What is kotlin-development?

A toolkit for idiomatic Kotlin development, covering Android, server, and multiplatform applications. Kotlin is a programming language; the toolkit includes concurrency, reactive data streams, Compose, Ktor, databases, WebSockets, and Kotlin language patterns.

Use it for Kotlin coroutines, Flow, Kotlin Multiplatform, Android Compose interfaces, Ktor servers, database access, WebSockets, and type-safe DSLs.

It provides Kotlin-specific guidance for common application architectures and language features. This helps avoid treating Kotlin code like code written in another language or framework.

kotlin-development — Plugin for Claude Code by acaprino

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/acaprino/daodan

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/acaprino/daodan/kotlin-development/github.svg)](https://agentmods.dev/plugins/acaprino/daodan/kotlin-development)

Your own site

<a href="https://agentmods.dev/plugins/acaprino/daodan/kotlin-development"><img src="https://agentmods.dev/badge/plugins/acaprino/daodan/kotlin-development/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/acaprino/daodan/kotlin-development"><img src="https://agentmods.dev/badge/plugins/acaprino/daodan/kotlin-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 1 skill cost 112 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

kotlin-development scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

exports/claude/plugins/kotlin-development/.claude-plugin/plugin.json · 10 lines

What it actually says

{
  "author": {
    "name": "Alfio Caprino"
  },
  "description": "Idiomatic Kotlin development toolkit - kotlin-specialist skill covering coroutines and structured concurrency, Flow / StateFlow / SharedFlow, Kotlin Multiplatform (KMP) with expect/actual, Jetpack Compose on Android, Ktor server (routing, JWT auth, Exposed, WebSockets), and type-safe DSL idioms (lambdas with receivers, delegated properties, inline reified, value classes). Vendored from Jeffallan/claude-skills (MIT).",
  "license": "MIT",
  "name": "kotlin-development",
  "version": "1.1.0"
}

Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 112 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Skill kotlin-specialist A 112 tokens

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

7d ago First seen · 10 lines scan A 5a2746c6e16e

Subscribe to this mod's changes

kotlin-development is a plugin published in the GitHub repository acaprino/daodan (9 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.

Backend and APIs Languages

quarkus-appdev

Skills for developing and maintaining Quarkus applications.

quarkusio/skills · not measured

fuse-php

Expert modern PHP 8.5/8.4 for non-Laravel projects — libraries, standalone Symfony components, Slim, API-first apps, and CLI tools, with PER Coding Style 3.0, PHPStan, and SOLID principles.

fusengine/agents · not measured

rails-consultant marketplace

Plugin marketplace listing 1 plugin: rails-consultant.

thoughtbot/rails-consultant · not measured

rails-consultant

A collection of skills for Rails development and consulting, with an emphasis on learning, communication, and client success.

thoughtbot/rails-consultant · not measured

spring-boot-3-skills

33 Spring Boot 3, Framework 6, security, messaging, deployment, Spring AI, and MCP skills.

rrezartprebreza/spring-boot-skills · not measured

trabuco

Conversational Java/Spring Boot project generation, extension, and migration. Exposes the Trabuco CLI's architecture advisor, module catalog, scaffolding (including dormant-by-default OIDC Resource Server auth for API/AIAgent), and the orchestrated 14-phase migration of legacy Spring Boot 2.x/3.x repos inside Claude…

arianlopezc/Trabuco · not measured