s3-management

name	s3-management
description	Manage AWS S3 buckets and objects via MCP. Use when asked to browse, upload, download, or share S3 files.

AWS S3 Management via MCP

Use this skill when you need to manage S3 buckets, browse objects, upload/download files, or generate presigned URLs.

Available Tools

Tool	What it does
list_buckets	List all S3 buckets in the 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

Workflow

1. Start with list_buckets to discover available buckets
2. Use list_objects with a prefix to browse directories within a bucket
3. get_object reads text content — for binary files, use presigned_url instead
4. presigned_url generates a temporary shareable link (default 1 hour expiry)

Key Patterns

• list_objects uses prefix-based filtering (S3 doesn't have real directories): prefix: "uploads/2026/"
• get_object returns text content only — it won't work for images, binaries, or large files
• put_object takes string content — use it for config files, JSON, text, not binary uploads
• presigned_url is the right tool for sharing files or accessing binary content

Safety

• Always confirm before delete_object — S3 deletions are permanent (unless versioning is enabled)
• Always confirm before put_object to an existing key — it overwrites without warning
• Presigned URLs grant temporary access to anyone with the link — warn users about this