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Design with explicit contracts v1.0.0

Use this resource to make the preconditions, postconditions and invariants of a component explicit

New

  • 363 downloads
  • 137 likes
  • 188 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install design-explicit-function-contracts

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 classifies each input, states the routine's contract and places the checks where the error should be caught. You get a written contract and the guards to add to the code.

Mostly picked by

Updated November 2, 2026

Card for the “Design with explicit contracts” skill

Details

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

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What you get

  • SKILL.md: boundary classification, contract writing and check placement
  • SKILL.md: anti-patterns and quick reference

Good fit for

  • You design a function or class with sensitive inputs
  • You harden the boundary of an API or a module

Not for

    Tags

    • contracts
    • assertions
    • invariants
    • design

    About

    You say

    “Define the contract of the discount function: preconditions and postconditions.”

    Card for the “Design with explicit contracts” skill

    Skill published by laurigates 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 make the preconditions, postconditions and invariants of a component explicit
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md5.8 KB

    Origin and licence

    Listed unmodified

    Author
    laurigates
    Source
    github.com/laurigates/claude-plugins/tree/3cbda15de062aa6d3302afd330afb0ff1c8979df/software-design-plugin/skills/design-by-contract
    Licence
    MIT

    Notice

    « design-by-contract » (laurigates, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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