Is Helmet safe and trustworthy?

tashan scores Helmet on public evidence — tashan score 35.0/100, it is currently active, note: a single primary maintainer (bus-factor risk), no known advisories against the current release. Audit scope: OSV advisories, install-time scripts, build provenance and declared permission surface. We do not review source code or execute the capability.

How do I install Helmet?

In Claude Code: run `claude mcp add helmet -- npx -y mcp-helmet`. In Cursor / Claude Desktop, add it to mcp.json / claude_desktop_config.json.

Who maintains Helmet?

source: ankitvirdi4/mcp-helmet.

‹ The Index

Helmet

npm

Production middleware for MCP servers. Auto transport, content wrapping, health checks, graceful shutdown, auth, rate limiting, structured request logging. Wraps the official Model Context Protocol SDK.

Works with: Claude Code, Cursor, Claude Desktop, Codex CLI, Gemini CLI, Cline, Windsurf, VS Code (installable)
installable: each client documents how to load an MCP server of this type — that is the client's promise, not a claim verified against this capability

Category: Dev Tools & CI — see all ranked ›

Install (Claude Code):

claude mcp add helmet -- npx -y mcp-helmet

tashan score: 35.0
Adoption: 20/wk
Upkeep: 51.0
Freshness: 69.0
Evidence coverage: 100% of the inputs this score can use
Health: active

Security audit

Every finding is shown in full — which advisory, the version that fixes it, and the exact command run at install time. Nothing in this audit is behind a licence.

No known advisoriesclearchecked against OSV for 0.1.0-alpha.7

No access inferred from declared dependenciesnothing it depends on reaches files, shell or network. This reads declarations only — built-in APIs are invisible to it, so absence of a declaration is not absence of access

No build provenanceno attestation — the published artifact cannot be traced to its source

You searched for one. Check the rest of your stack:

npx tashan-cli doctor

Reads the config already on your machine and names what is dead, deprecated or running code at install time. No account, nothing uploaded.

tashan Pro$6/mo

Helmet scores 35 today. Pro keeps the series, so you can see whether that is a project getting better or one on its way down — and tells you the day it moves.

Every score since we started measuring, for any capability
The named replacement when something you run is dying — not just that it is
tashan doctor over the config you already have, on your machine

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Measured this well? Put the live badge in your README — it updates as the score does.

[![tashan](https://tashan.sh/badge/pkg-mcp-helmet.svg)](https://tashan.sh/capability/pkg-mcp-helmet.html)

npm ↗ · source ↗ · pkg:mcp-helmet

Everything on this page is public evidence and free. What it cannot know is whether you run this — npx tashan-cli doctor reads your own config and names what is wrong in it, also free. tashan Pro tells you the day any of it changes.

Already running this? npx tashan-cli doctor checks your whole config against the Index — how it works ›

Measured 2026-08-14 · scorer s5 · how · something wrong here?