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kotlin-sum-types

Parse, don't validate - using sealed classes for type-safe validation and state representation.

Skill by anderssv

IndexedLicense unknown★ 14
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

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About

Parse, don't validate - using sealed classes for type-safe validation and state representation. Model valid/invalid states explicitly, validate at boundaries, operate on valid types internally. Use when implementing validation with sealed classes, modeling valid/invalid states, or applying parse-don't-validate patterns in Kotlin. The pattern is transferrable to other languages, though the mechanism will differ.

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/kotlin-sum-types

What's inside

Skill name
kotlin-sum-types
Description
Parse, don't validate - using sealed classes for type-safe validation and state representation. Model valid/invalid states explicitly, validate at boundaries, operate on valid types internally. Use when implementing validation with sealed classes, modeling valid/invalid states, or applying parse-don't-validate patterns in Kotlin. The pattern is transferrable to other languages, though the mechanism will differ.
License
unknown
Instructions
8 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub

More from anderssv/the-example

Signals

Stars
14
Forks
2
Open issues
0
Last commit (this folder)
Jun 5, 2026 (4 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
License unknown
Repository
github.com/anderssv/the-example
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

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Cite this page

kotlin-sum-types skill. Agent Mart. https://agentmart.dev/skills/anderssv-kotlin-sum-types (last updated 2026-10-24)