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Security Headers Configuration

Checked
aj-geddes·vlatest·security·MIT

Automatically configure essential HTTP security headers to mitigate common web vulnerabilities.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add aj-geddes/useful-ai-prompts --skill security-headers-configuration -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

aj-geddes

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned aj-geddes/useful-ai-prompts at 3f5182cfd7.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
3f5182cfd7
Manifest
skills/security-headers-configuration/SKILL.md
Scanned
7 files, 526 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill configures HTTP security headers to harden web applications against common attacks like Cross-Site Scripting (XSS) and Clickjacking. It automatically generates and applies the correct header values based on your specific application context and requirements.

When to use it

  • Production Deployment: Immediately after launching a new website or API to establish a baseline security posture.
  • Compliance Audits: Preparing infrastructure for security reviews that require evidence of implemented defense-in-depth strategies.
  • Legacy Modernization: Updating older applications that lack native support for modern browser security directives.
  • Third-Party Integration: Ensuring external services or embedded content adhere to strict security policies before they are exposed to users.

Key capabilities

  • Generates standard security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  • Tailors header configurations dynamically based on the detected application type (e.g., SPA, API, static site).
  • Validates current header settings to identify missing or misconfigured directives.
  • Provides actionable recommendations for fixing identified security gaps without manual code editing.

Example prompts

  • "Configure HTTP security headers for my React application hosted on Netlify to prevent XSS attacks."
  • "Audit my existing server configuration and suggest the best security headers for a Python Flask API."
  • "Generate a comprehensive list of security headers I should implement for an e-commerce site handling sensitive user data."

Tips & gotchas

Ensure your web server or framework supports the specific headers you are configuring, as some older environments may not recognize newer directives like Cross-Origin-Opener-Policy. Always test header implementation in a staging environment first to verify browser compatibility and ensure they do not inadvertently break legitimate functionality like iframe embedding for analytics.