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Multi-layer validation v1.0.0

Use this resource to validate data at every layer so that an error becomes structurally impossible

New

  • 490 downloads
  • 240 likes
  • 234 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install layered-input-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 adds validation at each layer data passes through: entry, business logic, environment guards and debugging. You get a fix that does not rely on a single check that can be bypassed.

Mostly picked by

Updated November 2, 2026

Card for the “Multi-layer validation” skill

Details

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

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What you get

  • SKILL.md : the four layers and their roles
  • SKILL.md : applying the pattern, a worked example and the link to security

Good fit for

  • Invalid data causes a failure far from where it entered
  • A previous fix was bypassed by another code path

Not for

    Tags

    • validation
    • defense in depth
    • data
    • robustness

    About

    You say

    “An empty address breaks the delivery calculation. Add validation at each relevant layer.”

    Card for the “Multi-layer validation” skill

    Skill published by secondsky 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 data at every layer so that an error becomes structurally impossible
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md5.4 KB

    Origin and licence

    Listed unmodified

    Author
    secondsky
    Source
    github.com/secondsky/claude-skills/tree/88378361314f558fb719aec0af9fd898ab36f0b2/plugins/defense-in-depth-validation/skills/defense-in-depth-validation
    Licence
    MIT

    Notice

    « defense-in-depth-validation » (secondsky, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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