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Kotlin Sum Types

Checked
anderssv·vlatest·backend

Generate Kotlin sealed classes/data objects representing sum types from natural language descriptions for robust data modeling.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add anderssv/the-example --skill kotlin-sum-types -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

anderssv

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Install target

Live repository

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No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

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  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned anderssv/the-example at 82b9148621.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
82b9148621
Manifest
skills/domain/kotlin-sum-types/SKILL.md
Scanned
1 file, 12 lines
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About this skill

What it does

This skill allows AI agents to generate and understand Kotlin sum types, also known as sealed classes. It can create data structures that represent a fixed set of possibilities, ensuring type safety and simplifying logic around handling different states or outcomes. The agent will produce valid Kotlin code implementing these sum types based on provided descriptions.

When to use it

  • Representing application state: Define the possible states of a UI element (e.g., Loading, Success, Error).
  • Handling API responses: Model different response scenarios from an external API call (e.g., ValidData, NotFound, ServerError).
  • Creating command patterns: Represent various commands that can be executed in a system, each with its own specific data or behavior.
  • Defining result types: Represent the outcome of a function which might succeed with a value or fail with an error.

Key capabilities

  • Generates Kotlin sum type definitions (sealed classes).
  • Understands natural language descriptions of sum types.
  • Produces valid and compilable Kotlin code.

Example prompts

  • "Create a Kotlin sum type representing the possible outcomes of a database query: Success(data), NotFound, and Error(message)."
  • "Generate a sealed class for UI states: Loading, ContentLoaded(data), Empty."
  • “Define a sum type to represent different payment methods: CreditCard(cardNumber), PayPal(email).”

Tips & gotchas

  • The agent requires familiarity with Kotlin syntax and concepts. Providing context about the desired data structure's purpose will improve results.