Borrowing it
Nothing to install: this file belongs to bitbankinc/bitbank-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/bitbankinc/bitbank-mcp-server/main/CLAUDE.mdgit clone --depth 1 https://github.com/bitbankinc/bitbank-mcp-serverWrote 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.
[](https://agentmods.dev/instructions/bitbankinc/bitbank-mcp-server/claude-md)<a href="https://agentmods.dev/instructions/bitbankinc/bitbank-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/bitbankinc/bitbank-mcp-server/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.
<a href="https://agentmods.dev/instructions/bitbankinc/bitbank-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/bitbankinc/bitbank-mcp-server/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00716 | $0.00716 |
| Opus 5 | $0.00358 | $0.00358 |
| Sonnet 5 | $0.00143 | $0.00143 |
| Haiku 4.5 | $0.00072 | $0.00072 |
Grade A, and why
bitbank-mcp-server 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 9d 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.
What it actually says
Rules for bitbank-mcp-server
プロジェクト概要
bitbank 暗号資産取引所の公開APIからマーケットデータを取得する MCP (Model Context Protocol) サーバー。
技術スタック
- TypeScript (ES2022, Node16 module)
- MCP SDK (
@modelcontextprotocol/sdk) - dayjs(日時処理)
- Zod(バリデーション)
- BigNumber.js(精密な数値計算)
- Biome(フォーマッタ・リンター)
- Vitest(テスト)
コマンド
npm run build— TypeScript コンパイルnpm run format:check— Biome によるフォーマット・リントチェックnpm run format:fix— Biome による自動修正npm test— Vitest によるユニットテスト実行
アーキテクチャ
src/
index.ts — エントリーポイント(サーバー起動・ツール登録のみ)
client.ts — HTTP クライアント(fetchJson)
types.ts — 型定義
config/
pair.ts — ペアバリデーション(regex)
tools/
get-ticker.ts — 単一ペアのティッカー取得
get-tickers-jpy.ts — 全JPYペア一括取得(キャッシュ付き)
get-candles.ts — ローソク足データ取得
get-depth.ts — 板情報取得
get-transactions.ts — 約定履歴取得
utils/
datetime.ts — 日時変換(dayjs ベース)
format.ts — 表示フォーマット
実装ルール
- 日時処理には
Dateではなくdayjsを使用すること。 - ペアのバリデーションは Zod スキーマ(
pairRegex)+ensurePairで行う。normalizePairに形式変換ロジックは持たせない。 - 新しいツールは
src/tools/に独立したファイルとして追加し、index.tsで登録する。 index.tsにビジネスロジックを書かない。- import パスには
.js拡張子を付ける(Node16 module resolution)。
コーディング規約
- Biome 準拠(シングルクォート、スペースインデント、行幅 140)
- テストは
__tests__/ディレクトリに配置(*.test.ts) - 大きな変更を行う場合は README も更新すること。
メンテナンスルール
CLAUDE.md(本体)とAGENTS.mdは同じ内容を維持すること。AGENTS.mdはCLAUDE.mdへの symlink。- 編集時は
CLAUDE.mdを更新する。
参考
- bitbank Public API: https://github.com/bitbankinc/bitbank-api-docs
- MCP SDK: https://github.com/modelcontextprotocol/typescript-sdk
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.
- 9d ago First seen · 68 lines · 716 tokens per session scan A 53ebe69fd422
bitbank-mcp-server CLAUDE.md is an instructions file published in the GitHub repository bitbankinc/bitbank-mcp-server (0 stars, last pushed 5mo ago), licensed MIT. It adds 716 tokens to every session, about $0.0036 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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