Agent Skills › zebbern/claude-code-guide › r2-upload

r2-upload

GitHub

支持将文件上传至Cloudflare R2、AWS S3等兼容存储，并生成带过期时间的安全预签名下载链接。支持多桶配置、自定义路径及过期时间设置。

skills/r2-upload/SKILL.md zebbern/claude-code-guide

Trigger Scenarios

上传文件到云存储获取临时分享链接提及R2或S3上传需要预签名URL

Install

npx skills add zebbern/claude-code-guide --skill r2-upload -g -y

More Options

Use without installing

npx skills use zebbern/claude-code-guide@r2-upload

指定 Agent (Claude Code)

npx skills add zebbern/claude-code-guide --skill r2-upload -a claude-code -g -y

安装 repo 全部 skill

npx skills add zebbern/claude-code-guide --all -g -y

预览 repo 内 skill

npx skills add zebbern/claude-code-guide --list

SKILL.md

Frontmatter

{
    "name": "r2-upload",
    "summary": "TypeScript-based MCP skill for uploading files to cloud storage (R2, S3, MinIO) with secure, temporary download links. Features multi-bucket support, interactive onboarding, and 5-minute default expiration.",
    "description": "Upload files to Cloudflare R2, AWS S3, or any S3-compatible storage (like MinIO) and generate secure, time-limited presigned download links with configurable expiration, typically set to 5 minutes. Use when the user needs to upload a file to cloud storage and get a shareable link, or mentions R2, S3, presigned URLs, temporary links, or file uploads with expiration."
}

Send Me My Files - R2 Upload with Short Lived Signed URLs

Upload files to Cloudflare R2 or any S3-compatible storage and generate presigned download links.

Features

Upload files to R2/S3 buckets
Generate presigned download URLs (configurable expiration)
Support for any S3-compatible storage (R2, AWS S3, MinIO, etc.)
Multiple bucket configurations
Automatic content-type detection

Configuration

Create ~/.r2-upload.yml (or set R2_UPLOAD_CONFIG env var):

# Default bucket (used when no bucket specified)
default: my-bucket

# Bucket configurations
buckets:
  my-bucket:
    endpoint: https://abc123.r2.cloudflarestorage.com
    access_key_id: your_access_key
    secret_access_key: your_secret_key
    bucket_name: my-bucket
    public_url: https://files.example.com  # Optional: custom domain
    region: auto  # For R2, use "auto"

  # Additional buckets
  personal:
    endpoint: https://xyz789.r2.cloudflarestorage.com
    access_key_id: ...
    secret_access_key: ...
    bucket_name: personal-files
    region: auto

Cloudflare R2 Setup

Go to Cloudflare Dashboard → R2
Create a bucket
Go to R2 API Tokens: https://dash.cloudflare.com/<ACCOUNT_ID>/r2/api-tokens
Create a new API token
- Important: Apply to specific bucket (select your bucket)
- Permissions: Object Read & Write
Copy the Access Key ID and Secret Access Key
Use endpoint format: https://<account_id>.r2.cloudflarestorage.com
Set region: auto

AWS S3 Setup

aws-bucket:
  endpoint: https://s3.us-east-1.amazonaws.com
  access_key_id: ...
  secret_access_key: ...
  bucket_name: my-aws-bucket
  region: us-east-1

Usage

Upload a file

r2-upload /path/to/file.pdf
# Returns: https://files.example.com/abc123/file.pdf?signature=...

Upload with custom path

r2-upload /path/to/file.pdf --key uploads/2026/file.pdf

Upload to specific bucket

r2-upload /path/to/file.pdf --bucket personal

Custom expiration (default: 5 minutes)

r2-upload /path/to/file.pdf --expires 24h
r2-upload /path/to/file.pdf --expires 1d
r2-upload /path/to/file.pdf --expires 300  # seconds

Public URL (no signature)

r2-upload /path/to/file.pdf --public

Tools

r2_upload - Upload file and get presigned URL
r2_list - List recent uploads
r2_delete - Delete a file

Environment Variables

R2_UPLOAD_CONFIG - Path to config file (default: ~/.r2-upload.yml)
R2_DEFAULT_BUCKET - Override default bucket
R2_DEFAULT_EXPIRES - Default expiration in seconds (default: 300 = 5 minutes)

Notes

Uploaded files are stored with their original filename unless --key is specified
Automatic UUID prefix added to prevent collisions (e.g., abc123/file.pdf)
Content-Type automatically detected from file extension
Presigned URLs expire after the configured duration