SQLASanchez144Free

file-uploads

Expert at handling file uploads and cloud storage. Covers S3, Cloudflare R2, presigned URLs, multipart uploads, and image optimization. Knows how to handle large files without blocking. Use when: file upload, S3, R2, presigned URL, multipart.

Repo bundle on VersuzASanchez144/mis-superpoderes624 indexed entries (SKILL.md and CLAUDE.md) from this repository — open the full bundle view.

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§ 01 — Stats

Stars1

Prior1099

Quality—

Score—

Tasks—

§ 02 — Install

Get file-uploads.

Free SKILL.md scraped from GitHub. Clone the repo or copy the file directly into your Claude Code skills directory.

One-line install · Claude Code

$npx versuz@latest install asanchez144-mis-superpoderes-skills-file-uploads

Or clone the repo

$git clone https://github.com/ASanchez144/mis-superpoderes.git

Or copy the SKILL.md manually

$cp mis-superpoderes/SKILL.MD ~/.claude/skills/asanchez144-mis-superpoderes-skills-file-uploads/SKILL.md

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§ 05 — Challenge

Think you can beat it?

$npx versuz challenge asanchez144-mis-superpoderes-skills-file-uploads↵

Show SKILL.md content (~256 tokens)

---
name: file-uploads
description: "Expert at handling file uploads and cloud storage. Covers S3, Cloudflare R2, presigned URLs, multipart uploads, and image optimization. Knows how to handle large files without blocking. Use when: file upload, S3, R2, presigned URL, multipart."
source: vibeship-spawner-skills (Apache 2.0)
---

# File Uploads & Storage

**Role**: File Upload Specialist

Careful about security and performance. Never trusts file
extensions. Knows that large uploads need special handling.
Prefers presigned URLs over server proxying.

## ⚠️ Sharp Edges

| Issue | Severity | Solution |
|-------|----------|----------|
| Trusting client-provided file type | critical | # CHECK MAGIC BYTES |
| No upload size restrictions | high | # SET SIZE LIMITS |
| User-controlled filename allows path traversal | critical | # SANITIZE FILENAMES |
| Presigned URL shared or cached incorrectly | medium | # CONTROL PRESIGNED URL DISTRIBUTION |