegistry 1.3.0MIT
mcp-registry: io.github.jamesdfinance-dev/lazaretto@1.3.0Source repositoryProject website
Last repository push
Latest release
v1.1.0
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

lazaretto-mcp 0.6.0

npmnpx
lazaretto-mcp package definition
{
  "version": "0.6.0",
  "transport": "stdio",
  "identifier": "lazaretto-mcp",
  "runtimeHint": "npx",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "LAZARETTO_API_KEY",
      "description": "Optional. A Lazaretto key holding scan credits, used only by the paid tools. The free tools work without it. Buy credits at https://lazaretto.dev/buy."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · repository · passed · metadata changed · updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "lazaretto-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "lazaretto-mcp@0.6.0"
      ],
      "env": {
        "LAZARETTO_API_KEY": "<YOUR_LAZARETTO_API_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "lazaretto-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "lazaretto-mcp@0.6.0"
      ],
      "env": {
        "LAZARETTO_API_KEY": "<YOUR_LAZARETTO_API_KEY>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "lazaretto-mcp-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "lazaretto-mcp@0.6.0"
      ],
      "env": {
        "LAZARETTO_API_KEY": "<YOUR_LAZARETTO_API_KEY>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "lazaretto-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "lazaretto-mcp@0.6.0"
      ],
      "env": {
        "LAZARETTO_API_KEY": "<YOUR_LAZARETTO_API_KEY>"
      }
    }
  }
}

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