file-uploads

v2026.09.24

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.

GitHub
Install command
npx skhub add davila7/file-uploads
Markdown
SKILL.md

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
Discovery
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Version
Latest version metadata

Version

v2026.09.24

Published

Sep 24, 2026

Category

Uncategorized

License

MIT

Source path

cli-tool/components/skills/security/file-uploads

Default branch

main

Latest commit

57f899e

Tree SHA

7e57ad9