setup

setup is a skill for Claude Code, Codex from OleksandrHavuka/shadowling. It costs 39 tokens per session (349 once invoked), scanned A, original, AGPL-3.0.

A setup command for Shadowling's language-learning system, which separates your native language, the language you are studying, and the language used for corrections.

In plain words
What is it for?
Use `/shadowling:setup` before your first Shadowling session to define its three languages.
Why use it?
It provides the language settings required before the system can be used.

Skill for Claude CodeCodex

Part of the shadowling plugin — 8 skills, 2 hooks shipped together

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.

agentmods
npx agentmods add skills/oleksandrhavuka/shadowling/setup
Any agent
npx skills add OleksandrHavuka/shadowling --skill setup
Clone the repo
git clone --depth 1 https://github.com/OleksandrHavuka/shadowling

Made for: Claude Code, Codex.

Or install shadowling, the plugin that ships this one along with the rest of its 8 skills, 2 hooks.

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.

agentmods badge for setup

README.md
[![agentmods](https://agentmods.dev/badge/skills/oleksandrhavuka/shadowling/setup.svg)](https://agentmods.dev/skills/oleksandrhavuka/shadowling/setup)
Your own site
<a href="https://agentmods.dev/skills/oleksandrhavuka/shadowling/setup"><img src="https://agentmods.dev/badge/skills/oleksandrhavuka/shadowling/setup.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 349 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00039 $0.00349
Opus 5 $0.00019 $0.00175
Sonnet 5 $0.00008 $0.00070
Haiku 4.5 $0.00004 $0.00035

Measured 3d ago against content hash dfdb9f30ad6b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

setup 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 3d 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.

plugins/shadowling/skills/setup/SKILL.md · 29 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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.

  1. 3d ago First seen · 29 lines · 39 tokens per session scan A dfdb9f30ad6b

Subscribe to this mod's changes

setup is a skill published in the GitHub repository OleksandrHavuka/shadowling (2 stars, last pushed 2mo ago), licensed AGPL-3.0. It adds 39 tokens to every session and 349 once invoked, about $0.0002 per session on Opus 5. 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 2026-08-31.

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