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CORS policy validation v1.0.0

Use this resource to validate the CORS policy of an API

New

  • 472 downloads
  • 239 likes
  • 162 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install cors-policy-validation

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent reviews your CORS configuration and flags origins, methods or headers that are too permissive. You get a step-by-step method with examples and error handling.

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Updated November 2, 2026

Card for the “CORS policy validation” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: policy-checking steps
  • SKILL.md: examples and error handling

Good fit for

  • Your API accepts requests from any site
  • Your front end gets CORS errors in production

Not for

    Tags

    • cors
    • api
    • security
    • browser

    About

    You say

    “Check my CORS configuration and tell me whether it allows origins I did not intend.”

    Card for the “CORS policy validation” skill

    Skill published by Jeremy Longshore <jeremy@intentsolutions.io> under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to validate the CORS policy of an API
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.6 KB
    • SKILL.md2.4 KB

    Origin and licence

    Listed unmodified

    Author
    Jeremy Longshore <jeremy@intentsolutions.io>
    Source
    github.com/jeremylongshore/tons-of-skills-marketplace/tree/ab85a061f7bcc039dac13ee193de7a4cd4388571/skills/03-security-fundamentals/cors-policy-validator
    Licence
    MIT

    Notice

    « cors-policy-validator » (Jeremy Longshore <jeremy@intentsolutions.io>, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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