# Kato Hiro Atcoderclans Atcoderclans

> Overview

- Skill: `tomevault-io/kato-hiro-atcoderclans-atcoderclans` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/kato-hiro-atcoderclans-atcoderclans`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/kato-hiro-atcoderclans-atcoderclans/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/kato-hiro-atcoderclans-atcoderclans

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## Overview

Validate an AtCoder contest for users who newly reached a rating milestone, and report
blog listing candidates. Both Algorithm and Heuristic divisions are covered.

## Input

```
/milestone-check <contest_id>
```

Examples: `/milestone-check abc399`, `/milestone-check ahc040`

## Process

Read `.claude/skills/milestone-check/instructions.md` and follow Steps 1–5 in order.

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> Source: [KATO-Hiro/AtCoderClans](https://github.com/KATO-Hiro/AtCoderClans) — distributed by [TomeVault](https://tomevault.io).
<!-- tomevault:4.0:skill_md:2026-06-29 -->