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Validation at every layer to prevent bugs v1.0.0

Use this resource to add validation at every layer so the bug becomes structurally impossible

New

  • 516 downloads
  • 204 likes
  • 135 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install validation-every-layer

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

After a bug caused by invalid data, the agent adds checks at several levels: entry point, business logic, environment guards and debug instrumentation. You get a fix that also covers the code paths that bypass the first check.

Mostly picked by

Updated November 2, 2026

Card for the “Validation at every layer to prevent bugs” 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 validation layers and their roles
  • SKILL.md: a worked session example and how to apply the rule

Good fit for

  • A data bug was fixed in one place and comes back elsewhere
  • Several code paths write the same data

Not for

    Tags

    • validation
    • robustness
    • bugs
    • defense in depth

    About

    You say

    “A bug let a negative amount through in orders: add validation at every layer.”

    Card for the “Validation at every layer to prevent bugs” skill

    Skill published by practicalswan 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 add validation at every layer so the bug becomes structurally impossible
    3. Review and adjust the result

    Content preview

    Files

    • CHANGELOG.md4.2 KB
    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md6.3 KB

    Origin and licence

    Listed unmodified

    Author
    practicalswan
    Source
    github.com/practicalswan/agent-skills/tree/6cf63517700aa9ba0b80e711a93837e3bea13d0a/defense-in-depth
    Licence
    MIT

    Notice

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

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