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-s3Works with Claude Desktop, Cursor, VS Code Copilot, and any MCP client. Uses your existing AWS credentials (
~/.aws/credentialsor 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. |






