mcp-rag-server: Instructions file for Claude Code

CLAUDE.md

mcp-rag-server CLAUDE.md is an instructions file for Claude Code from karaage0703/mcp-rag-server. It costs 1,274 tokens per session, scanned A, original, MIT.

A project instruction document for an MCP RAG server. MCP is a standard way for AI applications to connect to tools, while RAG lets a system search stored documents before answering questions.

In plain words
What is it for?
Installing dependencies with uv, starting the Python server, indexing documents, updating indexes incrementally, clearing or counting indexed documents, testing, and checking code style.
Why use it?
It provides the setup and command details needed to run the server and its document-search database consistently.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is karaage0703/mcp-rag-server's own configuration. It tells Claude Code how to work on mcp-rag-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-rag-server configures →

Reuse

Borrowing it

Nothing to install: this file belongs to karaage0703/mcp-rag-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.

Copy the file
curl -O https://raw.githubusercontent.com/karaage0703/mcp-rag-server/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/karaage0703/mcp-rag-server

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 1,274 This file is loaded in full into every session.
When invoked 1,274 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01274 $0.01274
Opus 5 $0.00637 $0.00637
Sonnet 5 $0.00255 $0.00255
Haiku 4.5 $0.00127 $0.00127

Measured 9d ago against content hash e5d4ac6b167d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp-rag-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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

CLAUDE.md · 143 lines

How it starts

The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

プロジェクト概要

MCP RAG Serverは、Model Context Protocol (MCP)とRAG (Retrieval-Augmented Generation)機能を実装したPythonサーバーです。複数のドキュメント形式に対応したベクトル検索システムを提供します。

主要コマンド

開発環境セットアップ

# 依存関係のインストール (uvを使用)
uv sync

# PostgreSQLとpgvectorのセットアップが必要
# DockerでPostgreSQLを起動:
docker run -d \
  --name pgvector-db \
  -e POSTGRES_USER=your_user \
  -e POSTGRES_PASSWORD=your_password \
  -e POSTGRES_DB=your_database \
  -p 5432:5432 \
  pgvector/pgvector:pg16

# .envファイルの設定が必要

実行コマンド

# MCPサーバーの起動
uv run python -m src.main

# CLIでドキュメントをインデックス
uv run python -m src.cli index
uv run python -m src.cli index --incremental  # 差分インデックス

# インデックスのクリア
uv run python -m src.cli clear

# ドキュメント数の確認
uv run python -m src.cli count

テスト実行

# pytestでテスト実行
uv run pytest

Lint・フォーマット

# ruffでlintチェック
uv run ruff check --line-length=127

# ruffで自動フォーマット
uv run ruff format --line-length=127

# フォーマットチェック(差分表示)
uv run ruff format --check --diff --line-length=127

Pull Request(PR)

PR作成時
  • PRを要望されたら、gitコマンドで差分を確認したうえで、gh pr コマンドを使ってPRを作成してください
  • PRのdescriptionは .github/pull_request_template.md を読み取ってフォーマットを合わせてください
PRレビュー時

以下の手順でファイルごとにコメントを付けてください:

  1. チェックする観点は .github/pull_request_template.md を参照してください

  2. PRの差分を確認:

    gh pr diff <PR番号>
    
  3. ファイルごとに、変更後のファイル全体とPRの差分を確認した上でレビューコメントを追加:

    gh api repos/<owner>/<repo>/pulls/<PR番号>/comments \
      -F body="レビューコメント" \
      -F commit_id="$(gh pr view <PR番号> --json headRefOid --jq .headRefOid)" \
      -F path="対象ファイルのパス" \
      -F position=<diffの行番号>
    

    パラメータの説明:

    • position: diffの行番号(新規ファイルの場合は1から開始)
    • commit_id: PRの最新のコミットIDを自動取得

アーキテクチャ概要

コア構成

  • MCPサーバー層: src/mcp_server.pyがJSON-RPC通信を処理
  • RAGサービス層: src/rag_service.pyがドキュメント処理と検索を統括
  • データ層: PostgreSQL + pgvectorでベクトルデータベースを実装

主要モジュール

  • src/main.py: エントリーポイント
  • src/rag_tools.py: MCP用の検索ツール定義
  • src/document_processor.py: ドキュメント解析とチャンク化
  • src/embedding_generator.py: multilingual-e5-largeモデルでの埋め込み生成
  • src/vector_database.py: PostgreSQL/pgvectorインターフェース

Read the full file on GitHub · 143 lines

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. 9d ago First seen · 143 lines · 1,274 tokens per session scan A e5d4ac6b167d

Subscribe to this mod's changes

mcp-rag-server CLAUDE.md is an instructions file published in the GitHub repository karaage0703/mcp-rag-server (71 stars, last pushed 10mo ago), licensed MIT. It adds 1,274 tokens to every session, about $0.0064 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 2026-08-30.

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