lazaretto

lazaretto is a plugin for Gemini CLI from jamesdfinance-dev/lazaretto-mcp. Its token cost is not measured, scanned A, original, MIT.

A remote security checker for software packages, MCP servers, and agent skills before installation. MCP servers are services that give an agent extra tools; this one checks them and searches for available servers.

In plain words
What is it for?
Use it to check lockfiles and package versions, look up known-bad items, verify attestations, and find MCP servers.
Why use it?
It helps reduce the chance of installing known-malicious software or connecting an agent to an unsafe service.

Plugin for Gemini CLI

Written for Gemini CLI: a Gemini CLI extension manifest. Also seen: mentions Gemini CLI.

Good fit Use it to check lockfiles and package versions, look up known-bad items, verify attestations, and find MCP servers.

Compare 6 plugins from other repositories ↓
Install with agentmods
npx agentmods add plugins/jamesdfinance-dev/lazaretto-mcp/gemini-extension
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/jamesdfinance-dev/lazaretto-mcp

Made for: Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for lazaretto

README.md
[![agentmods](https://agentmods.dev/badge/plugins/jamesdfinance-dev/lazaretto-mcp/gemini-extension/github.svg)](https://agentmods.dev/plugins/jamesdfinance-dev/lazaretto-mcp/gemini-extension)
Your own site
<a href="https://agentmods.dev/plugins/jamesdfinance-dev/lazaretto-mcp/gemini-extension"><img src="https://agentmods.dev/badge/plugins/jamesdfinance-dev/lazaretto-mcp/gemini-extension/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for lazaretto

Your own site · 80×15
<a href="https://agentmods.dev/plugins/jamesdfinance-dev/lazaretto-mcp/gemini-extension"><img src="https://agentmods.dev/badge/plugins/jamesdfinance-dev/lazaretto-mcp/gemini-extension.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

lazaretto scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

gemini-extension.json · 13 lines

What it actually says

{
  "name": "lazaretto",
  "version": "0.6.6",
  "description": "Check a package, MCP server or agent skill before your agent installs it: free lockfile malware check, known-bad lookups, and a finder for MCP servers.",
  "mcpServers": {
    "lazaretto": {
      "httpUrl": "https://lazaretto.dev/mcp?ref=gemini",
      "timeout": 120000
    }
  },
  "contextFileName": "GEMINI.md"
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago Changed 1af860d84675
  2. 5d ago Changed 6bea77a867fb
  3. 6d ago First seen · 13 lines scan A 0ecd962fce76

Subscribe to this mod's changes

lazaretto is a plugin published in the GitHub repository jamesdfinance-dev/lazaretto-mcp (1 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-02.

Related

lazaretto compared with plugins from other repositories

lazaretto next to 6 plugins from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
lazarettojamesdfinance-dev/lazaretto-mcpPlugin13d agoMITA—Gemini CLI
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wikimothjuliangeymonat-jpg/wikimothPlugin84mo agoApache-2.0A—Claude Code
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humanizerblader/humanizerPlugin66k11d agoMITA—Claude Code