Build and modify Ktor services in the Foodies repository using the established project conventions.

Apache-2.0Auto-check passedMobile

Install Ktor

skills CLI
$ npx skills add nomisRev/ktor-arrow-example --skill ktor -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install nomisRev/ktor-arrow-example ktor --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/nomisRev/ktor-arrow-example.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/ktor .claude/skills/ktor && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
ktor
GitHub stars
307
Token cost
~295 tokens
SKILL.md length
86 words
Files
4 (incl. references)
Skills in repo
1
Repo updated
First seen
Licence
Apache-2.0

At a glance

Build and modify Ktor services in the Foodies repository using the established project conventions.

  • Working in Ktor modules for tasks involving Ktor app/module wiring
  • SKILL.md covers Service architecture and wiring, Package structure and Routes and validation
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Route-service-repository design

What it does

Ktor is an agent skill from nomisRev/ktor-arrow-example. Build and modify Ktor services in the Foodies repository using the established project conventions. Use when working in Ktor modules for tasks involving Ktor app/module wiring, route-service-repository design.

Its SKILL.md is about 300 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `references/package-structure.md`, `references/routes-and-validation.md` and `references/service-architecture.md`).

It sits in Mobile, covering Android development. It works with Kotlin and PostgreSQL. The repository describes itself as: Real World implementation - "The mother of all demo apps". Written in Kotlin, with Ktor, Arrow, SqlDelight, KotlinX Serialization, etc. The licence is Apache-2.0.

When your agent uses it

  • Working in Ktor modules for tasks involving Ktor app/module wiring
  • Route-service-repository design

Example prompts

  • “/ktor”

What it can do on your machine

Read from SKILL.md and the folder at commit a39aede. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Ktor loads about 295 tokens when it runs, and up to ~7.8k if it reads all its reference files. Until then it costs about 54 tokens; SKILL.md has 86 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~54
When it runs · the whole SKILL.md, loaded when a task matches
~295
With references · SKILL.md plus every file in references/, read only if the agent opens them
~7.8k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nomisRev/ktor-arrow-example at commit a39aede, republished under its Apache-2.0 licence (© nomisRev). 86 words, ~295 tokens.

Download SKILL.mdSave it as .claude/skills/ktor/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
ktor
description
Build and modify Ktor services in the Foodies repository using the established project conventions. Use when working in Ktor modules for tasks involving Ktor app/module wiring, route-service-repository design.

Ktor Service Skill

Apply these conventions when implementing or reviewing Ktor code in this repository. Load only the references needed for the current task.

Service architecture and wiring

Read references/service-architecture.md when changing application bootstrap (Main.kt/SuspendApp), Env configuration loaded from application.yaml, Dependencies wiring, or ResourceScope-based resource lifecycle.

Package structure

Read references/package-structure.md when creating, moving, or reorganizing files within a service module. Follow domain-driven feature packages, not technical layers.

Routes and validation

Read references/routes-and-validation.md when editing HTTP contracts (Spine Api.kt endpoints), route handlers, DomainError modelling/mapping, or accumulate-based validation.

© nomisRev, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (references) in .agents/skills/ktor of nomisRev/ktor-arrow-example.

  • SKILL.md
  • references/package-structure.md
  • references/routes-and-validation.md
  • references/service-architecture.md

Open the folder on GitHubat commit a39aede

Compare with similar skills

Ktor next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Ktor compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Ktor this skillnomisRev/ktor-arrow-example307—~295Automated safety check: PassApache-2.0
Create Spring Boot Kotlin Projectgithub/awesome-copilot40k1 repos~1kAutomated safety check: PassMIT
Android Hidden API and R8 Checkgkd-kit/gkd43k—~1.5kAutomated safety check: PassGPL-3.0
Build Teaql Appteaql/teaql-agent-kit2.8k—~4.6kAutomated safety check: PassMIT
Compose Multiplatform Patternsmonta-app/ocpp-emulator1805 repos~2kAutomated safety check: PassApache-2.0
Android Developmentdpconde/claude-android-skill336—~1.7kAutomated safety check: PassMIT

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Categories

Questions about Ktor

What does Ktor do?

Build and modify Ktor services in the Foodies repository using the established project conventions. Ktor is an agent skill from nomisRev/ktor-arrow-example. Build and modify Ktor services in the Foodies repository using the established project conventions.

When should I use Ktor?

Ktor fits situations like: working in Ktor modules for tasks involving Ktor app/module wiring; route-service-repository design.

How do I install Ktor in Claude Code?

Run `npx skills add nomisRev/ktor-arrow-example --skill ktor -a claude-code`. Or copy the skill folder (.agents/skills/ktor in nomisRev/ktor-arrow-example) into .claude/skills/ktor in your project. Claude Code loads it when a task matches its description.

How do I install Ktor in Codex?

Run `npx skills add nomisRev/ktor-arrow-example --skill ktor -a codex`. Or copy the skill folder (.agents/skills/ktor in nomisRev/ktor-arrow-example) into .agents/skills/ktor in your project. Codex loads it when a task matches its description.

Can I use Ktor in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nomisRev/ktor-arrow-example --skill ktor -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ktor, .gemini/skills/ktor, .github/skills/ktor and .opencode/skills/ktor in your project.

What does Ktor need to run?

SKILL.md names no scripts, command-line tools or credentials: Ktor is instructions for the agent only.

Does Ktor access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Ktor safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Ktor use?

Ktor is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Ktor use?

About 295 tokens (SKILL.md is roughly 1.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 7.5k tokens, read only when the agent opens those files.

What are the alternatives to Ktor?

Skills that share tags, products or a category with Ktor: Create Spring Boot Kotlin Project (github/awesome-copilot, 40k stars), Android Hidden API and R8 Check (gkd-kit/gkd, 43k stars), Build Teaql App (teaql/teaql-agent-kit, 2.8k stars) and Compose Multiplatform Patterns (monta-app/ocpp-emulator, 180 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Ktor?

nomisRev (a GitHub user) maintains it in nomisRev/ktor-arrow-example, which has 307 GitHub stars. The repository was last updated on October 7, 2026.

Source: nomisRev/ktor-arrow-example on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.