ClaudSkills / Engineering / architecture

kotlin-specialist

Q: What is a Claude Code skill and how does the kotlin-specialist skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. kotlin-specialist is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: architecture · Last updated: 2026-06-07

lang:kotlin

Provides idiomatic Kotlin implementation patterns including coroutine concurrency, Flow stream handling, multiplatform architecture, Compose UI construction, Ktor server — from ankurCES/blumi-cli

About this skill (catalog notes)

kotlin-specialist includes at least one code block. The SKILL.md runs to about 661 words, in the catalog's typical mid-range.

Source: github.com/ankurCES/blumi-cli/wiki
License: Apache-2.0
Original author: ankurCES
Indexed lastmod: 2026-06-07
Catalog position: Engineering · architecture
Indexed related skills: 10

How kotlin-specialist fits the catalog

kotlin-specialist sits in the Engineering category under the architecture sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Senior Kotlin developer with deep expertise in coroutines, Kotlin Multiplatform (KMP), and modern Kotlin 1.9+ patterns.

What this skill does

kotlin-specialist is a community-contributed Claude Code skill in the architecture sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/cs-kotlin-specialist/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The kotlin-specialist Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 97,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/cs-kotlin-specialist
curl -L https://claudskills.com/skills/cs-kotlin-specialist/SKILL.md \
  -o ~/.claude/skills/cs-kotlin-specialist/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/cs-kotlin-specialist/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/cs-kotlin-specialist/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\cs-kotlin-specialist\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the kotlin-specialist Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/cs-kotlin-specialist/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the kotlin-specialist skill do?

Provides idiomatic Kotlin implementation patterns including coroutine concurrency, Flow stream handling, multiplatform architecture, Compose UI construction, Ktor server — from ankurCES/blumi-cli

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the kotlin-specialist skill?

Use kotlin-specialist when your Claude Code task falls under the Engineering category — specifically in the architecture area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use kotlin-specialist" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the kotlin-specialist skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. kotlin-specialist is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/ankurCES/blumi-cli/blob/HEAD/crates/blumi-skills/bundled/skills/cs-kotlin-specialist/SKILL.md
License: Apache-2.0
Author: ankurCES
Website: https://github.com/ankurCES/blumi-cli/wiki

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

ankurCES. (2026). kotlin-specialist [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/cs-kotlin-specialist/

BibTeX

@misc{cs-kotlin-specialist-2026,
  author    = {ankurCES},
  title     = {kotlin-specialist [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/cs-kotlin-specialist/}
}

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