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S3 MCP Server

@samuraikun

リポジトリ

S3 MCP Server について

MCP server to integrate AWS S3 and LLM

#aws#typescript#mcp#aws-s3#mcp-servers#modelcontextprotocol

基本情報

カテゴリ

ファイルとストレージ

ライセンス

MIT

ランタイム

node

トランスポート

stdio

公開者

samuraikun

投稿者

Yuichi Kojima

設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "aws-s3-mcp": {
      "command": "npx",
      "args": [
        "aws-s3-mcp"
      ]
    }
  }
}

ツール

ツールは検出されませんでした

ツールは README から自動的に抽出されます。メンテナーは ## Tools という見出しの下に記載することで、このタブに反映できます。

概要

What is S3 MCP Server?

An Amazon S3 Model Context Protocol (MCP) server that provides tools for LLMs like Claude to interact with S3 buckets and objects. It supports listing buckets, listing objects, and retrieving object contents.

How to use S3 MCP Server?

Install via npm (npm install -g aws-s3-mcp), configure AWS credentials and environment variables such as AWS_REGION, S3_BUCKETS, and S3_MAX_BUCKETS, then run with HTTP transport (default) or STDIO transport. For Claude Desktop, run the server with the --stdio flag and add it to the Claude Desktop configuration.

Key features of S3 MCP Server

  • Supports STDIO, HTTP, and Streamable HTTP transports
  • Tools: list-buckets, list-objects, get-object
  • Deployment: local Node.js, Docker CLI, Docker Compose (with MinIO)
  • Built-in MCP Inspector for debugging and testing
  • Configurable allowed buckets and region

Use cases of S3 MCP Server

  • Allow Claude or other LLMs to browse S3 buckets and retrieve objects
  • Integrate S3 access directly into Claude Desktop workflows
  • Test S3 interactions locally using MinIO with Docker Compose
  • Debug MCP server behavior with the built-in inspector tool

FAQ from S3 MCP Server

What transports does the server support?

The server supports STDIO, HTTP, and Streamable HTTP transports. HTTP is the default transport; STDIO is required for Claude Desktop integration.

How do I configure AWS credentials?

Set environment variables AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, and AWS_REGION, or rely on the default AWS credentials file. A .env file can also be used.

What are the prerequisites?

Node.js 18 or higher, npm, and AWS credentials. Docker is optional for containerized setups.

How can I test the server locally without real AWS credentials?

Use Docker Compose with MinIO: run ./run-inspector.sh --docker-compose to start a MinIO instance with sample buckets and objects.

What is the maximum number of buckets listed by default?

The server returns up to 5 buckets by default, configurable via the S3_MAX_BUCKETS environment variable.

コメント

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