home / skills / ehtbanton / claudeskillsrepo / helmet-config-generator

helmet-config-generator skill

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This skill generates a complete Helmet.js security configuration for Express applications, ensuring comprehensive headers and protection right away.

npx playbooks add skill ehtbanton/claudeskillsrepo --skill helmet-config-generator

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Files (2)

SKILL.md

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---
name: helmet-config-generator
description: Generate Helmet.js security middleware configuration for Express applications. Triggers on "create helmet config", "generate helmet configuration", "express security headers", "helmet setup".
---

# Helmet Config Generator

Generate Helmet.js configuration for comprehensive Express security headers.

## Output Requirements

**File Output:** `helmet.ts` or security middleware configuration
**Format:** Valid TypeScript
**Standards:** Helmet 7.x

## When Invoked

Immediately generate a complete Helmet configuration with security headers.

## Example Invocations

**Prompt:** "Create Helmet config for production API"
**Output:** Complete Helmet middleware with all security headers.

Overview

This skill generates a ready-to-use Helmet.js security middleware configuration for Express applications in TypeScript. It produces a single file (helmet.ts) compatible with Helmet 7.x and tailored for production-ready security headers. The output is a complete, importable middleware that integrates into existing Express apps.

How this skill works

On trigger it emits a TypeScript file implementing Helmet configuration with recommended header policies (CSP, HSTS, X-Frame-Options, Referrer-Policy, etc.). The config balances strict security defaults with practical allowances for common API and web app needs, and includes comments and type-safe exports for easy integration. It assumes Express and Helmet 7.x installed and can be copied directly into codebases.

When to use it

Bootstrapping security headers for a new Express API or web app
Hardening an existing Express application for production
Creating a standard middleware file to share across projects
Quickly generating a Helmet config that targets Helmet 7.x and TypeScript
Ensuring consistent security header usage across environments

Best practices

Use stricter policies (CSP, HSTS) in production while allowing relaxed settings in development
Review Content-Security-Policy directives to allow only trusted sources and inline exceptions via nonces or hashes
Test headers with tools like securityheaders.com and report-uri/Observatory for CSP violations
Log or monitor CSP violations in staging before enforcing in production
Keep dependencies up to date and re-run generation when Helmet major versions change

Example use cases

Generate helmet.ts for a production REST API that serves JSON only, disabling unnecessary frame and content policies
Create a middleware file for a server-rendered web app that requires a strict CSP with script nonces
Produce an Express security middleware to standardize headers across microservices
Quickly add recommended security headers to a TypeScript Express starter template
Generate a baseline config to iterate from when hardening an app after a security review

FAQ

Does the output work with Helmet 7.x?

Yes — the generated TypeScript config targets Helmet 7.x APIs and types.

Can I adjust CSP for inline scripts?

Yes — the generated file includes guidance for using nonces or hashes and places to inject dynamic values.

Will this break APIs that serve only JSON?

No — the configuration can be tailored to relax CSP and content-type restrictions for JSON-only endpoints, and the file includes toggles for API use.