AgentSkillsCN

file-uploads

精通文件上传与云存储操作。涵盖 S3、Cloudflare R2、预签名 URL、分段上传以及图片优化。深知如何在不阻塞进程的前提下处理大文件。适用于：f…

SKILL.md
--- frontmatter
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: f..."
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

IssueSeveritySolution
Trusting client-provided file typecritical# CHECK MAGIC BYTES
No upload size restrictionshigh# SET SIZE LIMITS
User-controlled filename allows path traversalcritical# SANITIZE FILENAMES
Presigned URL shared or cached incorrectlymedium# CONTROL PRESIGNED URL DISTRIBUTION