file-uploads

Cloud, DevOps & Systèmes

"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."

Documentation

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 |

Utiliser l'Agent file-uploads - Outil & Compétence IA | Skills Catalogue | Skills Catalogue