Lazaretto MCP Server

Verify a skill, tool, or package for malicious behavior before your agent installs it. Hosted.

Remote serverstreamable-http

What is the Lazaretto MCP Server?

Verify a skill, tool, or package for malicious behavior before your agent installs it. Hosted.

What the server does

Checks every exactly-pinned dependency in your lockfile against published malicious-package advisories. Reads package-lock.json, yarn.lock, or pnpm-lock.yaml from the working directory, so the agent never has to paste a lockfile through its context. One call covers the whole tree.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

How to install the Lazaretto MCP Server

{
  "mcpServers": {
    "lazaretto": {
      "url": "https://lazaretto.dev/mcp",
      "headers": {
        "X-API-Key": "your-prepaid-key (optional; known_bad_lookup is free)"
      }
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

VariableDescriptionRequired
LAZARETTO_API_KEYCredential the server authenticates with.Yes
LAZARETTO_BASE_URLEndpoint or connection string the server talks to.Yes

Frequently asked questions

Verify a skill, tool, or package for malicious behavior before your agent installs it. Hosted. Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.