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

1. Go to Cloudflare Dashboard → R2
2. Create a bucket
3. Go to R2 API Tokens: https://dash.cloudflare.com/<ACCOUNT_ID>/r2/api-tokens
4. Create a new API token
   • Important: Apply to specific bucket (select your bucket)
   • Permissions: Object Read & Write
5. Copy the Access Key ID and Secret Access Key
6. Use endpoint format: https://<account_id>.r2.cloudflarestorage.com
7. 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

Setup

This skill is a stdio MCP server, not a shell command (there is no r2-upload binary). Build it once and register it with Claude Code:

cd "${CLAUDE_SKILL_DIR}" && npm install && npm run build
claude mcp add r2-upload -- node "${CLAUDE_SKILL_DIR}/dist/index.js"