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Concentrating checks at system boundaries v1.0.0

Use this resource to place validation at the boundaries instead of everywhere

New

  • 516 downloads
  • 246 likes
  • 110 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install validate-only-at-system-boundaries

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 checks inputs at the system's edges, then trusts internal types. Business logic stays in pure functions that can be tested without the framework.

Mostly picked by

Updated November 2, 2026

Card for the “Concentrating checks at system boundaries” skill

Details

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

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What you get

  • SKILL.md: rules for boundary validation and internal trust
  • SKILL.md: the principle of a thin wiring layer around pure logic

Good fit for

  • The same check is repeated across several functions
  • Business rules are mixed into framework code

Not for

    Tags

    • validation
    • architecture
    • boundaries
    • pure-functions

    About

    You say

    “Review this handler: move the validation to the boundary and keep the business logic pure.”

    Card for the “Concentrating checks at system boundaries” skill

    Skill published by backnotprop 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 place validation at the boundaries instead of everywhere
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md1.9 KB

    Origin and licence

    Listed unmodified

    Author
    backnotprop
    Source
    github.com/backnotprop/pstack/tree/23707a30f9cd2f12edef61f2506e2222e30b35aa/skills/principle-boundary-discipline
    Licence
    MIT

    Notice

    « principle-boundary-discipline » (backnotprop, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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