What is geolonia-agent-skills CLAUDE.md?

A set of Claude Code instructions for developing map applications with Geolonia Maps, including its map embedding, JavaScript, address, and styling guidance.

Use it when asking Claude Code to add or modify Geolonia Maps features, such as embedded maps, markers, GeoJSON layers, geocoding, address normalization, or map styles.

It gives the coding agent project-specific rules and reference material for generating Geolonia map code consistently.

How geolonia/geolonia-agent-skills configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to geolonia/geolonia-agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/geolonia/geolonia-agent-skills/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/geolonia/geolonia-agent-skills

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/instructions/geolonia/geolonia-agent-skills/claude-md/github.svg)](https://agentmods.dev/instructions/geolonia/geolonia-agent-skills/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/geolonia/geolonia-agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/geolonia/geolonia-agent-skills/claude-md/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/instructions/geolonia/geolonia-agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/geolonia/geolonia-agent-skills/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 664 This file is loaded in full into every session.

When invoked 664 The same file — it is already loaded in full.

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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00664	$0.00664
Opus 5.5	$0.00266	$0.00266
Sonnet 5.5	$0.00133	$0.00133
Haiku 4.5	$0.00066	$0.00066

Measured 2mo ago against content hash e43f1cd5a3a8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

geolonia-agent-skills CLAUDE.md 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 2mo 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.

CLAUDE.md · 39 lines

What it actually says

Geolonia Skill

目的

Geolonia Maps を使った地図アプリの開発を Claude Code で支援するためのプラグイン。 Geolonia Maps の Embed API、JavaScript API、ジオコーディング、マップスタイルなどの知識を Claude に提供し、正確なコード生成を可能にする。

構成

.claude-plugin/
└── plugin.json                # プラグイン定義（名前・バージョン・著者）
skills/
├── maps/
│   ├── SKILL.md               # メインスキル定義（自動呼び出し条件 + 基本原則）
│   ├── embed-api.md           # Embed API リファレンス（data-* 属性一覧）
│   ├── javascript-api.md      # JavaScript API リファレンス
│   ├── geocoding.md           # ジオコーディング（住所↔座標変換・住所正規化）
│   ├── styles.md              # マップスタイル一覧とカスタマイズ
│   └── examples.md            # よくあるパターンのコード例
└── geolonia-google-maps-migration/
    ├── SKILL.md               # Google Maps → @geolonia/maps-suite 移行手順 + 振り返り
    ├── AGENTS.md              # 凝縮版クイックリファレンス
    └── references/            # 既知のギャップ・API差異・回避策の実装例

方針

セットアップは CDN 埋め込みに統一（npm install は使わない）。ただし geolonia-google-maps-migration は @geolonia/maps-suite の npm パッケージ利用が前提（Google Maps からの移行元コードが npm ベースであることが多いため）
SKILL.md は軽量に保ち、詳細は参照ファイルに分離する
Geolonia Maps は MapLibre GL JS の拡張であることを前提とする
@geolonia/maps-suite の既知の未実装機能・互換性バグはライブラリ側の課題管理で追跡し、解消されるまで geolonia-google-maps-migration/references/known-gaps.md に回避策を明記する。 このリポジトリは public なので、非公開リポジトリの issue 番号・URL・内部パスは書かない
@geolonia/maps-suite はリリースごとに Google Maps 互換の範囲が広がる。バージョンが上がったら移行スキルの記述と回避策を追随させる（対象バージョンを明記する）

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.

2mo ago First seen · 39 lines · 664 tokens per session scan A e43f1cd5a3a8

Subscribe to this mod's changes

geolonia-agent-skills CLAUDE.md is an instructions file published in the GitHub repository geolonia/geolonia-agent-skills (2 stars, last pushed 16d ago), licensed MIT. It adds 664 tokens to every session, about $0.0027 per session on Opus 5.5. 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.

Frontend

geolonia-agent-skills CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
geolonia-agent-skills CLAUDE.mdgeolonia/geolonia-agent-skills	Instructions file	2	16d ago	MIT	A	664	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

geolonia-agent-skills: Instructions file for Claude Code