---
name: send-me-my-files-r2-upload-with-short-lived-signed-06f8bd2c231f
description: Upload files to Cloudflare R2, AWS S3, or any S3-compatible storage and generate secure presigned download links with configurable expiration.
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.
---

# 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):

```yaml
# 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

```yaml
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

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

### Upload with custom path

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

### Upload to specific bucket

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

### Custom expiration (default: 5 minutes)

```bash
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)

```bash
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


---
Source attribution: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/julianengel/r2-upload/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 clawdbot

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/julianengel/r2-upload/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering
Roles: Backend Developer, Data Engineer, DevOps / SRE
Specialties: API, Backend
Tools: AWS, Cloudflare R2
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: f36251d309983a3f0dd186a78441e3868480cd6ff4b742c79ef2ebc5e3d0b17a