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Cors Audit

Checked
psylch·vlatest·security·MIT

Scans web resources for CORS misconfigurations, identifying potential security vulnerabilities and unauthorized access risks.

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 psylch/cors-audit-skill --skill cors-audit -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

psylch

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 psylch/cors-audit-skill at 37534d683b.

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

Commit
37534d683b
Manifest
skills/cors-audit/SKILL.md
Scanned
5 files, 1,539 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

The cors-audit skill performs a Cross-Origin Resource Sharing (CORS) audit on specified URLs. It checks if resources are properly configured to allow cross-origin requests, identifying potential security vulnerabilities and compliance issues. The tool provides detailed reports outlining allowed origins and any detected misconfigurations.

When to use it

  • Security Assessment: Before deploying a web application that relies on cross-origin resource sharing, verify its CORS configuration.
  • Troubleshooting API Access: Diagnose why your frontend application is unable to access an API due to CORS restrictions.
  • Compliance Checks: Ensure adherence to security best practices and relevant regulations regarding cross-origin requests.
  • Identifying Misconfigurations: Quickly identify unintentional or overly permissive CORS settings that could expose sensitive data.

Key capabilities

  • CORS configuration auditing
  • Detailed reporting of allowed origins
  • Identification of potential vulnerabilities related to CORS misconfiguration

Example prompts

  • "Audit the CORS configuration for https://example.com/api."
  • "Check if https://mywebapp.net allows requests from https://frontend.app."
  • "Perform a full CORS audit on all endpoints listed in this file: [file contents]"

Tips & gotchas

The skill requires the ability to make HTTP requests, so ensure your AI agent has appropriate network access and permissions. The accuracy of the results depends on the target server's response headers; some servers may not provide complete or accurate CORS information.