Is S3 MCP Server safe to use?

S3 MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install S3 MCP Server?

S3 MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with S3 MCP Server?

S3 MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is S3 MCP Server actively maintained?

S3 MCP Server is recently maintained — last commit was 70 days ago. It has 1 GitHub stars.

S3 MCP Server

mcp-server-s3

AWS S3 MCP — list buckets, browse objects, upload/download, presigned URLs.

1 136/wk 0 tools GitHub npm

No known CVEs

No license

Maintained

Last commit 70d ago

Works with most clients

Transport: stdio, sse, http

0 tools

Grade F

Edit this pageView history

Cloud Data

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "s3": {
      "env": {
        "AWS_REGION": "us-east-1",
        "AWS_ACCESS_KEY_ID": "your-access-key",
        "AWS_SECRET_ACCESS_KEY": "your-secret-key"
      },
      "args": [
        "mcp-server-s3"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-ofershap-s3)](https://mcppedia.org/s/io-github-ofershap-s3)

Read me

What S3 MCP Server does

AWS S3 MCP — list buckets, browse objects, upload/download, presigned URLs.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'mcp-server-s3' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

51/100across 5 weighted dimensions

How we score →

0255075100

−49

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked mcp-server-s3 against OSV.dev.

Help improve this page

This server is missing a description. Tools and install config are also missing.If you've used it, help the community.

Add information

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is S3 MCP Server safe to use?: S3 MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install S3 MCP Server?: S3 MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with S3 MCP Server?: S3 MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is S3 MCP Server actively maintained?: S3 MCP Server is recently maintained — last commit was 70 days ago. It has 1 GitHub stars.

Similar servers

Others in cloud / data

View all →

Supabase MCP Server97

Manage Supabase projects — databases, auth, storage, and edge functions

2.7k 4

Observability Mcp95

MCP Server for GCP environment for interacting with various Observability APIs.

790 10

Firecrawl Mcp Server95

🔥 Official Firecrawl MCP Server - Adds powerful web scraping and search to Cursor, Claude and any other LLM clients.

6.3k 4

Apify Mcp Server94

The Apify MCP server enables your AI agents to extract data from social media, search engines, maps, e-commerce sites, or any other website using thousands of ready-made scrapers, crawlers, and automation tools available on the Apify Store.

1.2k 1

MCP Security Weekly

Get CVE alerts and security updates for S3 MCP Server and similar servers.

Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Cloud Data

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "s3": {
      "env": {
        "AWS_REGION": "us-east-1",
        "AWS_ACCESS_KEY_ID": "your-access-key",
        "AWS_SECRET_ACCESS_KEY": "your-secret-key"
      },
      "args": [
        "mcp-server-s3"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-ofershap-s3)](https://mcppedia.org/s/io-github-ofershap-s3)

Read me

What S3 MCP Server does

AWS S3 MCP — list buckets, browse objects, upload/download, presigned URLs.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'mcp-server-s3' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

mcp-server-s3

Manage AWS S3 buckets and objects from your AI assistant. Browse files, upload and download content, and generate presigned URLs.

npx mcp-server-s3

Works with Claude Desktop, Cursor, VS Code Copilot, and any MCP client. Uses your existing AWS credentials (~/.aws/credentials or environment variables).

_{Demo built with remotion-readme-kit}

Why

S3 is the most widely used cloud storage service, but managing it from the command line means remembering aws s3 ls, aws s3 cp, presigned URL syntax, and various flags. Google has an official MCP for GCS, Cloudflare has one for R2, but AWS S3 doesn't have a polished standalone MCP server on npm. This one lets you ask your assistant to list buckets, download a config file, upload content, or generate a temporary sharing link. It uses the standard AWS credential chain, so if your CLI already works, this works too.

Tools

Tool	What it does
`list_buckets`	List all S3 buckets in your AWS account.
`list_objects`	List objects in a bucket, with optional prefix filter.
`get_object`	Download and read an object's content as text.
`put_object`	Upload text content to an S3 object.
`delete_object`	Delete an object from a bucket.
`presigned_url`	Generate a temporary presigned URL for an object.
`bucket_info`	Check if a bucket exists and get basic info.

Quick Start

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "s3": {
      "command": "npx",
      "args": ["mcp-server-s3"],
      "env": {
        "AWS_REGION": "us-east-1",
        "AWS_ACCESS_KEY_ID": "your-access-key",
        "AWS_SECRET_ACCESS_KEY": "your-secret-key"
      }
    }
  }
}

Claude Desktop

Add to claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "s3": {
      "command": "npx",
      "args": ["mcp-server-s3"],
      "env": {
        "AWS_REGION": "us-east-1",
        "AWS_ACCESS_KEY_ID": "your-access-key",
        "AWS_SECRET_ACCESS_KEY": "your-secret-key"
      }
    }
  }
}

VS Code

Configure the MCP server to run npx mcp-server-s3 with AWS_REGION, AWS_ACCESS_KEY_ID, and AWS_SECRET_ACCESS_KEY in the environment.

Authentication

The server uses the standard AWS credential chain:

Environment variables: AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION
Shared credentials file: ~/.aws/credentials
IAM roles: when running on EC2, ECS, Lambda, or similar

Set AWS_REGION (defaults to us-east-1) and make sure your credentials have the necessary S3 permissions: s3:ListBuckets, s3:ListBucket, s3:GetObject, s3:PutObject, s3:DeleteObject, s3:HeadBucket.

Example prompts

"List all my S3 buckets"
"Show me the files in my-bucket/uploads/"
"Download the config.json from my-bucket"
"Upload this content to my-bucket/notes.txt"
"Generate a presigned URL for this file that expires in 1 hour"

Development


... [View full README on GitHub](https://github.com/ofershap/mcp-server-s3#readme)

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

51/100across 5 weighted dimensions

How we score →

0255075100

−49

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked mcp-server-s3 against OSV.dev.

Help improve this page

This server is missing a description. Tools and install config are also missing.If you've used it, help the community.

Add information

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is S3 MCP Server safe to use?: S3 MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install S3 MCP Server?: S3 MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with S3 MCP Server?: S3 MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is S3 MCP Server actively maintained?: S3 MCP Server is recently maintained — last commit was 70 days ago. It has 1 GitHub stars.